Sony Walkman NWZ-A726 Service Manual page 33

• IC Pin Function Description
MAIN BOARD IC302 CS43L21-CNZR (A/D CONVERTER, D/A CONVERTER, HEADPHONE AMP)
Pin No. Pin Name
1 LRCK
2 SDA/CDIN
3 SCL/CCLK
4 AD0/nCS
5 VA_HP
6 FLYP
7 GND_HP
8 FLYN
9 VSS_HP
10 AOUTB
11 AOUTA
12 VA
13 AGND
14 DAC_FILT+
15 VQ
16 ADC_FILT+
17 MICIN1/AIN3A
18 MICIN2/AIN3B/BIAS
19 AIN2A
20 AIN2B/BIAS
21, 22 AFILTA, AFILTB
23 AIN1A
24 AIN1B
25 nRESET
26 VL
27 VD
28 DGND
29 SDOUT
30 MCLK
31 SCLK
32 SDIN
33 AGND
I/O
O L/R sampling clock signal output to the system controller
I Serial data input from the system controller
I Serial data transfer clock signal input from the system controller
I Chip select signal input from the system controller
- Power supply terminal (+1.8V)
I External charge pump capacitor (positive node) connection terminal
- Ground terminal
I External charge pump capacitor (negative node) connection terminal
O Negative voltage from charge pump output terminal
O Analog audio (R-ch) signal output to the headphone and WM-PORT connector
O Analog audio (L-ch) signal output to the headphone and WM-PORT connector
- Power supply terminal (+1.8V)
- Ground terminal
O Positive reference voltage output terminal
O Quiescent voltage output terminal
O Positive reference voltage output terminal
I Microphone signal input terminal
I Microphone signal input terminal
I Analog audio (L-ch) signal input terminal
I Analog audio (R-ch) signal input terminal
O Filter connection terminal
I Analog audio (L-ch) signal input terminal
I Analog audio (R-ch) signal input terminal
I Reset signal input from the system controller
- Power supply terminal (+2.9V)
- Power supply terminal (+1.8V)
- Ground terminal
O Serial audio data output to the system controller
I Master clock signal input from the system controller
O Bit clock signal output to the system controller
I Serial audio data input from the system controller
- Ground terminal
NWZ-A726/A726B/A728/A728B/A729
Description
Not used
Not used
Not used
Not used
Not used
Not used
Not used
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