Sony STR-DH130 Service Manual page 21

• IC Block Diagrams
IC100 PT6315 (DISPLAY BOARD)
44 43
1
SW1
2
SW2
SW3 3
SW4 4
OSC
5 OSC
6
DOUT
DIN 7
Serial
interface
CLK 8
STB 9
KEY1 10
KEY2 11
12 13
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42 41 40 39 38
Grid driver
Command decoder
Display memory
24 bits x 12 words
Timing generator
key scan
Key data memory
(2 x 16 bits)
14 15 16
37 36 35 34
Multiplexed driver
33
32
31
30
29
28
27
26
25
24
segment driver
23
17 18 19 20 21 22
STR-DH130
GRID10
GRID11
SEG17
VEE
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
21