CRD4281-5

Transcription

CRD4281-5

CRD4281-5
Reference Design Data Sheet
FEATURES
n PCI Audio Accelerator add-in card designed to
meet AC ‘97 specification
n 2-layer low cost single sided adapter board
n CS4281 PCI Audio Controller and CS4297A Audio
Codec ‘97
CrystalClear™
AC '97 Low Cost PCI Audio
Adapter Reference Design
n Complete suite of Analog I/O connections:
— Line In, Line Out, Mic In, Modem audio connection,
CD In, Video In, and Aux In
n Optional hardware volume control connector
n Joystick/MIDI Interface
n Meets or exceeds Microsoft’s® PC 97, PC 98 and
PC 99, both required and advanced, audio performance requirements.
n Pin compatible with CS4614 and CS4280-CM
n Pin compatible with CS4297 and CS4299
DESCRIPTION
The CRD4281-5 low cost PCI add-in board reference
design showcases Cirrus Logic’s CS4281 Audio Controller and the CS4297A Audio Codec '97. The
CRD4281-5 card is 3.8 inches high by 4.7 inches long.
The CRD4281-5 reference design includes a customerready manufacturing kit. Included in the kit are a full set
of schematic design files (OrCAD® 7.2 format), PCB job
files (PADS® ASCII), PCB artwork files, and bill of materials. The design is production ready as is, or can be
easily modified to incorporate specific OEM value-add.
ORDERING INFO
CRD4281-5
CIRRUS LOGIC REFERENCE DESIGN DATA SHEET
DS308RD5A1
Copyright  Cirrus Logic, Inc. 1999
(All Rights Reserved)
MAR ‘99
CRD4281-5
CrystalClear™ AC '97 Low Cost PCI Audio Adapter
GENERAL INFORMATION
The CRD4281-5 is a reference design of a production-grade AC ‘97 PCI Audio card using the CrystalClear CS4281 PCI Audio Controller and the
CS4297A Audio Codec ‘97. These two integrated
circuits demonstrate Cirrus’ controller and CrystalClear audio quality in a single PCI add-in card
reference design. The CRD4281-5 audio measurements meet or exceed Microsoft’s PC 97, PC 98,
and PC 99, both required and advanced, audio performance requirements.
Today’s multimedia applications demand high
quality PC audio and numerous audio connections.
To meet this demand, Intel® defined the AC ‘97
(Audio Codec ‘97) specification that defines a twochip audio solution [1].
The advantage of a two chip audio solution lies in
the complete separation of the analog section from
the noisy digital environment of the personal computer. A 5-wire digital link is all that is required to
connect the audio codec to the PCI bus-based
AC ‘97 controller. This allows the audio section to
reach the required dynamic range of ~90 dB FS A
while making the layout and placement of the audio
section easier to implement.
In the Windows 95® environment, a MIDI stream
and a number of simultaneous audio streams from
Windows 95 applications can be sent to the
CS4281 over the PCI bus. The CS4281 performs
hardware-controlled audio stream mixing and processing, including sample rate conversion, then
sends the output stream over the AC ‘97 Link to the
CS4297A. The CS4297A provides multiple analog
audio inputs and outputs, analog mixing, Analogto-Digital Conversion (ADC) and Digital-to-Analog Conversion (DAC).
The CRD4281-5 is designed to provide the highest
possible functionality, along with industry leading
audio performance at a low manufacturing cost.
Care was taken with component placement and signal routing to minimize sources which can degrade
audio performance.
The CRD4281-5 reference design illustrates a low
cost two-layer add-in card layout. The card is sectioned into three main parts: the CS4281 PCI Audio
Controller section, the CS4297A Audio Codec ‘97
section, and the Analog I/O section.
CS4281 PCI AUDIO CONTROLLER
The CS4281 is a PCI 2.1 compliant device which
provides a complete high quality audio solution. It
includes an integrated FM synthesizer and Plugand-Play interface. In addition, the CS4281 offers
hardware volume control.
The circuitry supporting the CS4281 includes the
required bypass capacitors, an EEPROM, the
Microsoft ,Windows, and Windows 95 are registered trademarks, and WHQL is trademark of Microsoft.
CrystalClear is trademarks of Cirrus Logic, Inc.
Intel is a registered trademark of Intel Corporation.
OrCAD is a registered trademark of OrCAD, Inc.
PADS is a registered trademark of, PADS Software, Inc.
Preliminary product information describes products which are in production, but for which full characterization data is not yet available.
Advance product information describes products which are in development and subject to development changes. Cirrus Logic, Inc.
has made best efforts to ensure that the information contained in this document is accurate and reliable. However, the information is
subject to change without notice and is provided “AS IS” without warranty of any kind (express or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of
this publication may be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise). Furthermore, no part of this publication may be used as a basis for manufacture or sale of any
items without the prior written consent of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers
appearing in this document may be trademarks or service marks of their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trademarks and service marks can be found at http://www.cirrus.com.
2
DS308RD5A1
CRD4281-5
joystick interface and a buffer circuit for the external MIDI connection. The layout of this section
complies with the PCI specification version 2.1 [2]
for add-in cards. Please refer to the schematic and
layout sections of this document for more information. For more information on the CS4281, refer to
the CS4281 Data Sheet [3].
PCI Power Requirements
3.3 V power for the CS4281 is generated from the
+5 V on the PCI connector and regulated to +3.3 V
using a low dropout linear voltage regulator. This
is required since not all mother boards are guaranteed to have +3.3 V power available on the PCI
connectors.
Joystick/MIDI connection
The DB-15 connector allows a joystick or an external MIDI device to be connected to the CS4281.
The external connection can also take MIDI data
from an external source to the CS4281. A buffer
circuit allows the MIDIOUT pin of the CS4281 to
drive an external MIDI devices requiring 5 V signaling levels.
External EEPROM
The CS4281 EEPROM contains the required Subsystem Vendor ID and Subsystem ID values. The
CS4281 uses 9 data bytes in the EEPROM for configuration. The PCI Special Interest Group assigns
manufacturers a Subsystem Vendor ID. To meet
WHQL™ standards, the Subsystem ID must be a
non-zero value.
A separate utility, PCIRSRC.EXE, is supplied with
this kit to download configuration and OEM specific data to the EEPROM.
Please call Cirrus Logic PC Products Audio Division at (512) 445-7222 to have a Subsystem ID assigned to a particular project.
For information regarding the programming and
timing of the EEPROM, refer to the CS4281 Data
Sheet [3].
CS4297A AUDIO CODEC ‘97
The CS4297A is a mixed-signal serial Codec based
on the AC ‘97 specification. The CS4281 Controller is responsible for all communications between
the CS4297A and the rest of the system. The
CS4297A functions as an analog mixer, a stereo
ADC, a stereo DAC, and a control and digital audio
stream interface to the CS4281.
