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CRD4201-2
CrystalClearTM AC '97 Six Channel Primary ACR Audio Reference Design
Features
l Six
Description
The CRD4201-2 Advanced Communications Riser (ACR) reference design features six channel analog audio outputs and a optical S/PDIF digital output. This board uses the CS4201 audio codec which has several advanced features such as a built-in headphone amplifier, up to 30 dB of microphone boost, and serial digital audio outputs. The CRD4201-2 reference design is available by ordering the CMK4201-2 manufacturing kit. This kit includes a full set of schematic design files (OrCAD(R) 7.2 and OrCAD(R) 9.1 formats), PCB job files (PADS(R) ASCII), PCB artwork files, and bill of materials. This reference design offers significant cost savings over competing solutions and can be easily modified to meet your specific design goals.
Channel Analog Audio Output l Built-in Headphone Amplifier l CS4201 audio codec and CS4334 DACs l 20-bit D to A conversion (DAC) l 18-bit A to D conversion (ADC) l S/PDIF (IEC-958) optical digital output l Complete suite of Analog I/O connections:
- Line, Mic, CD, Video and Aux Inputs - Line Front, and Line Rear Outputs
l 2-layer
low cost PC board l Meets Intel (R) AC `97 version 2.1 specification l Exceeds Microsoft's(R) PC 99 and PC-2001 audio performance requirements.
ORDERING INFO CMK4201-2 (Manufacturing Kit)
Microphone Input Front Channel Outputs Front Channel Outputs Headphone Output Rear Channel Outputs Center Channel and Sub-Woofer Outputs S/PDIF Digital Optical Output
MIC IN INT MODEM LINE IN LINE OUT HEADPH OUT SURR OUT CNT/LFE OUT CD IN VIDEO IN AUX IN
Cirrus Logic CRD4201-2
CS4201
S/PDIF OUT
Preliminary Product Information
P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com
This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice.
Copyright Cirrus Logic, Inc. 2001 (All Rights Reserved)
JUN `01 DS483RD2A2 1
CRD4201-2
TABLE OF CONTENTS
1. GENERAL INFORMATION ...................................................................................3 2. SCHEMATIC DESCRIPTION ................................................................................3 2.1 CS4201 Audio Codec .................................................................................3 2.2 Analog Inputs ..............................................................................................3 2.3 Rear, Center and Sub-Woofer Outputs ......................................................4 2.4 Front Channel and Headphone Outputs ....................................................4 2.5 S/PDIF Optical Output ...............................................................................4 2.6 ACR Connector and EEPROM ...................................................................4 2.7 Component Selection .................................................................................4 2.8 EMI Components ........................................................................................5 3. GROUNDING AND LAYOUT ................................................................................5 3.1 Partitioned Voltage and Ground Planes .....................................................5 3.2 CS4201 Layout Notes .................................................................................5 4. REFERENCES .......................................................................................................6 4.1 ADDENDUM ...............................................................................................6 5. BILL OF MATERIALS .........................................................................................19
LIST OF FIGURES
Figure 1. Block Diagram ....................................................................................................7 Figure 2. CS4201 Audio Codec .........................................................................................8 Figure 3. Analog Inputs ......................................................................................................9 Figure 4. Rear, Center, and Sub-Woofer Outputs ...........................................................10 Figure 5. Front Channel and Headphone Outputs ..........................................................11 Figure 6. S/PDIF Optical Output ......................................................................................12 Figure 7. ACR Connector .................................................................................................13 Figure 8. PCB Layout: Top Assembly Drawing ................................................................14 Figure 9. PCB Layout: Top Layer ....................................................................................15 Figure 10. PCB Layout: Bottom Layer .............................................................................16 Figure 11. PCB Layout: Drill Drawing ..............................................................................17 Figure 12. PCB Layout: Top Silkscreen ..........................................................................18
Contacting Cirrus Logic Support
For a complete listing of Direct Sales, Distributor, and Sales Representative contacts, visit the Cirrus Logic web site at: http://www.cirrus.com/corporate/contacts/
Microsoft , Windows 95, Windows 98 and Windows Millennium and WHQL is registered trademark of Microsoft. CrystalClear is a trademark 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) 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.
