Read Sony SRF-DR2000 Service Manual online
– 11 –
IC204 (MSM9553) DECODER
Pin No.
Pin name
I/O
Description
1
MON
–
Not used (Open).
2
ADET IN
I
Analog signal input for test (connected ground).
3
AVDD
–
Power supply terminal for analog (+3.5V).
4
AGND
–
Ground terminal for analog (ground).
5
SG
O
Reference voltage terminal for analog.
6
AIN
I
FM multiplex signal input terminal.
________
7
XOUTC
–
Not used (Open).
8 - 14
MOUT0 - MOUT6
–
Not used (Open).
____
15
INT
O
interrupt signal output to MICOM (IC101).
___
16
WR
I
Write signal input terminal to internal register.
17
NC
–
Not used (Open).
___
18
RD
I
Ready signal input terminal to internal register.
19 - 26
D0 - D7
I/O
Data bus signal input/output terminal to internal register.
27
KGND
–
Ground terminal for digital.
28
DVDD
–
Power supply terminal for digital.
29
XTAL1
I
Oscillator connection terminal (8.192MHz).
30
XTAL2
O
Oscillator connection terminal (8.192MHz).
___
31
CS
I
Chip select signal input terminal.
32
XOUT
–
Not used (Open).
33 - 38
A0 - A5
I
Address signal input terminal to internal register.
39
NC
–
Not used (Open).
____
40
CLR
I
Internal register is reset at “L” setting power down status.
_____
41
IORD
–
Not used (Open).
______
42
IOWR
–
Not used (Open).
43,44
NC
–
Not used (Open).
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