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CRD4201-2S
CrystalClearTM AC '97 Six Channel Secondary ACR Audio Reference Design
Features
l Six
Description
The CRD4201-2S Advanced Communications Riser (ACR) reference design features four channel analog audio outputs and an optical S/PDIF digital output. This board is designed to provide the rear left, rear right, center and sub-woofer channels in a six channel ACR audio sub-system. The front left and front right channels are provided by the primary audio codec on the motherboard. This board uses the CS4201 configured as a secondary audio codec which has several advanced features. These include a serial digital audio output and up to 30 dB of microphone boost. The CRD4201-2S reference design is available by ordering the CMK4201-2 manufacturing kit. This kit includes the CRD4201-2, the CRD4201-2S, a full set of schematic design files (OrCAD(R) format), 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. ORDERING INFO CMK4201-2 (Manufacturing Kit)
Channel Analog Audio Output
- Two channels on the Motherboard - Four channels on the CRD4201-2S
l CS4201
audio codec and CS4334 DAC 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 Rear, and Line Center/Sub-Woofer Outputs
l 2-layer
low cost PC board l Meets Intel (R) AC `97 version 2.1 specification l Exceeds Microsoft's(R) PC-2001 audio performance requirements.
Microphone Input Line Input Rear Channel Outputs
MIC IN INT MODEM LINE IN SURR OUT CD IN VIDEO IN AUX IN
Cirrus Logic CRD4201-2S
Center Channel and Sub-Woofer Outputs
CS4201
CNT/LFE OUT
S/PDIF Digital Optical Output
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)
JUL `01 DS483RD2SA1 1
CRD4201-2S
TABLE OF CONTENTS
1. GENERAL INFORMATION ...................................................................................3 2. SCHEMATIC DESCRIPTION ................................................................................3 2.1 CS4201 Audio Codec .................................................................................3 2.2 Analog Inputs ..............................................................................................4 2.3 Center and Sub-Woofer Outputs ................................................................4 2.4 Rear Channel 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. Center Channel and Sub-Woofer Outputs ........................................................10 Figure 5. Rear Channel 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.
2
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1. GENERAL INFORMATION
The CRD4201-2S reference design is an ACR card that features four channel CD quality analog audio outputs. Combined with a CS4201 audio codec on the motherboard, the CRD4201-2S forms the rear left, rear right, center, and sub-woofer outputs of a six channel PC audio sub-system. The card includes a CS4201 AC '97 audio codec and a CS4334 24-bit serial stereo DAC. This combination gives the CRD4201-2S a rich feature set and industry leading audio performance. The CS4201 on this card is configured as the secondary AC `97 audio codec. This board must be used in conjunction with a CS4201 audio codec on the motherboard. For applications requiring a complete six channel audio subsystem on a single ACR card, use the CRD4201-2 also included in the CMK4201-2 manufacturing kit. The CS4201 audio codec has a stereo 20-bit DAC providing 2 channels of audio output, a stereo 18bit ADC, and a very flexible analog audio mixer. A CS4334 DAC is connected to the CS4201 serial output to provide two 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. 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. Note: this design is based on the CRD4201-1 six channel reference design with some population option changes.
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, and 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. The SDATA_IN (pin 8) output of the CS4201 has 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 tied together. For best results, connect them together at a single point with a 0.050 inch trace underneath the CS4201. Each power pin needs separate decoupling capacitors. The CS4201 audio codec uses a 0.1 F ceramic capacitor for each of the
3
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CRD4201-2S
3.3 V digital and 5 V analog supply pins. These decoupling capacitors are placed as close as possible to their respective pins. amp well suited for audio applications. Line Out is designed to drive high impedance loads of 10 K or higher.
2.2
Analog Inputs
2.5
S/PDIF Optical Output
The LINE_IN, VIDEO_IN, 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 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 signal 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.
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
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 CRD4201-2S 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/.
