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MAIN BOARD IC701 HD6432355A08F (LIQUID CRYSTAL DISPLAY DRIVE CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
PG3, PG4
O
Not used (open)
3
VSS
—
Ground terminal
4
NC
—
Not used (open)
5
VCC
—
Power supply terminal (+5V)
6 to 9
PC0 to PC3
O
Not used (open)
10
VSS
—
Ground terminal
11 to 14
PC4 to PC7
O
Not used (open)
15 to 18
PB0 to PB3
O
Not used (open)
19
VSS
—
Ground terminal
20 to 23
PB4 to PB7
O
Not used (open)
24 to 27
PA0 to PA3
O
Not used (open)
28
VSS
—
Ground terminal
29 to 32
PA4/IRQ4 to
PA7/IRQ7
O
Not used (open)
33
SP-LAT
I
Serial data latch pulse input for spectrum display from the master controller (IC500)
“H” active
34
P66/IRQ2
O
Not used (open)
35, 36
VSS
—
Ground terminal
37
P65/IRQ1
O
Not used (open)
38
BUS-ON
I
Bus on/off control signal output from the master controller (IC500)
“L”: bus on
39
VCC
—
Power supply terminal (+5V)
40
CD/MD
I
Setting terminal for the internal mechanism CD or MD
“L”: CD, “H”: MD (fixed at “H” in this set)
41 to 43
PE1 to PE3
O
Not used (open)
44
VSS
—
Ground terminal
45
TIR IND
O
LED drive signal output of the TIR indicator “H”: LED on Not used (open)
46, 47
PE5, PE6
O
Not used (open)
48
MD LOCK
I
Mini-disc lock detection signal input from the MD mechanism controller (IC501)
“H”: lock CLV lock status output in test mode
49
BU-IN
I
Battery detect signal input from the SONY bus interface (IC271) and battery detect circuit
“L” is input at low voltage
50
LINK-OFF
O
Link on/off control signal output for the SONY bus “L”: link on, “H”: link off
Not used (open)
51
PD2
O
Not used (open)
52
ILL-ON
O
Power on/off control signal output of the illumination LED “H”: power on
53
VSS
—
Ground terminal
54
DOOR-SW
I
Front panel open/close detection signal input “L” is input when the front panel is closed
55
NCO
O
Not used (open)
56
PD6
O
Not used (open)
57
BOOT
I
Serial data input at the flash memory writing mode “L” is input when writing change
58
VCC
—
Power supply terminal (+5V)
59
NCO
O
Not used (open)
60
TX/FL-SO/
LCDDATA
O
Display serial data output to the liquid crystal display driver (IC900, 920)
Output terminal for UART transfer data when writing into internal flash memory data
61
SP-SI
I
Spectrum analyzer display serial data input from the CXD2727Q (IC300)
62
RX
I
Input terminal for UART transfer data when writing into internal flash memory data
Summary of Contents for MDX-C8970
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Page 41: ...41 MDX C8970 4 22 SCHEMATIC DIAGRAM RELAY Board Page 39 Page 33 ...