Datasheet

Introduction
ARM7TDMI Data Sheet
ARM DDI 0029E
1-6
Open Access
1.5 ARM7TDMI Functional Diagram
Figure 1-3: ARM7TDMI functional diagram
LOCK
A[31:0]
ABORT
Memory
Management
nOPC
nCPI
CPA
CPB
Coprocessor
Interface
nTRANS
Memory
Interface
Interface
D[31:0]
TCK
TMS
TDI
nTRST
Boundary
Scan
TDO
Processor
Mode
nRW
nMREQ
SEQ
BL[3:0]
MAS[1:0]
APE
TBIT
Processor
State
nM[4:0]
ARM7TDMI
DIN[31:0]
DOUT[31:0]
TAPSM[3:0]
IR[3:0]
Boundary Scan
TCK1
TCK2
11
Control Signals
nTDOEN
SCREG[3:0]
ABE
ALE
nIRQ
nFIQ
Bus
Interrupts
ISYNC
nRESET
MCLK
nWAIT
Clocks
VDD
VSS
Power
DBGRQ
BREAKPT
DBGACK
nEXEC
Debug
Controls
EXTERN 1
DBE
TBE
EXTERN 0
nENOUT
nENIN
ECLK
DBGEN
APE
HIGHZ
BIGEND
BUSEN
RANGEOUT0
RANGEOUT1
DBGRQI
COMMRX
COMMTX
nENOUTI
ECAPCLK
BUSDIS