2.3
Center and Sub-Woofer Outputs
The outputs in Figure 4 drive the center speaker (CNT) and sub-woofer (LFE) in a six channel audio application. These outputs are driven digitally from the CS4201 through a serial output port and converted to analog audio through a high-performance CS4334 24-bit stereo DAC.
2.4
Rear Channel Outputs
Figure 5 details the Rear Channel Output circuit. These are the Rear L and Rear R Outputs in a six channel audio system. They are driven by the Line Output pins of the CS4201. The Line Outputs of the CS4201 (pins 35 and 36) are buffered by a Motorola MC34072 dual op-amp. The MC34072 is a high performance low noise op4
2.7
Component Selection
Great attention was given to the particular components used on the CRD4201-2S board with cost, performance, and package selection as the most important factors. Listed are some of the guidelines used in the selection of components:
DS483RD2SA1
CRD4201-2S
* * 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 and jumpers are in surface mount packages. 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. 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.
*
2.8
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 CRD4201-2S 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
Refer to the CS4201 Data Sheet for analog and digital partitioning guidelines and bypass capacitor placement. Pay special attention to the bypass capacitors on REFFLT, AFLT1, AFLT2 and the power supply capacitors.
It is critical for good audio performance to separate digital and analog sections to prevent digital noise from affecting the performance of the analog circuits. The analog section of the CRD4201-2S is 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.
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5
CRD4201-2S
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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CRD4201-2S
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 HP_OUT_L HP_OUT_R HP_OUT_C LINE_OUT_L LINE_OUT_R VREFOUT
ANALOG_OUT
LINE_OUT_L LINE_OUT_R VREFOUT HP_OUT_L HP_OUT_R HP_OUT_C
ANALOG_OUT
AUX_IN_L AUX_IN_R MIC_IN SPDIF/SDO2 PRIM_DN#
SERIAL PORT
SDOUT SCLK LRCLK SDOUT SCLK LRCLK
ABITCLK
ASYNC
ARST#
MONO_OUT PC_BEEP
CS4201 ANALOG_IN
SPDIF/SDO2 ABITCLK
ASDIN
PHONE_IN
ASDOUT
SERIAL PORT ACR_BUS
PRIM_DN# ASDOUT ASYNC ARST#
ABITCLK
ASDIN
SPDIF_OUT
SPDIF/SDO2 SPDIF_TX SPDIF_TX
ACR_BUS
SPDIF_OUT
Figure 1. Block Diagram
DS483RD2SA1
7
LINE_OUT_L
LINE_OUT_R
MONO_OUT
8
+3.3VD +5VA
