Open Access
Summary of Jumpers and Links
D-5
ARM Development Board (ARM7TDMI
Version) Hardware Reference Guide
ARM DUI 0017C
D.5 DIP Switches
.
B#CYC1
1
B#CYC0
1
Cycles Ref Position Name Option Description
on on 2 * S1 1 SEL0 on/off see Table D-8
on off 3 2 SEL1 on/off see Table D-8
off on 4 3 SEL2 on/off see Table D-8
off off 5 4 SEL3 on/off see Table D-8
Table D-5: S2 Switch positions
S2 1 B0CYC0 on/off see Table D-5
2 B0CYC1 on/off see Table D-5
3 B0SIZ0 on/off see Table D-6
B#SIZ1
1
B#SIZ0
1
Size 4 B0SIZ1 on/off see Table D-6
on on 8-bit 5 B1CYC0 on/off see Table D-5
on off 16-bit 6 B1CYC1 on/off see Table D-5
off on 32-bit * 7 B1SIZ0 on/off see Table D-6
off off 32-bit 8 B1SIZ1 on/off see Table D-6
Table D-6: S2 Switch positions
S3 1 S3-1 on/off toggle parallel port bit 0
2 S3-2 on/off toggle parallel port bit 1
1. # is the bank number: 0 or 1
3 S3-3 on/off toggle parallel port bit 2
4 S3-4 on/off toggle parallel port bit 3
Table D-7: S!, S2, and S3
Switch position Frequency (MHz)
SEL3 SEL2 SEL1 SEL0 SYSCLK SYSCLK2X
on on on on 4 8
on on on off 8 16
on on off on 16 32
on on off off 20 40
Table D-8: S1 switch positions
hrg.book Page 5 Wednesday, July 22, 1998 9:18 AM
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