ARM ARM7TDMI - Figure B-11 Debug Control and Status Register Structure

Debug in Depth
ARM DDI 0210C Copyright © 2001, 2004 ARM Limited. All rights reserved. B-55
Figure B-11 Debug control and status register structure
Bit 4
TBIT
Bit 3
cgenl
Bit 2
INTDIS
Bit 1
DBGRQ
Bit 0
DBGACK
Bit 0
DBGACK
Bit 2
IFEN
Bit 1
DBGRQ
Debug
control
register
Debug
status
register
TBIT
(from core)
cgenL
(from core)
DBGACK
(from core)
IFEN
(to core)
DBGRQ
(from ARM7TDMI input)
DBGACKI
(from core)
DBGACK
(to ARM7TDMI
output)
DBGRQI
(to core and
ARM7TDMI output)
Synch
Synch
Synch
Synch
Synch