Sony CDP-XA50ES - SERVO BOARD IC201 CXP84124-068 Q Pin Functions

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Pin No. Pin Name I/O Function
1A3O
2A4O
3A5O
4A6O
5A7O
6A8O
7A9O
8 A10 O
9 A11 O
10 A12 O
11
WE O Write enable signal output to the static RAM (IC202)
12
NC O Not used (open)
13 NC O Not used (open)
14 LED-PLAY O ( LED (D871) drive signal output terminal “H”: LED on
15 LED-PAUSE O
P LED (D872) drive signal output terminal “H”: LED on
16 LED-FILTER O FILTER LED (D873) drive signal output terminal “H”: LED on
17 SPDL-MUTE O Mute signal output to the spindle motor driver (IC104, 105)
18 SHIFT-ON/OFF O
Reset signal output to the CXD2562Q-CS (IC603) “L”: reset
19 VOL UP O Volume up control signal output to the volume control motor driver (IC350)
20 VOL DOWN O Volume down control signal output to the volume control motor driver (IC350)
21
BLANK O Blank signal output to the fluorescent indicator tube driver (IC801 to IC803)
22
FL D0 O Serial data output to the fluorescent indicator tube driver (IC803)
23
FL D1 O Serial data output to the fluorescent indicator tube driver (IC802)
24
FL D2 O Serial data output to the fluorescent indicator tube driver (IC801)
25
FL CLK O
Serial data transfer clock signal output to the fluorescent indicator tube driver (IC801 to
IC803)
26
FL WR O Read/write select signal output to the fluorescent indicator tube driver (IC801 to IC803)
27 SENSER SW O
On/off control signal output to the stabilizer detect sensor (IC261) “H”: on
28 SENSER I Detect signal input from the stabilizer detect sensor (IC261) “H”: on
29
LIMIT OUT I
Detection input from the sled limit-out detect switch (S21)
The optical pick-up is outer position when “L”
30
RESET I
System reset signal input from the reset signal generator (IC91) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
31
XTALI I Main system clock input terminal (4 MHz)
32
XTALO O Main system clock output terminal (4 MHz)
33
VSS — Ground terminal
34
TX O Sub system clock output terminal Not used (open)
35
TEX I Sub system clock input terminal Not used (fixed at “L”)
36
AVSS — Ground terminal (for A/D converter)
37
AVREF I Reference voltage input terminal (+5V)
38
K0 I Key input terminal (A/D input) ERASE key (S850) input
39
K1 I
Key input terminal (A/D input)
FILE, EDIT/TIME FADE, TIME, REPEAT, P MODE keys (S851 to S855) input
40 K2 I
Key input terminal (A/D input)
CHECK, CLEAR, FILTER, 0, ) , PUSH ENTER keys (S884 to S888, RV870) input
SERVO BOARD IC201 CXP84124-068Q (SYSTEM CONTROLLER)
Address signal output to the static RAM (IC202)