12-4
A7121PIN
IC852 (Input Select)
IC901 (+1.2V Regulator)
IC904 (+1.8V Regulator)
IC905 (+5V Regulator)
IC906 (+3.3V Regulator)
22 SIF REF SIF Reference
23 STEREO REF Stereo Reference
24 SDA Serial Data
25 GND GND
26 NU Not Used
27 SCL Serial Clock
28 AGC DET Auto Gain Control Detect
29
R CH AUDIO
OUT
Right Channel Audio Output
30
L CH AUDIO
OUT
Left Channel Audio Output
31 NU Not Used
32 L-R REF L-R Reference
Pin
No.
Signal Name Function
1 0Y Audio Signal 0 Input (R ch)
2 2Y Audio Signal 2 Input (R ch)
3 Y-COM Audio Signal Output (R ch)
4 3Y Audio Signal 3 Input (R ch)
5 1Y Audio Signal 1 Input (R ch)
6 INH Input Select Signal
7VEE GND
8GND GND
9 B Input Select B Signal
10 A Input Select A Signal
11 3X Audio Signal 3 Input (L ch)
12 0X Audio Signal 0 Input (L ch)
13 X-COM Audio Signal Output (L ch)
14 1X Audio Signal 1 Input (L ch)
15 2X Audio Signal 2 Input (L ch)
16 VDD VDD
Pin
No.
Signal Name Function
1GND GND
2 V IN Input Voltage
3 V OUT Output Voltage
Pin
No.
Signal Name Function
1 V IN Input Voltage
Pin
No.
Signal Name Function
2 V OUT Output Voltage
3GND GND
4 V ADJ Control Output Voltage
Pin
No.
Signal Name Function
1 V IN Input Voltage
2 V OUT Output Voltage
3GND GND
Pin
No.
Signal Name Function
1 V IN Input Voltage
2 V OUT Output Voltage
3GND GND
4 V ADJ Output Adjustment Pin Voltage
Pin
No.
Signal Name Function