at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 140

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

20.2
20.2.1
Figure 20-1. Organization of the External Bus Interface
140
Block Diagram
AT91SAM9260
External Bus Interface
Bus Matrix
Address Decoders
AHB
Figure 20-1
shows the organization of the External Bus Interface.
Chip Select
Assignor
APB
Controller
Controller
Memory
SDRAM
Static
External Bus Interface
User Interface
CompactFlash
NAND Flash
Controller
Logic
Logic
ECC
Logic
MUX
PIO
NCS3/NANDCS
D[15:0]
A0/NBS0
A1/NWR2/NBS2
A[15:2], A[20:18]
A16/BA0
A17/BA1
NCS0
NCS1/SDCS
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NWR3/NBS3/CFIOW
SDCK
SDCKE
RAS
CAS
SDWE
SDA10
A21/NANDALE
A22/NANDCLE
NANDOE
NANDWE
D[31:16]
A[25:23]
CFRNW
NCS4/CFCS0
NCS5/CFCS1
NCS2, NCS6, NCS7
NWAIT
CFCE1
CFCE2
6221G–ATARM–31-Jan-08