Sony WX-7700MDX, Руководство по обслуживанию

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76
WX-7700MDX
•
DISPLAY BOARD IC710 HD6432355A45F (DISPLAY CONTROLLER)
Pin No. Pin Name I/O Description
1, 2 NCO O
Not used
3 VSS — Ground terminal
4 NCO O
Not used
5 VCC —
Power supply terminal (+5V)
6 to 9 NCO O Not used
10 VSS —
Ground terminal
11 to 18 NCO O
Not used
19 VSS —
Ground terminal
20 to 23 NCO O
Not used
24 PEAK RST O
Peak hold reset signal output to the peak detect IC “H”: reset
25 to 27 NCO O
Not used
28 VSS — Ground terminal
29 LVL RD I
Level reading detect signal input from the sampling timer IC
30 to 32 NCO O
Not used
33 SP-LAT I Serial data latch pulse input for spectrum analyzer display from the master controller “H” active
34 BU IN
I
Back-up power supply detection signal input from the SONY bus interface
“L” is input at low voltage
35, 36 VSS —
Ground terminal
37 NCO O Not used
38 BUSON
I
Bus on/off control signal input (for the SONY bus) from the master controller
“L”: bus on
39 VCC —
Power supply terminal (+5V)
40 to 43 NCO O Not used
44 VSS —
Ground terminal
45 to 49 NCO O
Not used
50 LINKOFF O
Uni link on/off control signal output for the SONY bus interface “L”: link on, “H”: link off
51 NCO O
Not used
52
ILLON
O
Power supply on/off control signal output of the front panel illumination LED “H”: power on
53 VSS —
Ground terminal
54 to 56 NCO O Not used
57 BOOT I
Detect signal input at the flash memory writing mode from the master controller
“L” is input when writing mode
58 VCC —
Power supply terminal (+5V)
59 NCO O Not used
60
LCD SO/TX O
Display serial data output to the liquid crystal display driver IC
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
62 RX I Input terminal for UART transfer data when writing into internal flash memory data
63 SP CLK
I Spectrum analyzer display serial data transfer clock signal input from the master controller
64 LCD CLK
O Display serial data transfer clock signal output to the liquid crystal display driver IC
65 VSS — Ground terminal
66 LCD CE0
O Chip enable signal output to the liquid crystal display driver IC
67, 68 VSS —
Ground terminal
69 LCD INH
O Blank indicate control signal output to the liquid crystal display driver IC
70 LCD CE1 O Chip enable signal output to the liquid crystal display driver IC