The CS4297A contains two distinct functional sections: digital and analog. The digital section includes the AC-link registers, power management
support, SYNC detection circuitry, and AC-link
serial port interface logic. The analog section includes the analog input multiplexer (mux), stereo
output mixer, mono output mixer, stereo ADCs,
stereo DACs, and analog volume controls. For
more information refer to the CS4297A Data
Sheet [4], which also discusses the capacitors required for the CS4297A and their placements.
Codec Power Requirements
A Motorola MC78L05CDT regulates the PCI
+12 V supply down to provide a clean +5 V analog
supply for the CS4297A. A voltage regulator is recommended for the analog supply. The
MC78L05CDT regulator provides adequate current for the CS4297A and associated analog circuitry.
AUDIO INPUTS AND OUTPUTS
The CS4297A has multiple analog inputs and outputs that may or may not be used depending on the
system’s application. Unused inputs should be tied
to Vrefout (pin 28) or capacitively coupled via
0.1 µF to the analog ground plane. The analog section contains the components for a headphone amplifier or power amplifier as a stuff option.
The Modem Audio, CD In, Video In and Aux In
headers are also part of the Analog I/O section. The
header and its associated components are optional
based on feature requirements.
DS308RD5A1
3
CRD4281-5
A full feature set of the CS4297A’s analog I/O is
represented on the reference design card through
internal headers and external connectors:
•
•
•
•
•
•
•
Line Out
Mic In
Line In
CD In
Modem audio connection
Aux In
Video In
Line Out
The output of the CS4297A is capable of driving
impedances greater than 10 kΩ with a maximum
output voltage of 1 Vrms. The ouput drive is adequate for self-powered speakers or external power
amplifiers. Two additional population options are
available for driving lower impedances. The first
option populated is a low-noise, low-distortion amplifier for driving headphones, typically impedances greater than 30 Ω. The second option is a power
amplifier for driving 8 Ω or 4 Ω speakers. The Line
Out connection is through the external 1/8" jack.
•
•
The Microphone In 1/8" jack provides an input to a
microphone pre-amplifier circuit that applies
18 dB of gain to the signal.
•
•
Capable of driving low impedance loads such
as 32 Ω headphones
Maximum output level: 2.0 Vrms
The CD In audio input headers are connected in
parallel, which means only one can be active at a
time. The first header is a 4 pin (0.1 inch center)
right-angled connector that is compatible with the
Sony and ATAPI standards.
•
•
•
•
Capable of driving low impedance loads such
as 4 Ω or 8 Ω speakers
Maximum output level: 2.9 Vrms into 4 Ω
or 8 Ω
•
The Line In 1/8" jack provides an input to the Line
In pins of the CS4297A.
Maximum input level: 2 Vrms
2 mm connector wired as:
- Pin 1 : Right Channel
- Pin 2 : Analog Ground
- Pin 3 : Left Channel
Aux In
•
Line In
Differential input using the CD common pin as
the ground
0.1 inch connector wired as:
The second option is a 4 pin (2 mm center) Mitsumi
shrouded connector.
Power Amp output option:
•
Maximum input level:
- Microphone Boost enabled: 12.5 mVrms
- Microphone Boost disabled: 125 mVrms
Supports 3-pin electret (power on ring) and 2pin dynamic microphones
CD In
Maximum output level: 1 Vrms
Headphone Amp output:
•
Mic In
•
Internal 4-pin (0.1 inch center) right-angled
connector
Wired as:
4
DS308RD5A1
CRD4281-5
•
Video In
•
•
Internal 4-pin (0.1 inch center) right-angled
connector
Wired as:
Modem Audio Connection
The modem audio connection can be made through
the internal 4-pin (0.1 inch center) right-angled
connector. This connector carries both a mono input and a mono output. The Mono Out signal from
the CRD4281-5 transfers audio to the modem, and
the Phone signal receives audio from the modem.
•
•
•
•
•
Internal 4 pin header (0.1 inch center)
Wired as:
- Pin 1 : Phone Input (from modem)
- Pin 4 : Mono output (to modem)
Phone maximum input level: 1 Vrms
Mono Out maximum output level: 0.7 Vrms
Minimum load impedance: 10 kΩ
SCHEMATIC DESCRIPTION
Figures 1 through 9 show the schematics for the
CRD4281-5 card. This section will describe particular pages of the schematic that need to be discussed.
Figure 1: Block Diagram
The block diagram is an interconnection overview
between schematic pages.
Figure 2: Analog Inputs
The inputs for AUX, VIDEO, CD, and LINE are
passed through a divider circuit that reduces the
voltage by 6 dB to allow connection of line level
sources up to 2 Vrms. The 220 pF capacitors are
provided on Line In, Mic In, CD In, Aux In, Video
In, and Internal Modem connection for EMC suppression. These may be removed if EMC testing
determines they are not required.
2.2 µF AC coupling capacitors are used on the Line
In, Mic In, CD In, Aux In, Video In, and Internal
Modem circuit to minimize the low frequency rolloff. The internal CD audio connection utilizes a
pseudo-differential interface with CD GND as the
common return path for both the left and right
channels. Therefore, the input impedance of this
block is half of that of the other inputs.
An additional CD In connector footprint, J2, is provided to support the legacy 2mm, Mitsumi style,
analog connector. Since J1 and J2 are on top of
each other, only one CD In audio connector can be
installed.
The modem connection is both a mono input and
output. The output is fed from the CS4297A’s
MONO_OUT. No standards exists for the internal
modem connector. R34, R35, and R36 are added in
case voltage dividers are required to adjust signal
levels. If an output voltage lower than 1 Vrms is desired, the resistors can be replaced with appropriate
values, as long as the total load on the output is kept
greater than 10 kΩ. The input is not divided and
can accommodate a line level source up to 1 Vrms.
Figure 3: Microphone Pre-amp and Bias
A Motorola MC33078D low noise dual op-amp
provides an +18 dB gain stage for the microphone
and buffers the phantom power supply for the mic.
The phantom power is derived from the +5 V analog supply and buffered by U1A to provide a max-
DS308RD5A1
5
CRD4281-5
imum of 4.2 V with no load and a minimum of
2.0 V under a 0.8 mA load on the ring, as required
by PC Design Guidelines, Chapter 17, Audio Components [6]. To accommodate PC 99 recommendation, the microphone circuit is implemented to have
-3 dB rolloffs at 60 Hz and 15 kHz.
Figure 4: Analog Output, Headphone Amp,
Power Amp
Three population options are provided for audio
out. The first population option is a headphone amplifier, the Motorola MC1458, which is capable of
driving stereo headphones with impedances greater
than 30 Ω or powered speakers. A jumper must be
installed across pins 2 & 3 of JP1 and JP2 for proper operation. The headphone amp can be bypassed
by the OEM or customer by installing the jumper
across pins 1 & 2 of JP1 and JP2.
The second population option is the addition of a
power amplifier, the Philips TDA1517P. A jumper
must be installed across pins 2 & 3 of JP1 and JP2
for proper operation. The power amp can be bypassed by the OEM or customer by installing a
jumper across pins 1 & 2 of JP1 and JP2.
