Sony CDX-GT25MPW Service Manual page 26

CDX-GT25MPW/GT30MP/GT250MP/GT257ME/GT300MP/GT303MP
• IC Pin Function Description
MAIN BOARD (2/3) IC401 R5F3650KBDZ98FA (SYSTEM CONTROL)
Pin No. Pin Name
1 LCD_SO
2 LCD_CLK
3 NOSE_SW
4 SIRCS
5 UNISO
6 UNISI
7 UNISCK
8 BYTE
9 CNVSS
10 XIN
11 XOUT
12 RESET
13 OSCOUT
14 VSS
15 OSCIN
16 VCC1
17 NMI
18 RC_IN1
19 BUIN
20 SYSRST
21 BUSON
22 DEC_SI
23 DEC_SCK
24 DEC_SO
25 to 27 NCO
28 BEEP
29 I2C_SCK
30 I2C_SIO
31 FW_TXD
32 FW_RXD
33 FW_CLK
34 FW_BUSY
35 BT_API_TX
36 BT_API_RX
37 DRV_ON
38 MEC_LOAD
39 MEC_EJECT
40 CDON_1500MV
41 EPM
42 MEC_INSW
43 MEC_LIMIT
44 MEC_DSW
45 DEC_INT
46 CE
47, 48 NCO
49 DEC_XMUTE
50 NCO
51 CD_ZDET
52 CD_XCCE
53 DEC_SSTBY
54 DEC_RST
55 BT_ATT_XEN
56 TELATT
57 ACC_IN
58 ATT
59 DIAG
26
I/O
O Serial data signal output to LCD driver
O Serial clock signal output to LCD driver
I Front-panel detach/attach detect signal input/output"L":with Panel,"H":without Panel
I Remote-control signal (infrared) input
O SONY-BUS data output
I SONY-BUS data input
O SONY-BUS clock output
I MCU setting terminal
I Input pin to switch U-com mode
I Low-speed clock input (32.768kHz)
O Low-speed clock output (32.768kHz)
I U-com reset signal input
O High-speed clock output (11.06MHz)
— Ground pin
I High-speed clock input (11.06MHz)
— Power supply pin (+3.3 V)
I MCU setting terminal
I Rotary commander SHIFT key signal input
I Backup power detect signal input
O SYSTEM RESET signal output
O VBUS power control signal output
I Decoder data signal input
O Decoder clock signal output
O Decoder data signal output
O Not used. (Open)
O BEEP signal output to power amplifi er
O IIC bus serial clock output
I/O IIC bus serial data input/output
O Flash software (Serial data output) /System monitor signal output
I Flash software (Serial data input)
I Serial clock input for synchronous writing
O Busy signal output for synchronous fl ashing
O Not used. (Open)
O Not used. (Open)
O Driver control signal output
O CD mechadeck moter (Load) signal output
O CD mechadeck moter (Eject) signal output
O Servo power control signal output
O EPM signal output
I Mechadeck in_switch signal input
I Mechadeck (OP) limit_switch signal input
I Mechadeck D_switch signal input
I Decoder request signal input
O Chip enable signal output
O Not used. (Open)
O Decoder mute signal output
O Not used. (Open)
I CD zero detect signal input
O CD servo/decoder chip enable signal output
O Decoder SRAM Standby signal output
O Decoder Reset signal output
O CD mute signal output
I TELEPHON ATT detect signal input
I Accessory power detect signal input
O Audio mute control signal output
I POWER amplifi er status signal input
Description
Not used.(Open)
Not used.(Open)
Not used.(Open)