Atmel Evaluation Kit AT91SAM9260-EK AT91SAM9260-EK Data Sheet
Product codes
AT91SAM9260-EK
15
SAM9260 [SUMMARY]
6221LS–ATARM–15-Oct-12
7.
Processor and Architecture
7.1
ARM926EJ-S Processor
z
RISC Processor Based on ARM v5TEJ Architecture with Jazelle technology for Java acceleration
z
Two Instruction Sets
z
ARM High-performance 32-bit Instruction Set
z
Thumb High Code Density 16-bit Instruction Set
z
DSP Instruction Extensions
z
5-Stage Pipeline Architecture:
z
Instruction Fetch (F)
z
Instruction
Decode (D)
z
Execute (E)
z
Data Memory (M)
z
Register Write (W)
z
8-Kbyte Data Cache, 8-Kbyte Instruction Cache
z
Virtually-addressed 4-way Associative Cache
z
Eight words per line
z
Write-through and Write-back Operation
z
Pseudo-random or Round-robin Replacement
z
Write Buffer
z
Main Write Buffer with 16-word Data Buffer and 4-address Buffer
z
DCache Write-back Buffer with 8-word Entries and a Single Address Entry
z
Software Control Drain
z
Standard ARM v4 and v5 Memory Management Unit (MMU)
z
Access Permission for Sections
z
Access Permission for large pages and small pages can be specified separately for each quarter of the
page
page
z
16 embedded domains
z
Bus Interface Unit (BIU)
z
Arbitrates and Schedules AHB Requests
z
Separate Masters for both instruction and data access providing complete Matrix system flexibility
z
Separate Address and Data Buses for both the 32-bit instruction interface and the 32-bit data interface
z
On Address and Data Buses, data can be 8-bit (Bytes), 16-bit (Half-words) or 32-bit (Words)
7.2
Bus Matrix
z
6-layer Matrix, handling requests from 6 masters
z
Programmable Arbitration strategy
z
Fixed-priority Arbitration
z
Round-Robin Arbitration, either with no default master, last accessed default master or fixed default master
z
Burst Management
z
Breaking with Slot Cycle Limit Support
z
Undefined Burst Length Support
z
One Address Decoder provided per Master
z
Three different slaves may be assigned to each decoded memory area: one for internal boot, one for
external boot, one after remap
external boot, one after remap