Figure 6: CS4297A AC’97 Audio Codec
R17 and R18 are termination resistors in the serial
AC link between the CS4297A and the CS4281.
All filtering capacitors of audio signals are NPOtype to ensure minimal added distortion. Two footprints are also provided for the crystal, XTAL. A
CA-301 pin-in-hole footprint, Y1, for miniature
crystals, and a standard HC-49S package, Y2.
Figure 7: MIDI and Joystick Connection
A buffer driver circuit is used on the MIDIOUT pin
to provide the necessary 5 V TTL compatible output on the DB-15 connector. This circuit can be removed, and R37 populated to bypass the buffer
circuit if a 3.3 V compatible output is sufficient.
L4, C72, C77, C78, C79 are provided for EMC
suppression and can be removed if EMC testing
shows they are not required. In this case replace L4
with a 0 Ω resistor. C73 - C76 and C80 - C83 are
functional to the joystick circuitry as well as provide for EMC suppression and therefore must not
be removed.
Figure 8: PCI Bus Connection
The third and least expensive option is to not populate either the headphone amp or power amp. This
option is the least flexible since only powered
speakers can be driven. A jumper must be installed
across pins 1 & 2 of JP1 and JP2 for proper operation.
The PCI 2.1 specification requires that each unused
+3.3 V power pin should be connected with an average of 0.01 µF capacitor [2]. Seven 0.1 µF capacitors in parallel provide the required capacitance
for the +3.3 V power pins. 0 Ω resistors R43 and
R44 can be used to omit the +3.3V regulator if this
voltage is known to be provided on the PCI bus.
Figure 5: CS4281 PCI Controller
Figure 9: Power Supplies
The 0.1 µF capacitors connected to the power pins
of the CS4281 should be as close as possible to the
chip. L3, C56, and C57 are used to filter the power
supply for the internal DLL circuit. R19 and R20
are termination resistors in the serial AC link between the CS4297A and the CS4281. All unused
input and bi-directional pins are tied to their respective inactive levels through a 10 kΩ resistor.
The CS4297A requires both a digital +3.3 V and an
analog +5 V supply. The digital power is supplied
from the PCI bus. A separate regulator is recommended for the analog voltage supply to provide
good audio signal quality. A Motorola MC78L05
regulates the +12 V supply from the PCI bus down
to a clean +5 V analog supply. For the best audio
performance, the analog voltage regulator, should
be located near the CS4297A. Two packaging options are supported, where U2 is an SO8 surface
6
DS308RD5A1
CRD4281-5
mount package and U3 is a TO-92 pin-in-hole
package. The -12 V power pin is decoupled
through C29/C30, and supplies power to the headphone circuit.
The low drop-out voltage regulator, Micrel
MIC2920A, is used to provide the required +3.3 V
to the CS4281 in the absence of +3.3 V on the PCI
bus. Two packaging options are supported. U8 is a
SOT-223 surface mount package, and U9 is a TO220 pin-in-hole package. 0 Ω resistors are provided
as a stuffing option if +3.3V is known to be available on the PCI bus.
CS4614 / CS4280 Compatibility
This board is backwards compatible with CS4614
and CS4280. The following pull-up resistors are
not integrated on those chips and need to be populated externally on the board.
•
•
•
R76 and R77 for hardware volume control
R23 for MIDI Input
R24-R27 for Joystick buttons
Component Selection
Great attention was given to the particular components used on the CRD4281-5 board with cost, performance, and package selection as the most
important factors. Listed are some of the guidelines
used in the selection of components:
•
•
•
•
•
•
No components smaller than 0805 package.
Only single package components; no resistor
packs.
8-pin devices are in surface mount packages.
The TDA1517P power amp is pin in hole package
Dual footprint for XTAL. Standard H49S, and
small circular CA-301 pin in hole package.
Dual footprint for +5 V and +3.3 V regulators.
Surface mount and pin in hole packages are
supported.
EMC Components
A number of capacitors and inductors are included
to help the board meet EMC compliance tests, such
as FCC Part 15. Modifying this selection of components without EMC testing could result in EMC
compliance failure.
GROUNDING AND LAYOUT
The component layout and signal routing of the
CRD4281-5 provides a good example of how to
layout a PCI add-in card. PCI-bus based add-in
cards have explicit requirements on trace lengths
that are not imposed on motherboard designs.
These trace length limits for add-in cards are as follows:
•
Maximum trace length for 32-bit signals on 32bit and 64-bit cards is 1.5 inches.
• Maximum trace lengths for signals on the 64bit extension are 2 inches.
• Trace length for the PCI CLK signal is 2.5
inches ± 0.1 inch.
• The PCI CLK signal must drive only one load.
Please refer to the PCI 2.1 Specification [2], Section 4.3.6, for information on routing PCI bus signals on a motherboard.
Partitioned Voltage and Ground Planes
The CRD4281-5 is partitioned into a digital and analog section to keep digital and analog ground currents from crossing. Ground currents from digital
signals are inherently noisy with respect to analog
signals and should be isolated from the audio section. The first rule in laying out mixed signal PCBs
is to keep all digital signals over the digital ground
plane and all analog signals over the analog ground
plane. When digital and analog signals cross
planes, they introduce noise into the audio section
reducing performance.
The pinout of the CS4297A allows the ground split
to completely separate digital signals on one side
and analog signals on the other. This split is located
DS308RD5A1
7
CRD4281-5
very close to the CS4297A so analog and digital
ground return currents originating from the
CS4297A may flow through their respective
ground planes. A bridge is made across the split to
maintain the proper reference potential for each
ground plane.
The area around the crystal oscillator and the two
XTAL signals is filled with copper on the top and
bottom sides and attached to digital ground. This
ground plane serves to keep noise from coupling
onto these pins. All data converters are highly susceptible to noise on the crystal pins.
A separate chassis ground provides a reference
plane for all of the EMC components. The chassis
ground plane is connected to the analog ground
plane at the external jacks.
CS4297A Layout Notes
Refer to the CS4297A Data Sheet [4] for partitioning and bypass capacitors placement. Pay close attention to bypass capacitors on REFFLT, AFLT1,
AFLT2 and the power supply capacitors.
The pinout of the CS4297A is designed to keep
digital and analog signals from crossing when laying out the board.
REFERENCES
1) Intel, Audio Codec ‘97 Component Specification, Revision 2.1, May 22, 1998.
http://developer.intel.com/pc-supp
/platform/ac97/
2) PCI Special Interest Group, PCI Local Bus
Specification, Revision 2.1, June 1, 1995.
http://www.pcisig.com/
3) Cirrus Logic, CS4281 PCI Audio Interface
Data Sheet
http://www.cirrus.com/products
/overviews/cs4281.html
4) Cirrus Logic, CS4297A SoundFusion Audio
Codec ‘97 Data Sheet
/overviews/CS4297A.html
5) Steve Harris, Clif Sanchez, Personal Computer
Audio Quality Measurements, Ver 0.5
/papers/meas/meas.html
6) Microsoft, PC Design Guidelines,
http://www.microsoft.com/hwdev/desguid/
7) M. Montrose. Printed Circuit Board Design
Techniques for EMC Compliance, IEEE Press,
New York: 1996.
