Sony ZS-X3CP Service Manual page 35

• CONTROL BOARD IC801 µPD784216AGF519-3BA (SYSTEM CONTROLLER)
Pin No. Pin Name
1 TU-CE
2 TU-DATA
3 TU-CLK
4 TU-COUNT
5 TU-MUTE
6 SIMUKE1
7 SIMUKE2
8 TEST-B
9 VDD
10 TEST-A
11 EPROM-SCL
12 EPROM-SDA
13 to18 N.C
19 LCD-RESET
20 LCD-RS
21 LCD-E
22 TEST/VPP
23 N.C
24 VM-CONT
25 CD-ON
26 LOAD
27 TU-ON
28 MP3-LED
29 to 36 DB0 to DB7
37 VDD
38 X2
39 X1
40 VSS
41 XT2
42 XT1
43 RESET
44 FM/AM-SHIFT
45 N.C
46 PWR-KEY
47 CD-DOOR
48 N.C
49 MP3-INTB
50 CD-WRQ
51 AVDD
52 AVREF0
53 KEY2
54 KEY1
55 VH
56 REG-CHK
57 VM
I/O Description
O PLL chip enable signal output terminal
O
PLL serial data output terminal
O
PLL serial data transfer clock signal output terminal
I
PLL serial count data input terminal
O Tuner muting on/off control signal output terminal "L": active
I Destination setting terminall Fixed at "L" in this set
I Destination setting terminall Fixed at "L" in this set
O Not used
— Power supply terminal (+3.2V)
I CD automatic adjustment value check mode setting terminal Normally fixed at "H"
O
Serial clock signal output terminal to the EEPROM
I/O
Two-way serial data bus with the EEPROM
O Not used
O LCD system reset signal output terminal "L": reset
O LCD drive signal output terminal
O LCD drive signal output terminal
I Not used
O Not used
O Middle voltage (+4.5V) detection signal output for battery check
O CD power on/off control signal output terminal "L": CD on
O Load control signal output for battery level check
O Tuner power on/off control signal output terminal "L": tuner on
O MP3 LED drive signal output terminal "L": active
O LCD drive signal output terminal
— Power supply terminal (+3.2V)
O System clock output terminal (5MHz)
I System clock input terminal (5MHz)
—
Ground terminal
O Not used
I Not used
I
System reset signal input terminal "L": reset
O Shift point terminal for oscillation frequency change
O Not used
I POWER key input terminal
I CD lid open/close detection switch input terminal "L": CD lid is close
O Not used
I Interrupt request signal input terminal "L": active
I CD interruption signal input terminal
—
Ground terminal
— Not used
I Key input terminal (A/D input)
I Key input terminal (A/D input)
I High voltage (+9V) detection signal input for battery check
I REG-CHK detection signal input terminal
I Middle voltage (+4.5V) detection input for battery check
"L": POWER key on
ZS-X3CP
35