Sony STR-KM3 - Page 48

STR-KM2/KM3
48
IC100 PT6315 (DISPLAY BOARD)
IC3507 TC74LCX541FT (EKJ) (HDMI RE BOARD (2/2)) (KM3)
11Y8
12Y7
13Y6
14Y5
15Y4
16Y3
17Y2
18Y1
19G2
20Vcc
10 GND
9A8
8A7
7A6
6A5
5A4
4A3
3A2
2A1
1G
1
2
3
4
5
4-bit latch
24-bit output latch
12-bit shift register
Data selector
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
23
24
25
26
27
28
29
30
31
32
33
3435363738
Serial
interface
OSC
Timing generator
key scan
Display memory
24 bits x 12 words
Key data memory
(2 x 16 bits)
Command decoder
segment driver
Grid driver
Multiplexed driver
394041424344
SW1
SW2
SW3
SW4
OSC
DOUT
DIN
CLK
STB
KEY1
KEY2
VSS
VDD
SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9
SEG10
GRID9 GRID8 GRID7 GRID6 GRID5 GRID4 GRID3 GRID2 GRID1 VDD VSS
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
VEE
SEG17
GRID11
GRID10