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1. GENERAL INFORMATION
The CRD4201-2 reference design is an ACR card that features six channel CD quality analog audio outputs. The card includes a CS4201 AC '97 audio codec and two CS4334 24-bit serial stereo DACs. This combination gives the CRD4201-2 a rich feature set and industry leading audio performance. The CS4201 on this card is configured as the primary AC `97 audio codec. If there is an AC `97 audio codec on the motherboard, it must be disabled. The CS4201 audio codec has a stereo 20-bit DAC, a stereo 18-bit ADC, and a very flexible analog audio mixer. The serial data outputs are paired with two CS4334 DACs to provide four additional channels of analog audio. The CS4201 also features three stereo pairs of line level analog inputs, a microphone input, and a stereo pseudo-differential CD input. The input signals can be routed to the ADC for recording or mixed together for recording and direct playback. The CS4201 has internal registers that are used to control its various features such as volume levels, audio muting, and signal routing. The CS4201 maintains high audio quality and exceeds the Microsoft(R) PC-99 and PC-2001 audio performance specification. The CS4201 audio codec communicates to the audio controller across the ACR interface through the AC-Link. The AC-Link is a 5-wire serial digital interface that transfers digital audio between the two devices and also sends commands from the audio controller to the CS4201's registers. For more information on the AC-Link, see the Intel(R) AC'97 version 2.1 specification.
2.1
CS4201 Audio Codec
The CS4201 audio codec is shown in Figure 2. The input signals to the CS4201 originate from the analog inputs in Figure 3, and the analog outputs are shown in Figure 5. AFLT1 and AFLT2 (pins 29, 30) require 1000 pF NPO/COG capacitors connected to analog ground. These capacitors provide a single pole lowpass filter at the inputs of the ADC. No other input filtering is required. FLT3D, FLTI, and FLTO (pins 32, 33, 34) form the internal analog 3D enhancement filter. The FLT3D pin requires a 0.01 F capacitor to analog ground. The FLT0 and FLT1 pins require a NPO/COG 1000 pF series capacitor. The AC-Link may require series termination resistors to prevent reflections. These are normally placed as close as possible to the transmitting end of a particular AC-Link signal. Both SDATA_IN (pin 8) and BIT_CLK (pin 6) are outputs of the CS4201 and each have a 47 series termination resistor. The CS4201 is powered by separate analog and digital power supplies, each with their own respective grounds. The AGND symbols refer to analog ground, and DGND symbols refer to digital ground. The analog and digital grounds must be connected together. For best results, connect them together at a single point with a 0.050 inch trace underneath the CS4205. Each power pin needs separate decoupling capacitors. The CS4201 audio codec uses a 0.1 uF ceramic capacitor for each of the 3.3 V digital and 5 V analog supply pins. These decoupling capacitors are placed as close as possible to their respective pins.
2. SCHEMATIC DESCRIPTION
The block diagram in Figure 1 illustrates the interconnections between the schematic pages found at the end of this document. Sections 2.1 through 2.8 describe the circuitry contained in these schematics.
2.2
Analog Inputs
The LINE_IN, VIDEO, and AUX_IN stereo input jacks in Figure 3 are connected to a 6 dB voltage divider and AC coupled to the CS4201. The voltage divider allows input signal levels of up to
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CRD4201-2
2 Vrms. The 2.2 F AC coupling capacitor values are used to minimize low frequency roll-off. The microphone circuit is AC coupled by a 1 F capacitor to minimize low frequency roll-off. The microphone circuit provides low voltage phantom power for electret microphones. Phantom power is derived from the +5 V analog supply and provides a maximum of 4.2 V under no load and a minimum of 2.0 V under a 0.8 mA load. These parameters are required by PC-99 and PC-2001. The CS4201 features a pseudo-differential CD input that minimizes common mode noise and interference. Each CD signals acts as one side of the differential input and CD_COM acts as the other side. CD_COM is used as the common return path for both the left and right channels. ing headphones with impedances as low as 32 . The headphone outputs are AC coupled through 220 F capacitors. These large capacitor values create excellent low frequency response even under 32 loads.