ADDENDUM
•
•
•
•
Schematic drawings
Layout drawings
Bracket drawings
Bill of materails
8
DS308RD5A1
CRD4281-5
CS4297
MIC IN
MIC1
MIC1
Power
AUDIO IN
AUX_R
AUX_L
VIDEO_R
VIDEO_L
PHONE_IN
MONO_OUT
CD_INR
CD_INL
CD_COM
AUDIO OUT
AUX_R
AUX_L
LINE_OUTL
LINE_OUTR
VIDEO_R
VIDEO_L
EAPD
PHONE_IN
MONO_OUT
LINE_OUTL
LINE_OUTR
EAPD
ABITCLK
ASDIN
ASDOUT
CD_INR
CD_INL
CD_COM
LINE_INR
LINE_INL
ASYNC
ARST#
LINE_INR
LINE_INL
JBB2
JBB1
JBCY
JBCX
JAB2
JAB1
JACY
JACX
JAB2
JAB1
JACY
JACX
C/BE[3..0]#
AD[31..0]
JBB2
JBB1
JBCY
JBCX
DEVSEL#
PERR#
IDSEL
REQ#
CLK
GNT#
RST#
C/BE[3..0]#
AD[31..0]
MIDIOUT
MIDIIN
PAR
STOP#
TRDY#
FRAME#
INTA#
IRDY#
MIDIOUT
MIDIIN
ASYNC
ARST#
MIDI_JOY
ABITCLK
ASDIN
ASDOUT
CS4281
DEVSEL#
PERR#
IDSEL
REQ#
CLK
GNT#
RST#
C/BE[3..0]#
AD[31..0]
PAR
STOP#
TRDY#
FRAME#
INTA#
IRDY#
PCI_BUS
Figure 1. Block Diagram
DS308RD5A1
9
10
R
G
4
3
2
1
J6
4X1HDR-SN/PB
4
3
2
1
AGND
C22
220pF
NPO
R60
R59
6.8K
6.8K
6.8K
6.8K
C12 2.2uF
C16 2.2uF
+
C18 2.2uF
+
Figure 2. Audio In
VIDEO_L
VIDEO_R
AUX_L
4
3
2
1
1
2
3
4
B4B-PH-K
J2
D O N OT
P O P U L AT E
J2
R
GND
L
GND
J1
4
3
2
1
4X1HDR-SN/PB
R
G
G
L
CDROM IN
47K
C5
AGND
47K
R36
AGND
C6
AGND
27K
AGND
220pF 220pF 220pF
NPO
NPO
NPO
C4
C102
220pF
NPO
AGND
C101
220pF
NPO
AGND
R35
R34
2.2uF
6.8K
6.8K
AGND
R62
C1 2.2uF
C3
2.2uF
C2 2.2uF
6.8K
6.8K
3.4K
R61
R57
R55 3.4K
R54
R53
C100
C99 2.2uF
+
AGND
C21
220pF
NPO
AGND
R58
R56
6.8K
6.8K
+
R
G
G
L
C14
220pF
NPO
R52
R51
+
AGND
C13
220pF
NPO
AGND
6.8K
R50
AUX_R
J11
4X1HDR-SN/PB
FROM MODEM
R
G
G
L
TO MODEM
INTERNAL MODEM
+
VIDEO IN
AGND
6.8K
LINE_INL
C11 2.2uF
C8 2.2uF
R48
6.8K
6.8K
LINE_INR
+
4X1HDR-SN/PB
L
J4 G
CGND
C10
220pF
NPO
R49
R47
C7 2.2uF
+
AUX IN
AGND
C9
220pF
NPO
AGND
6.8K
6.8K
+
PHONO-1/8
Connect CGND to
AGND at the
jack
J3
4
3
2
1
5
R46
R45
+
MITSUMI
Line In
CD_INL
CD_COM
CD_INR
PHONE_IN
MONO_OUT
CRD4281-5
+
DS308RD5A1
DS308RD5A1
3) Populate:
0.1uF for C110
J5
PHONO-1/8
Connect CGND
to the jack
4
3
2
1
5
AGND
CGND
C112
NPO
220pF
R73 2.7K
AGND
C114
0.1uF
X7R
+5VA
C111
NPO
220pF
place close to
pins 8 and 4
100 ohm for C109 (fits on the same pad)
2.5K for R68
2.2K for R73
2) Populate R79, R80 and C119
1) Do not populate U10, R68, R69, R70, R71, R72, R74, R75, C113, C114 and C115.
For Microphone Circuit without Op Amp
R71
100K
Figure 3. Mic In
-
+
C119
0.1uF
X7R
2
MC33078D
3
U10A
AGND
AGND
+5VA
0
Do not populate R80
& C119 for Pre Amp
Mic Circuit
X7R
C109 0.068 uF
AGND
68K
R69
1
R79
Do not populate R79
for Pre Amp Mic
Circuit
0
R80
AGND
+
10UF
C108
10UF
C113
R74 6.8K
R72 47K
AGND
+
AGND
+5VA
R70
47K
R68
47K
R75
7
MC33078D
U10B
47K
220pF
AGND
NPO
C115
6 -
5 +
+5VA
C110
X7R
1uF
MIC1
CRD4281-5
11
CRD4281-5
R4
0
470UF
C23
1
2
C23 & C24 ARE REQUIRED FOR POWER AMP ONLY.
STUFF R4 & R7 WHEN USING HEADPHONE AMP.
1
2
JP1
3
3x1 HDR
470UF
C24
1
2
R7
0
1
2
JP2
3
3x1 HDR
SPEAKER OUT
J8
4
3
2
1
5
R5
220K
C26
220pF
NPO
R6
220K
C27
220pF
NPO
PHONO-1/8
AGND
HEADPHONE
AMP OPTION
22pF
C25 NPO
CGND
R8
56K
Connect CGND
to AGND at
the jack
AGND
-12VA
R9
27K
2
1
3
+12VA
AGND
U1A
MC1458
22pF
C28 NPO
R10
56K
-12VA
R11
27K
6
7
5
+12VA
AGND
U1B
MC1458
C34
LINE_OUTR
1
R12
47K
POWER AMP OPTION
+12VA
ATTN. BY -10 .75 dB
V = .29 Vr ms
R13
5.6K
C35 1.0uF
2
1
2
3
4
5
6
7
8
9
10UF
C36
LINE_OUTL
1
VIN(max) = 1 Vrms 10UF
R14
47K
C37 1.0uF
2
R15
Q3
MMBT3904LT1
R16
AGND
U4
-INV1
GND11
GND1GND10
SVRR GND9
OUT1 GND8
GND2 GND7
OUT2 GND6
VP
GND5
M/SS GND4
-INV2GND3
18
17
16
15
14
13
12
11
10
MAX POWER INTO 4 ohms
P=Vsq/4; V=2.9 Vr ms=8.2 Vp-p
P=2.1W
TDA1517P
+20 dB GAIN (FIXED) AGND
+
27K
27K
AGND
EAPD
R78 2.2K
1
C39
10UF
do not populate for
C S 4 297.
