Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet
Product codes
AT91SAM9N12-EK
Signal Descriptions
A-4
Copyright © 2001-2003 ARM Limited. All rights reserved.
ARM DDI0198D
IHGRANT
Input
AHB bus grant signal (instruction).
IHLOCK
Output
AHB bus lock signal (instruction).
IHPROT[3:0]
Output
AHB bus access information (instruction).
IHREADY
Input
AHB transfer complete signal (instruction).
IHRDATA[31:0]
Input
AHB read data (instruction).
IHRESP[1:0]
Input
AHB transfer response (instruction).
IHSIZE[2:0]
Output
AHB transfer size (instruction), indicating byte,
halfword, or word. IHSIZE[2] is tied LOW.
halfword, or word. IHSIZE[2] is tied LOW.
IHTRANS[1:0]
Output
AHB transfer type (instruction).
IHWRITE
Output
AHB transfer direction (instruction).
Table A-1 AHB related signals (continued)
Signal name
Direction
Description