Sony STR-K700 - Fm Stereo/fm-am Receiver Service Manual page 29

IC1401 PCM1800E/2K
24
SINGLE-END
DEFERENTIAL
CONVERTER
1
– DISPLAY Board –
IC100 PT6315
LED1
1
LED2
2
LED3 3
LED4
4
OSC OSC
5
DOUT 6
DIN
7
Serial
interface
CLK
8
STB
9
KEY1
10
KEY2 11
12 13
23 22 21 20 19
DIGITAL ∑
MODULATOR
DIGITAL ∑
MODULATOR
SINGLE-END
REFERENCE DEFERENTIAL
CONVERTER
2 3 4 5
44 43 42 41 40 39
Grid driver
Command decoder
Display memory
24 bits x 12 words
Timing generator
key scan
Key data memory
(2 x 16 bits)
18 17 16
1/64
SERIAL I/O
DECIMATION
INTERFACE
FILTER
&
MODE/FORMAT
LOW-CUT
CONTROL
FILTER
CLOCK/
TIMING CONTROL RESET/
POWER CONTROL
6 7
38 37 36 35
Multiplexed driver
segment driver
14 15 16 17 18 19 20 21
STR-K700
15 14 13
&
8 9 10 11 12
34
SEG19/GRID10
33
32 SEG18/GRID11
SEG17/GRID12
31
30 VEE
SEG16/KS16
29
SEG15/KS15
28
27 SEG14/KS14
SEG13/KS13
26
25 SEG12/KS12
SEG11/KS11
24
SEG10/KS10
23
22
29