25 38 AVdd2 4 7 6 AVss2 1 9 12 PC_BEEP PHONE AUX_L 10 11 35 36 39 41 37 48 47 45 46 31 HPCFG HP_OUT_C GPIO0/LRCLK GPIO1/SDOUT 40 43 44 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 ID0# ID1# EAPD/SCLK SPDO/SDO2 MONO_OUT HP_OUT_L HP_OUT_R LINE_OUT_R LINE_OUT_L SYNC RESET# SDATA_IN SDATA_OUT 5 8 BIT_CLK DVdd1 DVdd2 DVss1 DVss2 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 R2 47
15 16 17 18 19 20 21 22 23 24 28
AGND 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
27 29 30 32 33 34 2 3
PC_BEEP
13 14
R1 ABITCLK ASDOUT ASDIN ASYNC ARST#
0
DGND
AGND
LINE_OUT_L LINE_OUT_R HP_OUT_L HP_OUT_R MONO_OUT SPDIF/SDO2 SCLK PRIM_DN#
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
AGND
Y1
C11 1000pF NPO
C12 1000pF NPO
C13 1000pF NPO
NO POP C14 NO POP
C15 NO POP
AGND
DGND
DGND
CRD4201-2S
DS483RD2SA1
Figure 2. CS4201 Audio Codec
CD IN LINE IN
R3 J1
4 3
L1 R4 LINE_IN_R + AGND 6.8K C17 + CD_IN_R 2.2uF ELEC
100
C16
J2 R5
5 2 1
2.2uF ELEC
4
31@100MHz AGND R6 6.8K
47K
3 2 1
L2 CD_COM + AGND R8 6.8K C21 + 2.2uF ELEC
DS483RD2SA1
R7 100 C18 4.7uF ELEC R9 47K
31@100MHz
Connect CGND to AGND at the jack
R10 6.8K
C19 100pF NPO
C20 100pF NPO
LINE_IN_L
AGND
L3 + CD_IN_L AGND CGND
R11
100
C22
2.2uF ELEC
31@100MHz R12 47K AGND
VIDEO IN
R13 J3
4
MIC IN
+5VA 6.8K + VIDEO_IN_R R17 100 C24 1uF Y5V C23 R14 2.2K R15 1.5K 2.2uF ELEC
L4
J4 R16 6.8K
31@100MHz AGND
4 3 2
5 2 1
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 AGND
R19
6.8K
AGND CGND
AGND
AGND
AGND
AUX IN
R20 + AUX_IN_R J6 31@100MHz
2 1
PC SPEAKER IN
6.8K C30 L7 R21 47K C31 2.2uF ELEC 0.1uF X7R PC_BEEP
L6
J5 R22 6.8K
31@100MHz AGND
4 3 2 1
R23 4.7K
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 AGND
R25
6.8K
AGND
INTERNAL MODEM CONNECTION
R26 PHONE_IN + 6.8K C34 2.2uF ELEC
L9
J7 R27 6.8K
4 3
31@100MHz AGND
2
1
L10 +
R28
0
C35
2.2uF ELEC
MONO_OUT
31@100MHz 47K
R29
AGND
AGND
CRD4201-2S
Figure 3. Analog Inputs
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
CNT/LFE JACK (C/SUB OUT)
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
U3 C43 NO POP
NO POP R36 NO POP
4
J9
C44
NO POP
R37
NO POP
2 1
SPDIF/SDO2 SCLK LRCLK ABITCLK
NO POP R38 NO POP R39 NO POP R40 NO POP R41 NO POP C45 NO POP C46 NO POP
Connect CGND to AGND at the jack
AGND
AGND
AGND
CGND
AGND
CRD4201-2S
DS483RD2SA1
Figure 4. Center Channel and Sub-Woofer Outputs
1
+
+
Vcc
LINE_OUT_L MC34072D AGND C53 AGND 22pF NPO
-
Vee
+
HP_OUT_L C56 NO POP
+
+
DS483RD2SA1
SURROUND OUT JACK
U4A
3
(REAR OUT)
C48
4
VREFOUT
2
+ MC34072D C49 10uF ELEC
10uF ELEC
J10
2 1
C47 +5VA 27K R44 220K R45 220K C50 100pF NPO R42 33K
22pF NPO
PHONO-1/8
R43
LINE_OUT_R
Connect CGND to AGND at the jack
C51 100pF NPO
U4B
5
R47
6
27K
+
7
C52 0.1uF X7R
CGND
AGND
R46
33K
C54
NO POP
4
J11
HP_OUT_R C55 NO POP
2 1
HP_OUT_C
NO POP
