Ic Pin Function Description - Sony MDS-SE9 Service Manual

7-15. IC PIN FUNCTION DESCRIPTION

• IC151 M38514M6-C12FP SYSTEM CONTROLLER (MAIN Board)
Pin No. Pin Name
1 VCC
2 VREF
3 AVSS
4 4052A
5 4052B
6 P.DOWN
7 P41
8 PDOWN-OUT
9 SRDY1
10 SCLK1
11 TXD
12 RXD
13 I2C-CLK
14 I2C-DATA
15 CNVSS
16 BIAS
17 +MTR
18 RESET
19 XIN
20 XOUT
21 VSS
22 TP151
23 REC LED
24 PAUSE LED
25 FWD LED
26 REV LED
27 TC-RELAY
28 PLAY SW
29 +SOL
30 TP152
31 REC MUTE
32 TC-MUTE
33 ALC
34 LOAD IN SW
35 LOAD OUT SW
36 LOAD IN
37 LOAD OUT
38 END SW
39 B-HALF
40 KEY2
41 KEY1
42 KEY0
I/O
– Power supply terminal
– Reference voltage input terminal
– Ground terminal (analog)
O Selection signal input to the selector (IC401)
O Selection signal input to the selector (IC401)
I AC cut detection signal input ("L" : AC cut, "H" : normal)
– Terminal for flash program
O MD power supply control signal output
O Terminal for flash program
I Terminal for flash program
O Terminal for flash program
I Terminal for flash program
I/O IIC communication clock
I/O IIC communication data
– Terminal for flash program
O Bias on/off signal output
O Capstan motor signal output
I Reset signal input ("L" : active)
O Main clock input (8MHz)
O Main clock output (8MHz)
– Ground terminal
O Not used (open)
O Terminal for checking
O Terminal for checking
O Terminal for checking
O Terminal for checking
O Recording/playback control signal output
I TC PLAY switch signal output
O TC solenoid control signal output
O Not used (open)
O TC record muting signal output
O TC line muting signal output
O ALC signal output ("L" : ON, "H" : OFF)
I Tape load in switch signal input
I Tape load out switch signal input
O Tape loading motor control signal output
O Tape loading motor control signal output
I TC END switch signal input
I TC switch (F REC, R REC) signal input
I Function key input
I Function key input
I Function key input
Description
MDS-SE9
61