2.5
S/PDIF Optical Output
The S/PDIF (IEC-958) digital output shown in Figure 6, is compatible with digital outputs on consumer devices such as Mini Disk recorders and consumer stereo receivers. The S/PDIF output operates at a fixed sampling frequency of 48 kHz. It uses an industry standard TOSLINK digital optical transmitter, the Toshiba TOTX-173.
2.6
ACR Connector and EEPROM
2.3
Rear, Center, and Sub-Woofer Outputs
The outputs in Figure 4 drive the rear speakers (surround), center speaker (CNT), and sub-woofer (LFE) in a six channel audio application. These four outputs are driven digitally from the CS4201 through two serial output ports and converted to analog audio through two high-performance CS4334 24-bit stereo DACs.
The ACR connector is shown in Figure 7. ACR is a motherboard interface that supports audio, modem, LAN, and DSL subsystems. ACR applications are targeted at OEMs, system manufacturers, and system integrators who wish take advantage of physically separating their audio, modem, or LAN circuitry from the PC motherboard. ACR accomplishes this without the additional cost associated with the interface circuitry required for a PCI bus add-in card. The CRD4201-2 uses a 24LC09 EEPROM to store configuration data for plug-and-play enumeration. The 24LC09 is designed specifically for ACR applications. The base address of the device is internally wired to 0xB0. The EEPROM holds the Subsystem Vendor ID and Subsystem ID. For ACR design specifications, programming utilities, and information on programming the EEPROM see the Advanced Communication Riser Special Interest Group (ACR SIG) homepage at http://www.acrsig.org/. Note: an ACR signal called PRIMARY_DN# is normally tied to ID0# on the CS4201. This signal is used to set the AC '97 codec on the ACR card as either the primary or secondary audio codec. The CRD4201-2 is designed to have the only audio coDS483RD2A2
2.4
Front Channel and Headphone Outputs
Figure 5 details the Headphone Output and Line Output circuits. The Line Outputs are the main analog outputs in a two channel system or the Front Outputs in a six channel audio system. The Line Outputs of the CS4201 (pins 35 and 36) are buffered by a Motorola MC34072 dual opamp. The MC34072 is a high performance low noise op-amp well suited for audio applications. Line Out is designed to drive high impedance loads of 10 K or higher. The CS4201 has a built in headphone amplifier on pins 39 and 41. These outputs are capable of driv-
4
CRD4201-2
dec in the system so the PRIMARY_DN# signal trace has been removed. completely isolated from the digital section with a 100 mil partition. Partitioning is defined as the absence of copper on all signal layers. The analog and digital sections each have their own separate ground planes. All analog components, power traces, and signal traces are routed over the analog ground plane. Digital components, power traces and signal traces are not allowed to crossover into the analog section. The CS4201 audio codec is placed at the transition point between the analog and digital ground planes. The pins are arranged on the CS4201 so that the analog and digital signals are separated from each other. The analog and digital ground planes must be tied together for the CS4201 to maintain proper voltage references. For best results, the two ground planes are tied together with a single 50 mil trace under the CS4201 near its digital ground pins. Data converters are generally susceptible to noise on the crystal pins. In order reduce noise from coupling onto these pins, the area around the 24.576 MHz crystal and its signal traces is filled with copper on the top and bottom of the PCB and attached to digital ground. A separate chassis ground provides a noise-free reference point for all of the EMI suppression components. The chassis ground plane is connected to the analog ground plane at the external jacks.
