Ic423 Digital Signal Processor (Ssp424923) - Sony SDP-EP9ES Service Manual

• IC423 Digital Signal Processor (SSP424023)
Pin No. Pin Name
AGND
1
2 MCS0
MCS3
3
4 MA14
MA13
5
6 AVCC
MA12
7
8 AGND
QVCC
9
10 QGND
MA11
11
12 MA10
MA9
13
14 MA8
AGND
15
16 MA7
AVCC
17
18 MA6
MA5
19
20 MA4
21 AGND
22 MA3
23 MA2
24 MA1
25 MA0
SCK
26
27 EXTAL
QVCC
28
29 QGND
PINIT
30
31 PGND
PCAP
32
33 PVCC
SGND
34
35 MISO
RESET
36
37 MODA
MODB
38
39 MODC
40 SVCC
I/O
–
Address buffer ground
O Chip select 0 output to S-RAM (Not used)
O
Chip select 3 output to S-RAM
O
Address data output to S-RAM
O
– Address bus buffer power supply (+5V)
O
Address data output to S-RAM
– Ground for address bus buffer
–
Power supply for internal logic (+5V)
– Ground for internal logic
O
O
Address data output to S-RAM
O
O
Ground for address bus buffer
–
Address data output to S-RAM
O
Power supply for address bus buffer (+5V)
–
O
Address data output to S-RAM
O
O
Ground for address bus buffer
–
O
O
Address data output to S-RAM
O
O
SPI serial clock signal input from system controller
I
External frequency input (3 MHz)
I
Power supply for internal logic (+5V)
–
Ground for internal logic
–
PLL initialize input (Fixed at "L")
I
Ground for PLL
–
PLL filter input (Connected to 0.01 µF capacitor)
I
Power supply for PLL (+5V)
–
Ground for serial port
–
Master data signal input from system controller
I
Reset signal input from system controller
I
Mode select A (Fixed at "H")
I
Mode select B (Fixed at "L")
I
Mode select C (Fixed at "H")
I
Power supply for serial port (+5V)
–
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Function Function