R48 NO POP
R49 NO POP
C57 NO POP
C58 NO POP
Connect CGND to AGND at the jack
AGND
CGND
AGND
CRD4201-2S
Figure 5. Rear Channel Outputs
11
CRD4201-2S
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
12
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+3.3VD P1
B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 +5VD USBGND A11 USB+ +12V A10 GND GND A9 USB_OC# -12V A8 +5Vdual/+5Vsb PRIMARY_DN# A7 GND RSVD(5) A6 RSVD(3) RSVD(4) A5 RSVD(2) MONO_OUT/PC_BEEP A4 RSVD(1) AGND A3 MONO_PHONE AUDIO_MUTE# A2 AUDIO_PWRDN A1
GND
2
DS483RD2SA1
C60 0.1uF X7R + C61 10uF ELEC
PRIM_DN#
+5VD
+12VD
populate only one resistor
R51 0 SPDIF/SDO2 SPDIF_TX +5VD DGND
B12 B13 B14 B15 B16 B17 B18 B19 B20 RESET# SDATA_IN3 GND A21 SDATA_IN2 GND MSTRCLK SCL SDA A24 BITCLK A22 A23 SDATA_IN0 GND GND A19 A20 GND SDATA_IN1 SDATA_OUT A18 SYNC +3.3VD GND A16 A17 +3.3Vdual/+3.3Vsb GND RSVD(7) A15 GND GND RSVD(6) A13 A14 GND S/PDIF_IN
A12
R52
NO POP
+3.3VD
ASDOUT ARST# ASYNC R53 R54 NO POP 47
+3.3VD
C62 0.1uF X7R
+ C63 10uF ELEC
B21 B22 B23 B24
ASDIN ABITCLK DGND
ACR Connector DGND DGND
populate R54 for primary codec populate R53 for secondary codec
R55 4.7K
R56 4.7K
+3.3VD
+3.3VD U5
1 2 3 4 3 NC1 NC2 NC3 Vss Vcc WP SCL SDA 8 7 6 5
R57 NO POP
+12VD U6
+5VA
SCL SDA
R58 0 24LC09
1 IN OUT
C64 0.1uF X7R
DGND
C65 0.1uF X7R MC78M05C
+ C66 10uF ELEC
+ C67 10uF ELEC
EEPROM address "0xB0"
DGND DGND
DGND
AGND
Connect AGND to DGND with a 50 mil trace near the regulator.
Connect CGND to DGND with a 50 mil trace near the finger
edge of the board.
CRD4201-2S
Figure 7. ACR Connector
13
CRD4201-2S
Figure 8. PCB Layout: Top Assembly Drawing
14
DS483RD2SA1
CRD4201-2S
Figure 9. PCB Layout: Top Layer
DS483RD2SA1
15
CRD4201-2S
Figure 10. PCB Layout: Bottom Layer
16
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CRD4201-2S
(
Figure 11. PCB Layout: Drill Drawing
DS483RD2SA1
17
CRD4201-2S
Figure 12. PCB Layout: Top Silkscreen
18
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5. BILL OF MATERIALS
DS483RD2SA1
Manufacturer Part Number Description KEMET C0805C104K5RAC CAP, 0805, X7R, .1uF, 10%, 50V KEMET KEMET KEMET NO POP NO POP NO POP C0805C103K5RAC CAP, 0805, X7R, .01uF, 10%, 50V C0805C102K5GAC CAP, 0805, C0G, 1000pF, 10%, 50V C1206C225M8VAC CAP, 1206, Y5V, 2.2uF, 20%, 10V PANASONIC ECE-V1VS2R2SR CAP, SMT A, ELEC, 2.2uF, 20%, 35V PANASONIC KEMET KEMET PANASONIC ECE-V1CA100R C0805C105M8VAC C0805C101J5GAC ECE-V1ES4R7SR CAP, SMT A, ELEC, 4.7uF, 20%, 25V CAP, 0805, C0G, 100pF, 5%, 50V CAP, 0805, Y5V, 1uF, 20%, 10V CAP, SMT B, ELEC, 10uF, 20%, 16V KEMET NO POP KEMET NO POP LZR ELECTRONICS MOLEX C0805C272K5RAC NO POP C0805C220K5GAC NO POP SJ372 CAP, 0805, X7R, 2700pF, 10%, 50V NO POP CAP, 0805, C0G, 22pF, 10%, 50V NO POP CONN, 1/8" DOUBLE SW. STEREO PHONE JACK 70553-0003 HDR, 4X1, 0.025" PIN, 0.1" CTR, 15u" AU