2.7
Component Selection
Great attention was given to the particular components used on the CRD4201-2 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 SMT package. Only single package passive components. No resistor packs. This reduces the risk of crosstalk between analog audio signals. All components except connectors, jumpers and the 24.576 MHz crystal are in surface mount packages. Dual footprints are used for the 24.576 MHz crystal.
*
*
2.8
EMI Components
Optional capacitors and inductors are included to help the board meet EMI compliance tests, such as FCC Part 15. Choose these component values according to individual requirements.
3. GROUNDING AND LAYOUT
The component layout and signal routing of the CRD4201-2 provides a good model for laying out your own ACR add-in card.
3.2
CS4201 Layout Notes
3.1
Partitioned Voltage and Ground Planes
It is critical for good audio performance to separate digital and analog sections to prevent digital noise from effecting the performance of the analog circuits. The analog section of the CRD4201-2 is
Refer to the CS4201 Data Sheet for analog and digital partitioning guidelines and bypass capacitors placement. Pay special attention to the bypass capacitors on REFFLT, AFLT1, AFLT2 and the power supply capacitors.
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5
CRD4201-2
4. REFERENCES
1) Intel(R), Audio Codec `97 Component Specification, Revision 2.1, May 22, 1998. http://developer.intel.com/ial/scalableplatforms/audio/ 2) ACR Special Interest Group, ACR Specification 1.0 http://www.acrsig.org/ 3) Cirrus Logic, CS4201 Audio Codec `97 Data Sheet http://www.cirrus.com/products 4) Steve Harris, Clif Sanchez, Personal Computer Audio Quality Measurements, Version 1.0 http://www.cirrus.com/pubs/meas100.pdf 5) Microsoft, PC Design Guidelines, http://www.microsoft.com/hwdev/desguid/ 6) M. Montrose, Printed Circuit Board Design Techniques for EMC Compliance (2nd edition), IEEE Press, New York: 2000.
4.1
* * *
ADDENDUM
Schematic drawings Layout drawings Bill of materials
6
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CRD4201-2
ANALOG_IN
LINE_IN_L LINE_IN_R CD_IN_L CD_IN_R CD_COM VIDEO_IN_L VIDEO_IN_R AUX_IN_L AUX_IN_R MIC_IN PHONE_IN MONO_OUT PC_BEEP
CS4201
LINE_IN_L LINE_IN_R CD_IN_L CD_IN_R CD_COM VIDEO_IN_L VIDEO_IN_R AUX_IN_L AUX_IN_R MIC_IN SPDIF/SDO2 PRIM_DN# PHONE_IN MONO_OUT PC_BEEP ASDOUT LINE_OUT_L LINE_OUT_R VREFOUT HP_OUT_L HP_OUT_R HP_OUT_C
ANALOG_OUT
LINE_OUT_L LINE_OUT_R VREFOUT HP_OUT_L HP_OUT_R HP_OUT_C
