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Name
Direction
RANGEOUT0
Output
RANGEOUT1
Output
TBE
Input
ARM DDI0145B
Description
EmbeddedICE Rangeout 0. This signal indicates that the EmbeddedICE macrocell
watchpoint unit 0 has matched the conditions currently present on the address, data and
control buses. This signal is independent of the state of the watchpoint's enable control
bit.
EmbeddedICE Rangeout 1. This signal indicates that the EmbeddedICE macrocell
watchpoint unit 1 has matched the conditions currently present on the address, data and
control buses. This signal is independent of the state of the watchpoint's enable control
bit.
Test Bus Enable. When driven LOW, TBE forces the following signals to HIGH
impedance:
DD[31:0]
DA[31:0]
DLOCK
DMAS[1:0]
DnM[4:0]
DnRW
DnTRANS
DMORE
DnMREQ
DSEQ
IA[31:0]
InM[4:0]
InTRANS
InMREQ
ISEQ
ITBIT
LATECANCEL
PASS.
Under normal operating conditions, TBE should be held HIGH at all times.
If UNIEN is HIGH, this signal is ignored.
Copyright © 1998, 1999 ARM Limited. All rights reserved.
ARM9TDMI Signal Descriptions
Table A-5 Debug signals (continued)
A-9
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