Sony MDX-C8970 Service Manual page 61

• MAIN BOARD IC701 HD6432355A08F (LIQUID CRYSTAL DISPLAY DRIVE CONTROLLER)
Pin No. Pin Name
1, 2 PG3, PG4
3 VSS
4 NC
5 VCC
6 to 9 PC0 to PC3
10 VSS
11 to 14 PC4 to PC7
15 to 18 PB0 to PB3
19 VSS
20 to 23 PB4 to PB7
24 to 27 PA0 to PA3
28 VSS
PA4/IRQ4 to
29 to 32
PA7/IRQ7
33 SP-LAT
34 P66/IRQ2
35, 36 VSS
37 P65/IRQ1
38 BUS-ON
39 VCC
40 CD/MD
41 to 43 PE1 to PE3
44 VSS
45
TIR IND
46, 47 PE5, PE6
48 MD LOCK
49 BU-IN
50 LINK-OFF
51 PD2
52 ILL-ON
53 VSS
54 DOOR-SW
55 NCO
56 PD6
57 BOOT
58 VCC
59 NCO
TX/FL-SO/
60
LCDDATA
61 SP-SI
62 RX
I/O
O Not used (open)
— Ground terminal
—
Not used (open)
—
Power supply terminal (+5V)
O Not used (open)
—
Ground terminal
O Not used (open)
O Not used (open)
— Ground terminal
O Not used (open)
O Not used (open)
—
Ground terminal
O Not used (open)
Serial data latch pulse input for spectrum display from the master controller (IC500)
I
"H" active
O Not used (open)
— Ground terminal
O Not used (open)
Bus on/off control signal output from the master controller (IC500)
I
"L": bus on
—
Power supply terminal (+5V)
Setting terminal for the internal mechanism CD or MD
I
"L": CD, "H": MD (fixed at "H" in this set)
O Not used (open)
—
Ground terminal
O
LED drive signal output of the TIR indicator "H": LED on
O Not used (open)
Mini-disc lock detection signal input from the MD mechanism controller (IC501)
I
"H": lock CLV lock status output in test mode
Battery detect signal input from the SONY bus interface (IC271) and battery detect circuit
I
"L" is input at low voltage
Link on/off control signal output for the SONY bus "L": link on, "H": link off
O
Not used (open)
O Not used (open)
O Power on/off control signal output of the illumination LED "H": power on
—
Ground terminal
I
Front panel open/close detection signal input "L" is input when the front panel is closed
O Not used (open)
O Not used (open)
I
Serial data input at the flash memory writing mode "L" is input when writing change
—
Power supply terminal (+5V)
O Not used (open)
Display serial data output to the liquid crystal display driver (IC900, 920)
O
Output terminal for UART transfer data when writing into internal flash memory data
I Spectrum analyzer display serial data input from the CXD2727Q (IC300)
I Input terminal for UART transfer data when writing into internal flash memory data
Description
Not used (open)
61