Service manual

ICS SCU {Custom Gate Array)
IC CUSTOM CHIP SCU QFP
Pans No.: 315-5688
•Top View
52
53
• Description
No.
1/0
I
-
2
1!0
3
1/0
4
1/0
5
1/0
6
I/0
7
I/0
8
1!0
9
-
10
I/0
11
-
12
I/0
13
I/0
14
1!0
15
1/0
16
0
17
0
18
0
19
-
20
0
21
-
22
0
157
104
156
I
I
105
Name
VSS
AD4
ADS·
AD6
AD7
AD8
AD9
ADIO
VDD
ADII
vss
AD12
AD13
AD14
ADIS
AAO
AAl
AA2
vss
AA3
VDD
AA4
• Block Diagram
INT
f--
'---z:-----1~
<••n••••••••·••••·ln.·••••••·•••••••••• p->
CPU
1/F
A-Bus
1/F
DMA
-
TIMER .__ :: -
1-_:-+---ilB
B-Bus
1/F
DSP
Function
GND
A-bus data bit 4
A-bus data bit 5
A-bus data bit 6
A-bus data bit 7
A-bus data bit 8
A-bus data bit 9
A-bus data bit
10
Power supply +5V
A-bus data bitll
GND
A-bus data bit 12
A-bus data bit 13
A-bus data bit 14
A-bus data bit 15
A-bus address bit
0
A-bus address bit 1
A-bus address bit 2
GND
A-bus address bit 3
Power
supply +5V
A-bus address bit 4
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