Datasheet

Introduction
ARM7TDMI Data Sheet
ARM DDI 0029E
1-4
Open Access
1.3 ARM7TDMI Block Diagram
Figure 1-1: ARM7TDMI block diagram
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Scan Chain 0
A[31:0]
Core
Scan Chain 1
D[31:0]
nOPC
nRW
All
Other
Signals
TCK TMS TDInTRST TDO
EXTERN1
EXTERN0
nTRANS
nMREQ
Scan Chain 2
ICEBreaker
TAP controller
MAS[1:0]
Bus Splitter
DIN[31:0]
DOUT[31:0]
RANGEOUT1
RANGEOUT0
TAPSM[3:0] IR[3:0]
SCREG[3:0]