Read Sony CMT-DF1 / HCD-DF1 Service Manual online
30
HCD-DF1
•
IC Pin Function Description
MAIN BOARD U1 3P70F4XZZ-S094 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
VSS
-
Ground terminal
2
XOUT
O
System clock output terminal (4.19 MHz)
3
XIN
I
System clock input terminal (4.19 MHz)
4
TEST
I
Test signal input terminal Not used
5
REMOTE
I
SIRCS signal input from the remote control receiver
6
DVD_STB
/TU_DO
I
Strobe signal input from the DVD block
Serial data input from the tuner (FM/AM)
Serial data input from the tuner (FM/AM)
7
RESET
I
System reset signal input terminal "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
8
NC
-
Not used
9
DVD_CLK
/TU_CLK
I/O
Strobe signal input from the DVD block
Serial data transfer clock signal output to the tuner (FM/AM)
Serial data transfer clock signal output to the tuner (FM/AM)
10
DVD_IR/TU_DI
I/O
Interrupt request signal input from the DVD block
Serial data output to the tuner (FM/AM)
Serial data output to the tuner (FM/AM)
11
DVD_DATA
/TU_CE
I/O
Serial data input from the DVD block
Chip enable signal output to the tuner (FM/AM)
Chip enable signal output to the tuner (FM/AM)
12
PROTECT
I
Protect signal input terminal
13 to 15
KEY_IN0 to
KEY_IN2
I
Front panel key input terminal (A/D input)
16
KEY_OUT
I
Wake up signal input terminal
17
OPTION_IN
O
System clock signal output to the liquid crystal display
18
BU9728_CLK
O
Serial data transfer clock signal output to the liquid crystal display
19
NC
-
Not used
20
BU9728_CE
O
Chip enable signal output to the liquid crystal display
21
BU9728_DATA
O
Serial data output to the liquid crystal display
22
BU9728_C/D_STB
O
Command strobe signal output to the liquid crystal display
23
MUTE
O
Muting on/off control signal output terminal "L": muting on
24
TU_VCC_CTRL
O
Power on/off control signal output terminal "L": power on
25
POWER_CTRL
O
Power on/off control signal output terminal for main power "L": power on
26
24C01_CLK
/7314_CLK
I
Serial data transfer clock signal output to the electrical volume and EEPROM
27
24C01_DATA
/7314_DATA
I/O
Serial data output to the electrical volume
Two-way data bus with the EEPROM
Two-way data bus with the EEPROM
28
DVD_VCC_CTRL
O
Power on/off control signal output terminal for DVD block "H": power on
29
OP/CL
I
DVD lid open/close detection signal input terminal "L": DVD lid is closed
30
STAND_BY
O
LED drive signal output terminal for STANDBY indicator "H": LED on
31
OUT2
O
Fan motor drive signal output terminal Not used
32
VDD
-
Power supply terminal (+3.3V)
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