Sony MXD-D5C Service Manual page 87

• MAIN BOARD IC805 M30622MA-1BOFP (DISPLAY CONTROLLER)
Pin No. Pin Name
1 to 7 NC
8 BYTE
9 CNVSS
10. 11 NC
12 XRESET
13 XOUT
14 GND
15 XIN
16 VCC
17
NMI
18. 19 NC
20 CMD CS
21 to 24 NC
25 FLBK
26 CMD REQ
27 CMD BUSY
28 CMD CLK
29 CMD RXD
30 CMD TXD
31 TXD1
32 RXD1
33 CLK1
34 RTS1
35 FL TXD
36 NC
37 FL CLK
38 FL LAT
39 RDY
40 ALE
41 HOLD
42 HPLDA
43 BCLK
44 RD
45 BHE
46 WR
47 to 49 P47 to P45
50 FNT CE
51 OPEN
52 to 61 A18 to A9
62 VCC
63 A8
64 VSS
65 to 72 A7 to A0
73 to 80 NC
I/O
O
Not used (open)
I
External data bus line byte selection signal input "L": 16 bit, "H": 8 bit (fixed at "L")
—
Ground terminal
O
Not used (open)
System reset signal input from the CD mechanism controller (IC800) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
O
Main system clock output terminal (10 MHz)
— Ground terminal
I
Main system clock input terminal (10 MHz)
—
Power supply terminal (+5V)
I
Non-maskable interrupt input terminal "L" active (fixed at "H" in this set)
O Not used (open)
I
Communication INT signal input from the CD mechanism controller (IC800)
O
Not used (open)
O
Blanking signal output to the fluorescent indicator tube (FL900)
O Serial data transfer request signal output to the CD mechanism controller (IC800)
O
Serial data transfer permission signal output to the CD mechanism controller (IC800)
I
Serial data transfer clock signal input from the CD mechanism controller (IC800)
I
Serial data input from the CD mechanism controller (IC800)
O Serial data output to the CD mechanism controller (IC800)
O
Not used (open)
O
Not used (open)
O
Not used (open)
O Not used (open)
O
Display serial data output to the fluorescent indicator tube (FL900)
O
Not used (fixed at "L")
O
Display serial data transfer clock signal output to the fluorescent indicator tube (FL900)
O Display latch signal output to the fluorescent indicator tube (FL900)
I
Not used (fixed at "H")
O
Not used (open)
I
Not used (open)
O Not used (open)
O
Not used (open)
O
Not used (open)
O
Not used (open)
O Not used (fixed at "L")
O
Not used (fixed at "L")
O
Not used (open)
O
Not used (fixed at "H")
O Not used (open)
—
Power supply terminal (+5V)
O
Not used (open)
—
Ground terminal
O Not used (open)
O
Not used (open)
Description
87