ANALOG_OUT
SERIAL PORT
SDOUT SCLK LRCLK SDOUT SCLK LRCLK
ARST# ABITCLK ASYNC
CS4201 ANALOG_IN
SPDIF/SDO2 ABITCLK
ASDIN
SERIAL PORT ACR_BUS
PRIM_DN# ARST# ABITCLK ASYNC ASDOUT
ASDIN
SPDIF_OUT
SPDIF/SDO2 SPDIF_TX
SPDIF_TX
ACR_BUS
SPDIF_OUT
Figure 1. Block Diagram
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7
LINE_OUT_L
LINE_OUT_R
MONO_OUT
8
+3.3VD +5VA
25 38 AVdd2 DVdd1 DVdd2 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 Vrefout REFFLT AFLT1 AFLT2 FLT3D FLTI FLTO XTL_IN XTL_OUT HPCFG HP_OUT_C GPIO0/LRCLK GPIO1/SDOUT ID1# ID0# 45 46 31 40 43 44 EAPD/SCLK 47 SPDO/SDO2 48 MONO_OUT 37 HP_OUT_R 41 HP_OUT_L 39 LINE_OUT_R 36 LINE_OUT_L 35 RESET# 11 SYNC 10 SDATA_IN 8 SDATA_OUT 5 BIT_CLK 6 DVss2 7 DVss1 4 AVss2 1 9 12 26 42
+3.3VD U1 CS4201
+5VA
C1 0.1uF X7R
C2 0.1uF X7R
C3 0.1uF X7R
C4 0.1uF X7R
AVdd1
AVss1
DGND
14
AGND R2 47
15 16 17 18 19 20 21 22 23 24 28 27 29 30 32 33 34 2 3
PC_BEEP
13
R1 ABITCLK ASDOUT ASDIN ASYNC ARST# LINE_OUT_L LINE_OUT_R HP_OUT_L HP_OUT_R MONO_OUT SPDIF/SDO2 SCLK PRIM_DN#
47
PHONE_IN AUX_IN_L AUX_IN_R VIDEO_IN_L VIDEO_IN_R CD_IN_L CD_COM CD_IN_R MIC_IN LINE_IN_L LINE_IN_R VREFOUT
DGND
AGND
C5 2.2uF Y5V
C6 0.1uF X7R
C7 1000pF NPO
C8 1000pF NPO
C9 0.01uF X7R
C10 1000pF NPO
HP_OUT_C LRCLK SDOUT
NOTE: In order to be GND TIE 0.050 inches compatible with a wider range of motherboards, the PRIMARY_DN# trace has been
AGND DGND
AGND
physically cut on the CRD4201-2.
Y1
24.576 MHz C13 1000pF NPO C14 22pF NPO C15 22pF NPO
C11 1000pF NPO
C12 1000pF NPO
AGND
DGND
DGND
CRD4201-2
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Figure 2. CS4201 Audio Codec
CD IN LINE IN
R3 J1
4 3
L1 R4 LINE_IN_R + 6.8K C17 + CD_IN_R
5
100 2.2uF ELEC
C16
J2 R5 R6 6.8K AGND
2 1
2.2uF ELEC
4
31@100MHz 47K
AGND
3
2 1
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R7 CD_COM R8 LINE_IN_L + 6.8K C21 + 2.2uF ELEC 100 C18 4.7uF ELEC R9 47K
L2
31@100MHz
Connect CGND to AGND at
AGND R10 6.8K
C19 100pF NPO
C20 100pF NPO
AGND
the jack
R11 + CD_IN_L AGND CGND 100 C22 2.2uF ELEC
L3
31@100MHz R12 47K
AGND
VIDEO IN
R13 J3
4
MIC IN
+5VA 6.8K + VIDEO_IN_R
5
L4
C23
R14
2.2K
R15
1.5K
J4 R16
2 1
2.2uF ELEC R17 100
4
31@100MHz 6.8K
C24
3 2
1uF Y5V
AGND
MIC_IN
1
L5 + VIDEO_IN_L
R18
6.8K
C25
2.2uF ELEC
Connect CGND to AGND at the jack
C26 100pF NPO
C27 100pF NPO
+ C28 10uF ELEC
C29 NO POP
31@100MHz R19 6.8K
AGND
AGND CGND
AGND
AGND
AGND
AUX IN PC SPEAKER IN
R20 + AUX_IN_R J6 31@100MHz
2 1
L6
6.8K
C30
L7
R21
47K
C31
J5 R22 6.8K
2.2uF ELEC
0.1uF X7R
PC_BEEP
4
31@100MHz
