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8-2. Gate Array (LSI2)
Gate array: FM3416
Pin No.
Name
1
VDD1
2
V5WEB
3
V5A20
4
BSYB
5
V5A21
6
V5A16
7
V5A22
8
V5A15
9
VSS
10
V5A23
11
V5A12
12
V5A24
13
V5A7
14
V5A25
15
V5A6
16
V5A5
17
PORT0
18
VDD2
19
VSS
20
RESET
21
V5A4
22
V5A3
23
INPACKB
24
V5A2
25
REGB
26
V5A1
27
BVD2
28
V5A0
29
BVD1
30
VSS
31
CD2B
32
V5D8
33
V5D1
34
V5D9
35
V5D2
36
V5D10
37
VDD1
38
P3
39 ~ 44
D10 ~ D15
45
VSS
46
V5WAITB
47 ~ 53
D3 ~ D9
54
VDD2
55
VSS
56 ~ 58
D0 ~ D2
59
CS6B
60
WEB
61
OEB
62
CS1B
63
P5
64
V5D0
65
VDD1
66
VSS
I / O
I
Power supply to Gate array (5 V)
O
not used
O
not used
I
not used
O
not used
O
Address bus to ROM for MODEM
O
not used
O
Address bus to ROM for MODEM
Ground for Gate array
O
ER (Request signal to MODEM for operation of MODEM)
O
Address bus to ROM for MODEM
O
RS (Request signal to MODEM for sending data)
O
Address bus to ROM for MODEM
O
SD (Data to send from BN Unit to MODEM)
O
Address bus to ROM for MODEM
O
Address bus to ROM for MODEM
I
RESET signal from CPU (LSI1)
I
Power supply to Gate array (3 V)
Ground for Gate array
O
RESET signal to IC for MODEM
O
Address bus to ROM for MODEM
O
Address bus to ROM for MODEM
I
RD (Data to send from MODEM to BN Unit)
O
Address bus to ROM for MODEM
O
not used
O
Address bus to ROM for MODEM
I
DR (OK signal from MODEM in response to ER)
O
Address bus to ROM for MODEM
I
CD (Information signal from MODEM to BN Unit (Detection of carrier))
Ground for Gate array
I
not used
I/O
not used
I/O
Data bus for ROM of MODEM
I/O
not used
I/O
Data bus for ROM of MODEM
I/O
not used
I
Power supply to Gate array (5 V)
I
Clock (10 MHz) from CPU
I/O
Data bus for CPU
Ground for Gate array
I
not used
I/O
Data bus for CPU
I
Power supply to Gate array (3 V)
Ground for Gate array
I/O
Data bus for CPU
I
Chip select signal to LSI for MODEM passing trough Gate array
I
Write enable signal from CPU
I
Output enable signal from CPU
I
Chip select signal from CPU
O
Control signal to power supply to MODEM (5 V ON/OFF)
I/O
Data bus for ROM of MODEM
I
Power supply to Gate array (5 V)
Ground for Gate array
— 42 —
Function
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