Sony HCD-S300 Service Manual page 57

• IC903 I/F MICROCOMPUTER (M30622MA-A33FP) (DVD Board)
Pin No. Pin Name
1 IFSIO
2 IFSCO
3 YSSCSB
4 YSS_CS
5 YSS_CI
6 YSS_SO
7 YSSCK
8 (GND)
9 CNVSS
10 YSSIC
11 AN/DIG
12 RESET
13 XOUT
14 VSS
15 XIN
16 VCC
17 NMI
18 STOP
19 ASEL1
20 ASEL2
21 AUMUTE
22 VMUTE
23 ASEL1
24 VSEL2
25 D1/P1
26 D2/P2
27 P3
28 P4
29 NO USE
30 TSTPORT
31 TXD1
32 RXD1
33 CLK1
34 RTS1
35 FLDATA
36 FLINH
37 FLCLK
38 FL_CS
39 STBY
40 REAR-SW
41 HOLD
42 SIRCS
43 F_RLT
44 POWRY
45 SWMODE/SLEEP
46 WR
47 TUNCLK
48 TUNCE
49 TUNSTE
50 FM750N
I/O
O Data output for SYS COM
I Clock input for SYS COM
O Chip select for SUB DSP (YSS912)
O Chip select for MIN DSP (YSS912)
O Data output for DSP (YSS912)
I Data input for DSP (YSS912)
O Clock for DSP (YSS912)
– Ground
– CNVSS
O Reset for DSP (YSS912)
O Analog/Digital
– Reset
– 16 MHz
– Ground
– 16 MHz
– +5 V
I Not used
I STOP input
O Analog select
O Analog select
O Audio mute
O Video mute
O Video select
O Video select
O Dimmer
O Dimmer
I Not used
I Not used
I Not used
I Test port
O For flash write
O For flash write
O For flash write
O For flash write
O Data output for IC100 (LC75824)
O Indicator lamp terminal for IC100 (LC75824)
O Clock for IC100 (LC75824)
O Chip select for IC100 (LC75824)
O Standby LED
O Rear switch
O For flash write
I SIRCS
O Full relay
O Power relay
O Sleep for digital amplifier
O For flash write
O Clock for LC72137
O Chip enable for LC72137
I Stero detection for LC72137
O AM/FM switch for LC72137
Function
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