AGND
3 2
R23 4.7K
1
C32 2700pF X7R
L8 + AUX_IN_L DGND
R24
6.8K
C33
2.2uF ELEC AGND AGND
-3 dB corners at 60 Hz and 13.8 kHz (Ri >= 28 kOhm)
31@100MHz R25 6.8K
AGND
AGND
INTERNAL MODEM CONNECTION
R26 PHONE_IN + 6.8K C34 2.2uF ELEC
L9
J7 R27 6.8K
4
31@100MHz
AGND
3 2
1
L10 MONO_OUT +
R28
0
C35
2.2uF ELEC
31@100MHz R29 47K
AGND
AGND
Figure 3. Analog Inputs
CRD4201-2
9
SDOUT
2 3 4 MCLK AOUTL 8 DEM#/SCLK VA+ 7 6 LRCK AGND
1
SDATA
AOUTR
5
+
+
1
2 3 4 MCLK AOUTL 8 DEM#/SCLK VA+
SDATA 7 6 LRCK AGND
AOUTR
5
+
+
10
+5VA
SURROUND JACK (REAR CHANNEL OUTPUT)
U2 C36
4
CS4334 10uF ELEC R31 560
2 1
R30
560
J8
C37
10uF ELEC
R32 270K +5VA
R33 270K
R34 47K
R35 47K
C38 2700pF X7R
C39 2700pF X7R
Connect CGND to AGND at the jack
+ C40 10uF ELEC AGND AGND
C41 0.1uF X7R
C42 0.1uF X7R CGND AGND
AGND
CNT/LFE JACK (CENTER CHANNEL AND SUB-WOOFER)
U3 C43 10uF ELEC CS4334 R36 560
4
J9
C44
R37
560
2 1
SPDIF/SDO2 SCLK LRCLK ABITCLK
10uF ELEC
R38 270K
R39 270K
R40 47K
R41 47K
C45 2700pF X7R
C46 2700pF X7R
Connect CGND to AGND at the jack
AGND
AGND
AGND
CGND
AGND
CRD4201-2
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Figure 4. Rear, Center, and Sub-Woofer Outputs
8
1
+
+
4
Vcc
R47
6
27K MC34072D AGND AGND C53 22pF NPO 33K C54
LINE_OUT_L
Vee
+
+
+
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+5VA
LINE OUT JACK (FRONT CHANNEL OUTPUTS)
U4A C48
4
VREFOUT
2
3
+ MC34072D C49 10uF ELEC
10uF ELEC
J10
2 1
AGND C47 27K R42 33K 22pF NPO R44 220K R45 220K C50 100pF NPO
+5VA
Connect CGND to AGND at the jack
R43
C51 100pF NPO
LINE_OUT_R U4B
5
C52 0.1uF X7R
+
7
CGND
AGND
R46
HEADPHONE JACK
J11
4
HP_OUT_R C55 220uF ELEC 1uF ELEC
220uF ELEC
HP_OUT_L C56
2 1
HP_OUT_C
R48 10K
R49 10K
Connect CGND to AGND at the jack
C57 100pF NPO
C58 100pF NPO
AGND
CGND
AGND
Figure 5. Front Channel and Headphone Outputs
CRD4201-2
11
CRD4201-2
SPDIF_TX
J12
5
+5VD
4 3
DGND
R50 C59 0.1uF X7R
8.2K
2 1 6
TOTX-173 DGND
DGND
Figure 6. S/PDIF Optical Output
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GND
2
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+3.3VD P1 C60 0.1uF X7R + C61 10uF ELEC +5VD +12VD
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 AUDIO_MUTE# AGND MONO_OUT/PC_BEEP RSVD(4) RSVD(5) PRIMARY_DN# -12V GND +12V GND +5VD AUDIO_PWRDN MONO_PHONE RSVD(1) RSVD(2) RSVD(3) GND +5Vdual/+5Vsb USB_OC# GND USB+ USBA1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11
NOTE: In order to be compatible with a wider range of motherboards, the PRIMARY_DN# trace has been physically cut on the
CRD4201-2.