AGND
This pin is availa ble for
CS4297A and CS4299
Figure 4. Audio Out
12
DS308RD5A1
CRD4281-5
U6
ABITCLK
ASDOUT
ASDIN
ASYNC
ARST#
+3.3VD
DGND
+3.3VD
R21
5.6K
U7
1
2
3
4
nc1
nc2
nc3
Vss
Vcc
nc4
SCL
SDA
R19
47
R20
47
24LC00
DGND
INTA#
RST#
CLK
GNT#
REQ#
FRAME#
IRDY#
TRDY#
DEVSEL#
STOP#
PERR#
PAR
IDSEL
DGND
DGND
CS4281 PCIVDD PINS
+3.3VD
+3.3VD
PIN 8
C58
0.1uF
X7R
PIN 7
+3.3VD
PIN 21
C59
0.1uF
X7R
PIN 22
+3.3VD
PIN 31
C60
0.1uF
X7R
PIN 30
PIN 39
C61
0.1uF
X7R
PIN 40
DGND
DGND
DGND
DGND
+3.3VD
+3.3VD
+3.3VD
+3.3VD
PIN 50
C66
0.1uF
X7R
PIN 49
DGND
PIN 86
C67
0.1uF
X7R
PIN 87
DGND
PIN 94
C69
0.1uF
X7R
PIN 93
DGND
81
82
83
84
85
15
16
17
20
23
24
26
99
67
93
25
19
18
AD00
AD01
AD02
AD03
AD04
AD05
JAB1
AD06
JAB2
AD07
JBB1
AD08
JBB2
AD09
JACX
AD10
JBCX
AD11
JBCY
AD12
JACY
AD13
MIDIIN
AD14
MIDIOUT
AD15
ASDIN2/GPIO1
AD16
GPIO3
AD17
VOLUP
AD18
VOLDN
AD19
EECLK/GPOUT/PCREQ#AD20
EEDAT/GPIO2/PCGNT#AD21
TEST
AD22
TESTSEL
AD23
AD24
INTA
AD25
RST
AD26
PCICLK
AD27
PCI_GNT
AD28
PCI_REQ
AD29
FRAME
AD30
IRDY
AD31
TRDY
DEVSEL
CBEO
STOP
CBE1
PERR
CBE2
PAR
CBE3
IDSEL
PME#
CLKRUN#
CRYVDD
IRQA
CRYGND
IRQB
IRQC
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
AD25
AD26
AD27
AD28
AD29
AD30
AD31
38
27
14
98
C/BE0
C/BE1
C/BE2
C/BE3
68
3.3VAUX
12
61
86
100
8
21
31
39
50
73
CVDD1
CVDD2
PCIVDD0
PCIVDD2
PCIVDD3
PCIVDD4
PCIVDD5
PCIVDD6
PCIVDD7
VDD5REF
CGND1
CGND2
CGND3
13
62
65
PCIGND0
PCIGND2
PCIGND3
PCIGND4
PCIGND5
PCIGND6
PCIGND7
87
1
7
22
30
40
49
56
57
58
59
52
54
55
53
60
63
66
94
70
71
79
80
51
64
VOLUP
VOLDN
8
7
6
5
AD[31..0]
48
47
46
45
44
43
42
41
37
36
35
34
33
32
29
28
11
10
9
6
5
4
3
2
97
96
95
92
91
90
89
88
74
75
76
77
78
JAB1
JAB2
JBB1
JBB2
JACX
JBCX
R63
JBCY
10K
JACY
MIDIIN
MIDIOUT
CS4281
ABITCLK
ASDOUT
ASDIN
ASYNC
ARST
C/BE[3..0]#
PIN 100
C116
0.1uF
X7R
PIN 1
+5V_PCI
DGND
C/BE[3..0]#
+3.3VD
L3
120@100MHz
69
72
C56
1000pF
NPO
+3.3VD
DGND
AD[31..0]
C57
0.1uF
X7R
DGND
DGND
CS4281 CVDD PINS
+3.3VD
+3.3VD
PIN 12
C62
0.1uF
X7R
PIN 13
DGND
+3.3VD
+3.3VD
PIN 19
C64
0.1uF
X7R
PIN 18
DGND
CS4281 3.3VAUX PIN
+3.3VD
PIN 68
C70
0.1uF
X7R
PIN 67
+3.3VD
PIN 61
C117
0.1uF
X7R
PIN 62
DGND
C65
0.1uF
X7R
PIN 64
C118
0.1uF
X7R
PIN 65
R76
Do not populate R76 &
R77 R77 for Cs4281
4.7K
4.7K
DGND
J12
DGND
Hardware Volume
Control
U
G
G
D
4
3
2
1
R64
100 VOLUP
R65
100 VOLDN
4X1HDR-SN/PB
C104
100pF
C105
100pF
COG
COG
DGND
DGND
DGND
Figure 5. CS4281 PCI Audio Controller
DS308RD5A1
13
14
C49
0.1uF
X7R
TIE UNUSED ANALOG
INPUTS TO VREF.
C51
1.0uF
1.0uF
AGND
C52
0.1uF
X7R
+
27
28
29
30
12
13
14
15
16
17
18
19
20
21
22
23
24
8
10
11
2
3
1
9
25
38
C42
0.1uF
X7R
AGND
+5VA
REFFLT
Vrefout
AFLT1
AFLT2
PC_BEEP
PHONE
AUX_L
AUX_R
VIDEO_L
VIDEO_R
CD_L
CD_GND
CD_R
MIC1
MIC2
LINE_IN_L
LINE_IN_R
SDATA_IN
SYNC
RESET#
XTL_IN
XTL_OUT
DVdd1
DVdd2
AVdd1
AVdd2
U5
C43
0.1uF
X7R
C44
0.1uF
X7R
BCFG
FLT3D
FLTI
FLTO
nc5
nc6
nc7
ID0#
ID1#
EAPD
S/PDIF_OUT
ALT_LINE_OUT_L
ALT_LINE_OUT_R
MONO_OUT
LINE_OUT_L
LINE_OUT_R
BIT_CLK
SDATA_OUT
DVss1
DVss2
AVss1
AVss2
CS4297A
31
32
33
34
40
43
44
45
46
47
48
39
41
37
35
36
6
5
4
7
26
42
Figure 6. CS4297A AC ’97 Audio Codec
DGND
C41
0.1uF
X7R
+5V_PCI
10UF
C40
47
C54
1000pF
NPO
R17
+5V_PCI
+5VA
C53
1000pF
NPO
LINE_INL
LINE_INR
PHONE_IN
AUX_L
AUX_R
VIDEO_L
VIDEO_R
CD_INL
CD_COM
CD_INR
MIC1
C46
22pF
NPO ASDIN
ASYNC
ARST#
DGND
24.576 MHz
C50
DGND
C45
22pF
NPO
24.576 MHz
Y2
Y1
layout Y1 on top of
Y2 -- populate only
one XTAL
DUAL FOOTPRINT LAYOUT
FOR XTAL.
