A. Board Configuration
ÛZIATECH
88
Customer Jumper Configuration
ZT8907
W5
W6
W7
W8
W9
W1
W2
A
B
A
B
W3
W4
A
B
A
B
W3
W4
A
B
W1
W2
A
B
W5
W6
W7
W8
W9
2
1
9
10
1
2
10
9
J12
RP1
RP2
RP1
RP2
JUMPER DESCRIPTIONS
The ZT 8907 includes jumpers with two posts and jumpers with three posts. Jumpers
having only two posts are labeled W
x,
where
x
defines the jumper number (for example,
W5). Jumpers having three posts are labeled W
x
"A" and "B" (for example, W1A and
W1B). These jumpers have two possible selections, where "A" is one selection and "B"
is another.
This section also documents J12, which serves as both the In-System Programming
connector (see Appendix B, "
") and the Port 80 Decode jumper below.
The following topics list the jumpers in numerical order and provide a detailed
description of each jumper. A dagger (
†
) indicates the default jumper configuration.
W1 (Multiple Master Interrupt)
Configuring W1 selects the signal path for the
multiple
master
interrupt (required for
operation in an STD 32 STAR SYSTEM). By default (W1A = In) the ZT 8907 uses
INTRQ4* for the multiple master interrupt and makes INTRQ* available for application
use.