Sony CDX-GT31MP - Page 31

CDX-GT31MP/GT260MP/GT267ME/GT310MP/GT313MP
31
• IC Pin Function Description
MAIN BOARD (2/3) IC501 R5F3650KBDZ88FA (SYSTEM CONTROL)
Pin No. Pin Name I/O Description
1 LCD_SO O Serial data output for LCD driver
2 LCD_CLK O Serial clock signal output for LCD driver
3
NOSE_SW I Front panel detach/attach detect signal input “L”: With panel, “H”: Without panel
4 SIRCS I Remote control signal (infrared) input
5 NCO O Not used. (Open)
6 NCO O Not used. (Fixed at L.)
7 NCO O Not used. (Open)
8 BYTE I External data bus width select signal input (Connect to VSS in this set)
9 CNVSS I Flash writer IF (CNVSS) signal input (L: normally operation, H: fl ash write)
10 XIN I Low speed operation clock signal input (32.768 kHz)
11 XOUT O Low speed operation clock signal output (32.768 kHz)
12
RESET I System reset signal input
13 OSCOUT O High speed operation clock signal output (7.92 MHz)
14 VSS ― Ground terminal
15 OSCIN I High speed operation clock signal input (7.92 MHz)
16 VCC1 ― Power supply terminal (+3.3 V)
17
NMI I Non-maskable interrupt signal input (Fixed at H in this set)
18
RC_IN1 I Rotary commander shift key signal input
19 BUIN I Backup power supply detect signal input
20, 21 NCO O Not used. (Open)
22 DEC_SI I Decorder data signal input
23 DEC_SCK O Decorder clock signal output
24 DEC_SO O Decorder data signal output
25, 26 NCO O Not used. (Open)
27 DRV_ON O Driver control signal output
28 BEEP O Beep signal output for the power amplifi er IC
29 I2C_SCL O IIC communication serial clock signal output
30 I2C_SDA I/O IIC communication serial data input/output
31 FW_TXD O Flash software serial data output/System monitor output
32 FW_RXD I Flash software serial data input
33 FW_CLK I Flash software serial clock input for synchronous writing
34 FW_BUSY O Flash software busy signal output for synchronous fl ashing
35 to 37 NCO O Not used. (Open)
38 MEC_LOAD O CD mechanism deck motor loading signal output
39 MEC_EJECT O CD mechanism deck motor eject signal output
40 CDON_1500MV O Servo power supply control signal output
41 EPM O EPM signal output (Fixed at L in this set)
42
MEC_INSW I Mechanism deck pack in detection switch signal input
43
MEC_LIMIT I Mechanism deck sled limit in detection switch signal input
44
MEC_DSW I Mechanism deck chacking end detection switch signal input
45 DEC_INT I Decoder request signal input
46 CE I Clip enable signal input (Fixed at H in this set)
47 HIT2_SDA I/O Tuner serial data input/output
48 HIT2_SCL O Tuner serial clock output
49
HIT2_RESET O Tuner reset signal output
50 DEC_XMUTE O Decorder mute signal output
51 CD_ZDET I Zero detect signal input
52 CD_XCCE O Servo/decorder clip enable signal output
53 DEC_SSTBY O Decorder SRAM standby signal output
54 DEC_RST O Decorder reset signal output
55, 56 NCO O Not used. (Open)
57
ACC_IN I Accessory power supply detect signal input
58 ATT O Audio mute control signal output
59 DIAG I Status signal input from power amp IC
60 AMPSTB O Standby signal output for power regulator IC
61 NCO I Not used. (Open)