Sony STR-DA5500ES Service Manual Digest page 172

STR-DA5500ES
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DISPLAY BOARD IC105 μPD78F0527GB(S)-UET-A (UPDATE SIGNAL PROCESSOR)
Pin No. Pin Name
1 to 4 NO USE
5 RESET
6, 7 NO USE
8 FLMD0
9 OSC OUT
10 OSC IN
11 REGC
12 VSS
13 VDD
BAUDRATE3 to
14 to 16
BAUDRATE1
17 NO USE
18 P33
19 to 30 NO USE
31 IR OUT
32 NO USE
33 NO USE
34 NO USE
35 NO USE
36 UART IN
37 UART OUT
38 AVREF
39 AVSS
40 to 47 NO USE
TE
48 LEARN LED
L 13942296513
49, 50 NO USE
51 LEARN CIR ON
52 LEARN IR IN
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I/O
- Not used
I Reset signal input from the system controller
- Not used
I Writing mode setting signal input terminal
O System clock output terminal (5 MHz)
I System clock input terminal (5 MHz)
I External capacitor connection terminal
- Ground terminal
- Power supply terminal (+3.3V)
I Baud rate setting terminal
- Not used
O Writing mode setting signal output terminal
- Not used
O SIRCS signal output terminal
- Not used
I Update signal input terminal
O Update signal output terminal
- Not used
I Serial data input from the system controller
O Serial data output to the system controller
I Reference voltage (+3.3V) input terminal
- Ground terminal
- Not used
O LED drive signal output terminal
- Not used
O Learning circuit on/off control signal output terminal
I SIRCS (for learning) signal input terminal
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2 9
8
Description
"L": reset
Q Q
Not used
3 6 7 1 3 1 5
"H": learning circuit on
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9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9