Item
Quantity
Reference
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
7
C14,C15,C29,C45,C46,C57,
C58
6
10
C16,C17,C21,C22,C23,C25,
C30,C33,C34,C35
7
1
C18
8
6
C19,C20,C26,C27,C50,C51
9
1
C24
10
10
C28,C36,C37,C40,C48,C49,
C61,C63,C66,C67
11
3
C32,C38,C39
12
3
C43,C44,C56
13
2
C53,C47
14
2
C54,C55
15
1
J1
CRD4201-2S
16
4
J2,J4,J5,J7
19
20
LZR ELECTRONICS NO POP LZR ELECTRONICS NO POP TOSHIBA TDK HF50ACB321611-T IND, FBEAD, 1206, 31@100MHz, 25% TOTX173 CONN, OPTICAL TOSLINK TRANSMITTER NO POP NO POP SJ373 CONN, 1/8" NON-SW. STEREO PHONE JACK NO POP NO POP SJ374 CONN, 1/8" SINGLE SW. STEREO PHONE JACK TDK NONE EDGE CONNECTOR 9C08052A0R00J 9C08052A47R0J 9C08052A1000J 9C08052A6801F ACR BUS CONNECTOR HF50ACB321611-T NO POP PHILIPS PHILIPS PHILIPS PHILIPS RES, SO, 0805, 0, 5%, 1/10W, METAL FILM RES, SO, 0805, 47, 5%, 1/10W, METAL FILM RES, SO, 0805, 100, 5%, 1/10W, METAL FILM RES, SO, 0805, 6.8K, 1%, 1/10W, METAL FILM PHILIPS 9C08052A4702J RES, SO, 0805, 47K, 5%, 1/10W, METAL FILM PHILIPS PHILIPS PHILIPS PHILIPS PHILIPS NO POP 9C08052A2201J 9C08052A1501J 9C08052A4701J 9C08052A5600J 9C08052A2703J NO POP 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, 560, 5%, 1/10W, METAL FILM RES, SO, 0805, 270K, 5%, 1/10W, METAL FILM NO POP
17
1
J3
18
1
J6
19
2
J8,J10
20
2
J9,J11
21
1
J12
22
9
L1,L2,L3,L4,L5,L6,L8,L9,
L10
23
1
L7
24
1
P1
25
4
R1,R28,R51,R58
26
2
R2,R53
27
4
R3,R7,R11,R17
28
14
R4,R6,R8,R10,R13,R16,R18,
R19,R20,R22,R24,R25,R26,
R27
29
7
R5,R9,R12,R21,R29,R34,
R35
30
1
R14
31
1
R15
32
3
R23,R55,R56
33
2
R30,R31
34
2
R33,R32
35
10
R36,R37,R38,R39,R40,R41,
CRD4201-2S
DS483RD2SA1
R48,R49,R52,R57
36 PHILIPS PHILIPS PHILIPS NO POP CIRRUS LOGIC CS4201-JQ IC, TQFP, AC '97 2.1 SERIAL CODEC W/ HP AMP + SRC IC, SO, SOIC8, DAC, STEREO NO POP IC, SO, SOIC8, 34072, SINGLE SUPPLY DUAL OP AMP IC, SO, SOIC8, SERIAL EEPROM, 4 x 256 x 8 IC, SO, +5V REGULATOR, DPAK, 4%, 500mA NO POP NO POP NO POP 9C08052A8201J RES, SO, 0805, 8.2K, 5%, 1/10W, METAL FILM 9C08052A2203J RES, SO, 0805, 220K, 5%, 1/10W, METAL FILM 9C08052A2702F RES, SO, 0805, 27K, 1%, 1/10W, METAL FILM
2
R42,R46
PHILIPS
9C08052A3302F
RES, SO, 0805, 33K, 1%, 1/10W, METAL FILM
37
2
R43,R47
38
2
R45,R44
DS483RD2SA1
CIRRUS LOGIC NO POP MOTOROLA MC34072D NO POP CS4334-KS Microchip MOTOROLA NO POP NO POP MC78M05CDT 24LC09-I/SN
39
1
R50
40
1
R54
41
1
U1
42
1
U2
43
1
U3
44
1
U4
45
1
U5
46
1
U6
47
1
Y1
CRD4201-2S
21

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