Panasonic 3DO FZ-1 Service Manual page 21

FZ-1
Continued (IC600)
Pin
1/0 Pin Name Comment
No.
33 1/0, TTL, BFD1 External bus data 2
1
w/Pull-up
34 1/0, TTL, BFD1 External bus data
Z'
w/Pull-up
35 In, TTL PDCSO- Slow
bus
Chip select strobe
36 1/0, TTL, BFIDIN ID signal return from EX-Bus
w/Pul~UD
37 In, TTL PDWR- Slow
bus
Write signal
38 In, TTL PORO- Slow bus Read signal
39
Ou~ TTL PDWRO-
Write strobe
to
BT9101
40 Out, TTL
PDRDO- Read strobe
to
BT9101
41 In, TTL CLK25M Clock input 25 MHz
42 Vss
43 1/0, TTL, GODO Data bus for CD drive
t'
w/Pull-up
44 1/0,TTL,
CDD1 Data bus for CD drive 2
1
w/PuJl-up
45 1/0, TTL, CDD2 Data bus for CD drive
'1'
w/Pul~up
46 1/0,TTL, C003 Data bus for CD drive 2
3
w/Pul~P
47 1/0, TTL,
CDD4 Data
bus
for CD drive
2"
w/Pull-uo
48 1/0, TTL,
CODS
Data bus for CD drive
2"
w/Pul~UP
49
1/0,
TTL,
CDD6 Data
bus
for CD drive
'Z'
w/Pull-uo
50 1/0, TTL,
CDD7 Data bus for CD drive 2'
w/Pul~o
51 Out, TTL
COEN- CD drive Enable signal
52 Out, TTL CDHWR- CD drive Write signal
53
Ou~ TTL CDHRD- CD drive Read signal
54 In,
TTL,
CDWAIT- CD drive Wait signal
w/Pull-uo
55 In, TTL, CDDTEN- CD drive Data enable signal
w/Pul~p
56
In, TTL,
COSTEN- CD drive Status enable signal
w/Pul~up
57
Vss
58 Vdd
59 Ou~ TTL
CDCMD· CD drive Command signal
60 In, TTL, CDMOCHG CD drive Media change signal
w/PuJl.up
61 Out, TTL CDRST-
CD drive Reset signal
62 1/0, TTL,
EXDO Internal expansion data 'l'
w/Pull-up
63
1/0, TTL, EXD1 Internal expansion data 2
1
w/Pull-up
64 1/0, TTL, EXD2 Internal expansion data 2'
w/Pull-up
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