PRIM_DN#
populate only one resistor
R51 R52 NO POP 0 SPDIF/SDO2 SPDIF_TX
DGND
+3.3VD
+5VD
ASDOUT ARST# R53 R54 47 NO POP
ASYNC
+3.3VD
C62 0.1uF X7R ASDIN ABITCLK
B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 B24 GND RSVD(6) RSVD(7) +3.3VD GND SDATA_OUT RESET# SDATA_IN3 GND SDATA_IN2 GND MSTRCLK SCL GND S/PDIF_IN GND +3.3Vdual/+3.3Vsb GND SYNC GND SDATA_IN1 GND SDATA_IN0 GND BITCLK SDA
A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24
+ C63 10uF ELEC
populate R54 for primary codec populate R53 for secondary codec
R55 4.7K R56 4.7K
DGND +3.3VD
ACR Connector
DGND DGND +3.3VD U5 +5VA U6
1 IN OUT 3 1 2 3 4 8 7 6 5 NC1 NC2 NC3 Vss Vcc WP SCL SDA
R57 NO POP
+12VD
SCL SDA 24LC09
C64 0.1uF X7R
R58 0
DGND
C65 0.1uF X7R MC78M05C
+ C66 10uF ELEC
+ C67 10uF ELEC
EEPROM address "0xB0"
DGND DGND
DGND
AGND
Figure 7. ACR Connector
CRD4201-2
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CRD4201-2
Figure 8. PCB Layout: Top Assembly Drawing
14
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Figure 9. PCB Layout: Top Layer
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CRD4201-2
Figure 10. PCB Layout: Bottom Layer
16
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CRD4201-2
(
Figure 11. PCB Layout: Drill Drawing
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Figure 12. PCB Layout: Top Silkscreen
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5. BILL OF MATERIALS
Manufacturer KEMET C0805C104K5RAC CAP, 0805, X7R, .1uF, 10%, 50V Part Number Description
Item
Quantity
Reference
DS483RD2A2
KEMET KEMET KEMET KEMET PANASONIC ECE-V1VS2R2SR C0805C220K5GAC CAP, 0805, C0G, 22pF, 10%, 50V CAP, SMT A, ELEC, 2.2uF, 20%, 35V C0805C103K5RAC CAP, 0805, X7R, .01uF, 10%, 50V C0805C102K5GAC CAP, 0805, C0G, 1000pF, 10%, 50V C1206C225M8VAC CAP, 1206, Y5V, 2.2uF, 20%, 10V PANASONIC KEMET KEMET PANASONIC ECE-V1CA100R C0805C105M8VAC C0805C101J5GAC ECE-V1ES4R7SR CAP, SMT A, ELEC, 4.7uF, 20%, 25V CAP, 0805, COG, 100pF, 5%, 50V CAP, 0805, Y5V, 1uF, 20%, 10V CAP, SMT B, ELEC, 10uF, 20%, 16V NO POP KEMET KEMET PANASONIC PANASONIC LZR ELECTRONICS MOLEX LZR ELECTRONICS MOLEX LZR ELECTRONICS NO POP C0805C272K5RAC C0805C101J5GAC ECE-V0GA221P ECE-V1HA010R SJ372 70553-0003 SJ374 70553-0036 SJ373 NO POP CAP, 0805, X7R, 2700pF, 10%, 50V CAP, 0805, C0G, 100pF, 5%, 50V CAP, SMT D, ELEC, 220uF, 20%, 4V CAP, SMT B, ELEC, 1uF, 20%, 50V CONN, 1/8" DOUBLE SW. STEREO PHONE JACK HDR, 4X1, 0.025" PIN, 0.1" CTR, 15u" AU CONN, 1/8" SINGLE SW. STEREO PHONE JACK HDR, 2X1, 0.025" PIN, 0.1" CTR, 150u" SN/PB CONN, 1/8" NON-SW. STEREO PHONE JACK