47
R66
R18
DGND
AGND
AGND
C107
1000pF
NPO
0
C48
680pF
NPO
C103
680pF
NPO
EAPD
AGND
Do not populate C107,
C106 for CS4297.
C106
X7R
0.01uF
Do not populate R66.
C47
680pF
NPO
AGND
MONO_OUT
LINE_OUTL
LINE_OUTR
ABITCLK
ASDOUT
CRD4281-5
DS308RD5A1
39K
R40
1
100
DGND
20K
R42
10K
R41
R30
R32
R33
R31
C81
12000pF
X7R
2.2K
2.2K
2.2K
2.2K
DGND
MMBT3904LT1
Q2
MIDI_BUF
5.1K
R39
+5V_PCI
DGND
1
C83
12000pF
X7R
MMBT2907ALT1
Q1
+3.3VD
2
3
optional MIDI out buffer -- populate as necessary
Place Near
Inky
39K
R38
R37
C82
12000pF
X7R
populate instead of MIDI
out buffer as necessary
C80
12000pF
X7R
3
2
F
H3
F
H4
H5
C73
1000pF
NPO
4.7K
R24
C76
1000pF
NPO
4.7K
R27
Figure 7. Joystick/MIDI Circuitry
FIDUCIAL FIDUCIAL FIDUCIAL TOOLHOLE
F
H2
C75
1000pF
NPO
4.7K
4.7K
C74
1000pF
NPO
R26
R25
C78
100pF
COG
CGND
31@100MHz
COG
Po pulate R23 for
CS4280
L4
C77
100pF
47K
R23
+5V_PCI
C79
0.1uF
X7R
CGND
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
0.1uF
X7R
C72
J10
DB15
16
DS308RD5A1
17
+5V_PCI
CRD4281-5
15
CRD4281-5
+12VD +5V_PCI
+3.3V_PCI
+3.3V_PCI
P1
+5V_PCI
PCI Bus +3.3V supply.
Place near PCI edge
+3.3V_PCI
connector
-12VD
P2
PCI BUS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
INTA#
PCI Bus +5V_PCI
Side B near pin
1
+ C84
10uF
ELEC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
C85
0.1uF
X7R
C/BE[3..0]#
C/BE[3..0]#
RST#
DGND
CLK
REQ#
GNT#
AD30
AD31
AD29
AD28
AD26
AD27
AD25
AD24
C/BE3
IDSEL
AD23
AD22
AD20
AD21
AD19
AD18
AD16
AD17
C/BE2
FRAME#
IRDY#
TRDY #
DEVSEL#
STO P#
PERR#
PAR
AD15
C/BE1
AD14
AD13
AD11
AD12
AD10
AD9
C/BE0
AD8
AD7
AD6
AD4
AD5
AD3
AD2
AD0
AD1
AD[31..0]
+
Side A
1
AD[31..0]
TRST#
+12V
TMS
TDI
+5V(1)
INTA#
INTC#
+5V(2)
RSVD(1)
+5V(3)
RSVD(2)
GND(1)
GND(2)
RSVD(3)
RST#
+5V(4)
GNT#
GND(3)
PME#
AD[30]
+3.3V(1)
AD[28]
AD[26]
GND(4)
AD[24]
IDSEL
+3.3V(2)
AD[22]
AD[20]
GND(5)
AD[18]
AD[16]
+3.3V(3)
FRAME#
GND(6)
TRDY#
GND(7)
STOP#
+3.3V(4)
SDONE
SBO#
GND(8)
PAR
AD[15]
+3.3V(5)
AD[13]
AD[11]
GND(9)
AD[9]
KEY1
KEY2
C/BE[0]#
+3.3V(6)
AD[6]
AD[4]
GND(10)
AD[2]
AD[0]
+5V(5)
REQ64#
+5V(6)
+5V(7)
C93
0.1uF
X7R
PCI BUS 5V A
-12V
TCK
GND11
TDO
+5V(8)
+5V(9)
INTB#
INTD#
PRSNT1#
RSVD(4)
PRSNT2#
GND(12)
GND(13)
RSVD(5)
GND(14)
CLK
GND(15)
REQ#
+5V(10)
AD[31]
AD[29]
GND(16)
AD[27]
AD[25]
+3.3V(7)
C/BE[3]#
AD[23]
GND(17)
AD[21]
AD[19]
+3.3V(8)
AD[17]
C/BE[2]#
GND(18)
IRDY#
+3.3V(9)
DEVSEL#
GND(19)
LOCK#
PERR#
+3.3V(10)
SERR#
+3.3V(11)
C/BE[1]#
AD[14]
GND(20)
AD[12]
AD[10]
GND(21)
KEY3
KEY4
AD[8]
AD[7]
+3.3V(12)
AD[5]
AD[3]
GND(22)
AD[1]
+5V(11)
ACK64#
+5V(12)
+5V(13)
C86
0.1uF
X7R
C87
0.1uF
X7R
C98
0.1uF
X7R
DGND
PRSNT2#, PRSNT1# = 00
Power Requirement =
7.5W max
+3.3V_PCI
+3.3VD
R43
0
R44
0
POPULATE 0 OHM
RESISTORS ONLY IF 3.3V
IS AVAILABLE ON PCI
BUS AND 3.3V REGULATOR
IS NOT REQUIRED
+3.3V_PCI
C94
0.1uF
X7R
C95
0.1uF
X7R
C96
0.1uF
X7R
C97
0.1uF
X7R
DGND
Unused PCI Bus +3.3V supply.
Place near PCI edge
connector
Side B
C92
10UF
PCI BUS 5V B
DGND
DGND
Connect AGND to DGND with a 50 mil trace near the CS4297
Connect CGND to DGND with a 50 mil trace near the finger
edge of the board.
Figure 8. PCI Bus
16
DS308RD5A1
C88
10UF
IN
DGND
DGND
OUT
U8
OUT
U9
3
3
+
+12VD
100uF
L2
-12VD
C30
0.1uF
X7R
31@100MHz
L1
+
+12VA
31@100MHz
Figure 9. Power
AGND
C29
-12VA
C89
10UF
Connect AGND to DGND with a 50 mil trace near the 4297
Connect CGND to DGND with a 50 mil trace near the finger
edge of the board.
