Sony Ericsson NWZ-A826K, NWZ-A829, NWZ-A828K service manual IC Pin Function Description

Page 34

NWZ-A826/A826K/A828/A828K/A829

• IC Pin Function Description

MAIN BOARD IC302 CS43L21-CNZR (A/D CONVERTER, D/A CONVERTER, HEADPHONE AMP)

Pin No.

Pin Name

I/O

 

Description

1

LRCK

O

L/R sampling clock signal output to the system controller

2

SDA/CDIN

I

Serial data input from the system controller

 

3

SCL/CCLK

I

Serial data transfer clock signal input from the system controller

4

AD0/nCS

I

Chip select signal input from the system controller

5

VA_HP

-

Power supply terminal (+1.8V)

 

 

6

FLYP

I

External charge pump capacitor (positive node) connection terminal

7

GND_HP

-

Ground terminal

 

 

8

FLYN

I

External charge pump capacitor (negative node) connection terminal

9

VSS_HP

O

Negative voltage from charge pump output terminal

10

AOUTB

O

Analog audio (R-ch) signal output to the headphone and WM-PORT connector

11

AOUTA

O

Analog audio (L-ch) signal output to the headphone and WM-PORT connector

12

VA

-

Power supply terminal (+1.8V)

 

 

13

AGND

-

Ground terminal

 

 

14

DAC_FILT+

O

Positive reference voltage output terminal

 

15

VQ

O

Quiescent voltage output terminal

 

 

16

ADC_FILT+

O

Positive reference voltage output terminal

 

17

MICIN1/AIN3A

I

Microphone signal input terminal

Not used

18

MICIN2/AIN3B/BIAS

I

Microphone signal input terminal

Not used

19

AIN2A

I

Analog audio (L-ch) signal input terminal

Not used

20

AIN2B/BIAS

I

Analog audio (R-ch) signal input terminal

Not used

21, 22

AFILTA, AFILTB

O

Filter connection terminal Not used

 

23

AIN1A

I

Analog audio (L-ch) signal input terminal

Not used

24

AIN1B

I

Analog audio (R-ch) signal input terminal

Not used

25

nRESET

I

Reset signal input from the system controller

26

VL

-

Power supply terminal (+2.9V)

 

 

27

VD

-

Power supply terminal (+1.8V)

 

 

28

DGND

-

Ground terminal

 

 

29

SDOUT

O

Serial audio data output to the system controller

30

MCLK

I

Master clock signal input from the system controller

31

SCLK

O

Bit clock signal output to the system controller

32

SDIN

I

Serial audio data input from the system controller

33

AGND

-

Ground terminal

 

 

34

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Contents NWZ-A826/A826K/A828/A828K/A829 889-048-01NWZ-A826/A826K/A828/A828K/A829 Flexible Circuit Board Repairing DisassemblyDiagrams Section Servicing NotesNWZ-A826K AEP, UKNWZ-A828K Section GeneralDisassembly Flow Section DisassemblyCover REAR, Rear Assy Battery Main BoardLCD Assy Power supply voltage check Section Test ModeOperation of the Test Mode 4-1. Power Charge current check Battery voltage detection checkStandby current check AudioOutput check Frequency characteristic 1 checkFrequency characteristic 2 check 2. S/N checkMaximum output check CH separation L-ch checkCH separation R-ch check Normalizer checkLCD display check Liquid crystal display is checked Sound pressure regulation level checkVideo OtherKey check Destination settingSound pressure regulation setting Frequency check that presses keyBASS-Gain/Fc setting Clear stereo setting With cableClear stereo setting No cable TREBLE-Gain/Fc settingBluetooth connection check Bluetooth address setting Bluetooth address is setShutdown Section Diagrams Block Diagram PANEL, Power Supply Section Side a For Printed Wiring BoardsFor Schematic Diagrams Side BPrinted Wiring Board Main Board Side a Uses unleaded solder Semiconductor LocationPrinted Wiring Board Main Board Side B Uses unleaded solder 123 Main Board 1/7 IC701 123 Main Board 3/7 See page 32 for IC Block Diagrams BoardMain Board Main Board 6/7 Main Board 7/7 SW Board Side a SW Board Side B Uses unleaded solder123 SW Board 1/2 SW Board 2/2 IC Block Diagrams Main Board IC301 XC6401FF58DRMAX8671CETL+TG069 SW BoardIC Pin Function Description GND NandwezIOB VccvbusNANDDA2 NANDRBZ0Nandale VDDL1NANDRBZ1 LcdenableUsbsuspd BtxrstLCDB0 ResetzNANDCEZ0 LCDG4, LCDG5Wakeup VloginSdrcasz PsmlodetSdrclk TustoSDRA0 TM2AD6 AD4 XholdkeyAD5 Keywake AD7 SPI0CSZ2DD1GNDA DD1INB1, DD1INB2DD1VFBK2 VGP1Section Exploded Views Cover Rear SectionRear Assy Section 106 1-756-702-11 BATTERY, Lithium ION Storage Main Board SectionFront Section Section Electrical Parts List MainLED SMLA13BDTT86ST Bluetooth CONNECTOR, FFC/FPC ZIF 11PMULTIPLE, Connector Ceramic Chip 5PFTransistor InductorCOIL,COMMONMODECHOKE SMD1210 Transistor EMX18SWITCH, Slide Hold Terminal Short Chip SwitchSWITCH, Tactil Reset TERMINAL, ContactBattery Assy US, CND, AEP, UK, FR, EE CONNECTOR, FFC/FPC ZIF 39PINBATTERY, Lithium ION Storage VaristorNWZ-A828K AEP AccessoriesMANUAL, Instruction English NWZ-A826K AEP/NWZ-A828K AEPMemo Revision History Ver Date Description of Revision
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