1
14
C1,C2,C3,C4,C6,C31,C41,
C42,C52,C59,C60,C62,C64,
C65
2
1
C5
3
6
C7,C8,C10,C11,C12,C13
4
1
C9
5
4
C14,C15,C47,C53
6
10
C16,C17,C21,C22,C23,C25,
C30,C33,C34,C35
7
1
C18
8
4
C19,C20,C26,C27
9
1
C24
10
12
C28,C36,C37,C40,C43,C44,
C48,C49,C61,C63,C66,C67
11
1
C29
12
5
C32,C38,C39,C45,C46
13
4
C50,C51,C57,C58
14
2
C54,C55
15
1
C56
16
1
J1
17
4
J2,J4,J5,J7
18
1
J3
19
1
J6
CRD4201-2
20
4
J8,J9,J10,J11
19
20
TOSHIBA TDK HF50ACB321611-T IND, FBEAD, 1206, 31@100MHz, 25% TOTX173 CONN, OPTICAL TOSLINK TRANSMITTER NONE PHILIPS PHILIPS PHILIPS 9C08052A6801F RES, SO, 0805, 6.8K, 1%, 1/10W, METAL FILM 9C08052A1000J RES, SO, 0805, 100, 5%, 1/10W, METAL FILM 9C08052A47R0J RES, SO, 0805, 47, 5%, 1/10W, METAL FILM EDGE CONNECTOR ACR BUS CONNECTOR PHILIPS 9C08052A4702J RES, SO, 0805, 47K, 5%, 1/10W, METAL FILM PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS NO POP NO POP CIRRUS LOGIC 9C08052A2703J 9C08052A3302F 9C08052A2702F 9C08052A2203J 9C08052A1002J 9C08052A8201J NO POP NO POP CS4201-JQ 9C08052A5600J 9C08052A0R00J 9C08052A4701J 9C08052A1501J 9C08052A2201J RES, SO, 0805, 2.2K, 5%, 1/10W, METAL FILM RES, SO, 0805, 1.5K, 5%, 1/10W, METAL FILM RES, SO, 0805, 4.7K, 5%, 1/10W, METAL FILM RES, SO, 0805, 0, 5%, 1/10W, METAL FILM RES, SO, 0805, 560, 5%, 1/10W, METAL FILM RES, SO, 0805, 270K, 5%, 1/10W, METAL FILM RES, SO, 0805, 33K, 1%, 1/10W, METAL FILM RES, SO, 0805, 27K, 1%, 1/10W, METAL FILM RES, SO, 0805, 220K, 5%, 1/10W, METAL FILM RES, SO, 0805, 10K, 5%, 1/10W, METAL FILM RES, SO, 0805, 8.2K, 5%, 1/10W, METAL FILM NO POP NO POP IC, TQFP, AC '97 2.1 SERIAL CODEC W/ HP AMP + SRC
21
1
J12
22
10
L1,L2,L3,L4,L5,L6,L7,L8,
L9,L10
23
1
P1
24
3
R1,R2,R54
25
4
R3,R7,R11,R17
26
14
R4,R6,R8,R10,R13,R16,R18,
R19,R20,R22,R24,R25,R26,
R27
27
9
R5,R9,R12,R21,R29,R34,
R35,R40,R41
28
1
R14
29
1
R15
30
3
R23,R55,R56
31
3
R28,R51,R58
32
4
R30,R31,R36,R37
33
4
R32,R33,R38,R39
34
2
R42,R46
35
2
R43,R47
36
2
R45,R44
37
2
R48,R49
38
1
R50
39
2
R52,R57
40
1
R53
CRD4201-2
DS483RD2A2
41
1
U1
42 MOTOROLA Microchip MOTOROLA FOX FS24.576 XTAL, 24.576MHz, HC49S, Fund Mode, Par Res MC78M05CDT IC, SO, +5V REGULATOR, DPAK, 4%, 500mA 24LC09-I/SN IC, SO, SOIC8, SERIAL EEPROM, 4 x 256 x 8 MC34072D IC, SO, SOIC8, 34072, SINGLE SUPPLY DUAL OP AMP
2
U2,U3
CIRRUS LOGIC
CS4334-KS
IC, SO, SOIC8, DAC, STEREO
43
1
U4
DS483RD2A2
44
1
U5
45
1
U6
46
1
Y1
CRD4201-2
21

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