C91
0.1uF
X7R
+3.3VD
MIC2920A,400ma,SOT223
C90
0.1uF
X7R
1
IN
U8 OR U9 IS NOT REQUIRED IF
3.3V IS AVAILABLE ON THE
PCI BUS. IF REMOVED, STUFF
0 OHM RESISTORS AS SHOWN ON
PAGE 8. CONTINUE TO
POPULATE C88 - C91.
+
S U R FA C E M O U N T
P O P U L AT I O N
OPTION
1
GND
2
PIN IN HOLE
P O P U L AT I O N
OPTION
+5V_PCI
100uF
C31
AGND
5
NC1
VIN
C33
0.1uF
X7R
2
1
MC78L05AC
OUT 1
VOUT
GND4 GND1
3
4
MC78L05ACD
GND3 GND2
NC2
U3
3 IN
8
7
6
U2
GND
AGND
2
4
GND NC
2
1
2
1
2
+
AGND
+5VA
1
2
DS308RD5A1
+
MIC2920A,400ma,TO220
C32
10UF
PIN IN HOLE
P O P U L AT I O N
OPTION
S U R FA C E M O U N T
P O P U L AT I O N
OPTION
CRD4281-5
17
CRD4281-5
Figure 10. Assembly Drawing
18
DS308RD5A1
CRD4281-5
Figure 11. Top Layer
19
DS308RD5A1
CRD4281-5
Figure 12. Bottom Layer
20
DS308RD5A1
CRD4281-5
Figure 13. Drill Drawing and Manufacturing Instructions
DS308RD5A1
21
CRD4281-5
Figure 14. Bracket Drawing
22
DS308RD5A1
17
1
J10
18
19
20
21
1
3
1
1
J12
L1,L2,L4
L3
Q1
Part Description
CAP, SMT A, ELEC, 2.2uF, 20%, 35V
Type
ELEC
Package
CE_2.2uF_35V
Manf.
PANASONIC
Part Number
ECE-V1VS2R2SR
CAP, 0805, C0G, 220pF, 5%, 50V
NPO
0805_221_C0G_50V_5%
KEMET
C0805C221J5GAC
CAP, 0805, C0G, 22pF, 5%, 50V
ALUM ELECT, 100uF,20%,16V,POL
CAP, 0805, X7R, .1uF, 10%, 50V
NPO
PIH
X7R
0805_220_C0G_50V_5% KEMET
ECEA1CGE101
PANASONIC
0805_104_X7R_50V_10% KEMET
C0805C220J5GAC
ECA-1CM101
C0805C104K5RAC
ALUM ELECT,10uF,20%,16V,POL
ALUM
CAP4X11U106L016
ECA-1CM100
CAP,1.0UF,SO,1206,+80/-20%,25V,Y5V
CAP, 0805, C0G, 680pF, 5%, 50V
CAP, 0805, C0G, 1000pF, 10%, 50V
Y5V
NPO
NPO
GRM42-6Y5V105Z25BL
MURATA
0805_681_C0G_50V_5% KEMET
0805_102_C0G_50V_10% KEMET
GRM42-6Y5V105Z25BL
C0805C681J5GAC
C0805C102K5GAC
CAP, 0805, COG, 100pF, 5%, 50V
CAP, 0805, X7R, 12000pF, 10%, 50V
CAP, 0805, X7R, 68000pF, 10%, 50V
CAP, 1206, X7R, 1uF, 10%, 25V
HDR, 3x1, 0.025" PIN, 0.1" CTR
HDR, 4X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB
1/8" PHONO JACK
COG
X7R
X7R
X7R
HEADER
HEADER
CONN
0805_101_COG_50V_5%
0805_123_X7R_50V_10%
0805_683_X7R_50V_10%
1206_1uF_X7R_25V_10%
TSW-103-07-G-S
MOLEX 70553-0038_0
AJ-0356A-5P
C0805C101J5GAC
C0805C123K5RAC
C0805C683K5RAC
C1206X7R500-105KNE
TSW-103-07-G-S
70553-0038
AJ-3056A-5P
CONN, 15D SHELL, FEMALE, RT ANGLE PC
MOUNT
HDR, 4X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB
IND, FBEAD, 1206, 31@100MHz, 25%
IND, FBEAD, 1812, 120@100MHz, 25%
TRAN, SO, PNP, SOT23
CONN
AMP 747845-3
KEMET
KEMET
KEMET
VENKEL
SAMTEC
MOLEX
A/D
ELECTRONICS
AMP
HEADER
FERRITE
FERRITE
TRANS
MOLEX 70553-0038_2
HF50ACB321611-T
HF30ACB453215-T
MMBT2907ALT1
MOLEX
TDK
TDK
NATIONAL
70553-0038
HF50ACB321611-T
HF30ACB453215-T
MMBT2907ALT1
Table 1. Headphone Amp Population Option
PANASONIC
747845-3
CRD4281-5
CRD4281-5 Headphone Option
Item Qty Reference
1
11 C1,C2,C3,C7,C8,C11,
C12,C16,C18,C99,C100
2
16 C4,C5,C6,C9,C10,C13,
C14,C21,C22,C26,C27,
C101,C102C111,C112,
C115
3
4
C25,C28,C45,C46
4
2
C29,C31
5
37 C30,C33,C41,C42,C43,
C44,C49,C52,C57,C58,
C59,C60,C61,C62,C64,
C65,C66,C67,C69,C70,
C72,C79,C85,C86,C87,
C90,C91,C93,C94,C95,
C96,C97,C98,C114,
C116,C117,C118
6
10 C32,C34,C36,C40,C88,
C89,C92,C108,C113,
C84
7
2
C50,C51
8
3
C47,C48,C103
9
7
C53,C54,C56,C73,C74,
C75,C76
10 4
C77,C78,C104,C105
11
4
C80,C81,C82,C83
12 1
C109
13 1
C110
14 2
JP1,JP2
15 4
J1,J4,J6,J11
16 3
J3,J5,J8
DS308RD5A1
BILL OF MATERIALS
23
24
1
1
1
1
U7
U9
U10
Y1
Type
TRANS
RES
RES
RES
RES
RES
Package
MMBT3904LT1
9C08052A0R00J
9C08052A224J
9C08052A5602J
9C08052A2702J
9C08052A4702J
Manf.
