Signal Descriptions
ARM DUI 0125A
© Copyright ARM Limited 1999. All rights reserved.
A-3
The signals present on the pins labeled A[31:0], B[31:0], and C[31:0] are described in
Table A-1.
Note
Table A-1 shows signal descriptions for an AMBA ASB bus implementation.
Table A-1 Bus bit assignment (for an AMBA ASB bus )
Pin label Name (ASB) Description
A[31:0] System address bus System address bus
B[31:0] Not used -
C[31:0] System control bus See remainder of table.
C[31:16] Not used -
C15 BLOK Locked transaction
C14 BLAST Last response
C13 BERROR Error response
C12 BWAIT Wait response
C11 BWRITE Write transaction
C10 Not used -
C[9:8] BPROT[1:0] Transaction protection type
C7 Not used -
C[6:5] BURST[1:0] Transaction burst size
C4 Not used -
C[3:2] BSIZE[1:0] Transaction width
C[1:0] BTRAN[1:0] Transaction type
D[31:0] System data bus System data bus