NATIONAL
PHILIPS
PHILIPS
PHILIPS
PHILIPS
PHILIPS
Part Number
MMBT3904LT1
9C08052A0R00J
9C08052A224J
9C08052A5602J
9C08052A2702J
9C08052A4702J
RES, SO, 0805, 47, 5%, 1/10W, METAL FILM
RES,5.6K,SO,0805,5%,1/10W,METAL FILM
RES, SO, 0805, 4.7K, 5%, 1/10W, METAL FILM
RES
RES
RES
9C08052A47R0J
9C08052A5601J
9C08052A4701J
PHILIPS
PHILIPS
PHILIPS
9C08052A47R0J
9C08052A4701J
RES, SO, 0805, 39K, 5%, 1/10W, METAL FILM
RES
RES
RES
RES
RES
RES
RES
9C08052A2201J
9C08052A1000J
9C08052A3902J
9C08052A5101J
9C08052A1002J
9C08052A2002J
9C08052A6801F
PHILIPS
PHILIPS
PHILIPS
PHILIPS
PHILIPS
PHILIPS
PHILIPS
9C08052A2201J
9C08052A1000J
9C08052A3902J
9C08052A5101J
9C08052A1002J
9C08052A2002J
9C08052A6801F
9C08052A3401F
9C08052A6802J
9C08052A1003J
9C08052A2701J
MC1458
MC78L05ACP
CS4297A
CS4281 100PIN MQFP
PHILIPS
PHILIPS
PHILIPS
PHILIPS
Motorola
Motorola
CRYSTAL
CRYSTAL
9C08052A3401F
9C08052A6802J
9C08052A1003J
9C08052A2701J
MC1458
MC78L05AC
CS4297A
CS4281
24LC00
MIC2920A-TO220
MC33078D
FOX HC49S_24.576
MICROCHIP
MIRCEL
MOTOROLA
FOX
24LC00/SN
MIC2920A-3.3BT
MC33078D
FS24.576
DUAL HEADPHONE AMP
5V POS. VOLT. REG., 100ma
IC, SO, AC ’97 2.0 SERIAL CODEC w/ SRC
CS4281-100 MQFP
DS308RD5A1
RES
RES
RES
RES
AMP
VREG
CODEC
CONTROLLER
IC, SO, SOIC8, SERIAL EEPROM, 16 x 8, 2.5V EE PROM
MIC2090A,400MA,TO220
TO220
IC, SO, SOIC8, 33078, DUAL OP AMP
OP AMP
XTAL, 24.576MHz, HC49S,Fund Mode, Par Res PAR RES,
FUND
Table 1. Headphone Amp Population Option (cont.)
CRD4281-5
46
47
48
49
Part Description
TRAN, SO, NPN, SOT23
RES,220K,SO,0805,5%,1/10,METAL FILM
Item Qty Reference
22 1
Q2
23 3
R4,R7,R66
24 2
R5,R6
25 2
R8,R10
26 3
R9,R11,R34
27 6
R35,R36,R68,R70,R72,
R75
28 4
R17,R18,R19,R20
29 1
R21
30 6
R24,R25,R26,R27,R76,
R77
31 4
R30,R31,R32,R33
32 2
R64,R65
33 2
R38,R40
34 1
R39
35 2
R41,R63
36 1
R42
37 17 R45,R46,R47,R48,R49,
R50,R51,R52,R53,R54,
R56,R58,R59,R60,R61,
R62,R74
38 2
R55,R57
39 1
R69
40 1
R71
41 1
R73
42 1
U1
43 1
U3
44 1
U5
45 1
U6
Type
Package
Manf.
Part Number
CAP, 0805, C0G, 1000pF, 10%, 50V
CERM CAP, .01uF, 10%, 50V,X7R
CAP,1.0UF,SO,1206,+80/-20%,25V,Y5V
CAP, 0805, X7R, .1uF, 10%, 50V
RES, SO, 0805, 5.6K, 5%,1/10W, METAL FILM
RES, SO, 0805, 2.2K, 5%,1/10W, METAL FILM
RES, SO, 0805, 47K, 5%,1/10W, METAL FILM
RES, SO, 0805, 27K, 5%,1/10W, METAL FILM
RES, SO, 0805, 100, 5%,1/10W, METAL FILM
NPO
X7R
Y5V
ELEC PIH
ELEC PIH
X7R
RES
RES
RES
RES
RES
0805_102_C0G_50V_10%
0805_103_X7R_50V_10%
GRM42-6Y5V105Z25BL
CAP4X11U106L016
ECEA1AGE471(470 uF)
0805_104_X7R_50V_10%
9C08052A5601J
9C08052A2201J
9C08052A4702J
9C08052A2702J
9C08052A1000J
KEMET
KEMET
MURATA
PANASONIC
PANASONIC
KEMET
PHILIPS
PHILIPS
PHILIPS
PHILIPS
PHILIPS
C0805C102K5GAC
C0805C103K5RAC
GRM42-6Y5V105Z25BL
ECA-1CM100
ECA-1AM471
C0805C104K5RAC
9C08052A5601J
9C08052A2201J
9C08052A4702J
9C08052A2702J
9C08052A1000J
12
13
14
15
16
18
19
TRAN, SO, NPN, SOT23
2X6W POWER AMP
5V POS. VOLT. REG., 100ma
MIC2920A,400ma,SOT223
4 PIN SHROUDED HEADER, .08"
XTAL, 24.576MHz, CA-301, Fund Mode, Par Res
RES
TRANS
IC
VREG
VREG
CONN
PAR RES,
FUND
9C08052A0R00J
MMBT3904LT1
TDA1517P
MC78L05ACD
SOT223
B4B-PH-K
EPSON CA-301_24.576
PHILIPS
NATIONAL
PHILIPS
Motorola
MIRCEL
JST
EPSON
9C08052A0R00J
MMBT3904LT1
TDA1517P
MC78L05ACD
MI2920A-3.3BS
B4B-PB-K
CA-301_24.576M-C
2
1
1
1
1
1
1
R79,R80
Q3
U4
U2
U8
J2
Y2
Table 1. Headphone Amp Population Option (cont.)
CRD4281-5
Part Description
DS308RD5A1
Item Qty Reference
DO NOT POPULATE
1
1
C107
2
1
C106
3
2
C35,C37
4
1
C39
5
2
C23,C24
6
1
C119
7
1
R13
8
1
R78
9
3
R12,R14,R23
10 2
R15,R16
11
1
R37
25
Preliminary product information describes products which are in production, but for which full characterization data is not yet available. Advance product information
describes products which are in development and subject to development changes. Cirrus Logic, Inc. has made best efforts to ensure that the information contained
in this document is accurate and reliable. However, the information is subject to change without notice and is provided “AS IS” without warranty of any kind (express
or implied). No responsibility is assumed by Cirrus Logic, Inc. for the use of this information, nor for infringements of patents or other rights of third parties. This
document is the property of Cirrus Logic, Inc. and implies no license under patents, copyrights, trademarks, or trade secrets. No part of this publication may be copied,
reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the prior written
consent of Cirrus Logic, Inc. Items from any Cirrus Logic website or disk may be printed for use by the user. However, no part of the printout or electronic files may
be copied, reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photographic, or otherwise) without the prior
written consent of Cirrus Logic, Inc.Furthermore, no part of this publication may be used as a basis for manufacture or sale of any items without the prior written consent
of Cirrus Logic, Inc. The names of products of Cirrus Logic, Inc. or other vendors and suppliers appearing in this document may be trademarks or service marks of
their respective owners which may be registered in some jurisdictions. A list of Cirrus Logic, Inc. trademarks and service marks can be found at http://www.cirrus.com.

CRD4281-5

Transcription

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