at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 168

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

20.2
20.2.1
Figure 20-1. Organization of the External Bus Interface 0
168
Block Diagram
AT91SAM9263 Preliminary
External Bus Interface 0
Bus Matrix
Address Decoders
AHB
Figure 20-1
shows the organization of the External Bus Interface 0.
Chip Select
Assignor
APB
Controller
Controller
Memory
SDRAM
External Bus Interface 0
Static
User Interface
CompactFlash
NAND Flash
Controller
Logic
Logic
ECC
Logic
MUX
PIO
D[15:0]
A0/NBS0
A1/NWR2/NBS2
A[15:2], A[20:18]
A16/BA0
A17/BA1
NCS0
NCS1/SDCS
NCS3/NANDCS
NRD/CFOE
NWR0/NWE/CFWE
NWR1/NBS1/CFIOR
NWR3/NBS3/CFIOW
SDCK
SDCKE
RAS
CAS
SDWE
SDA10
NANDOE
NANDWE
D[31:16]
A[25:23]
CFRNW
NCS4/CFCS0
NCS5/CFCS1
NCS2
NWAIT
CFCE1
CFCE2
A21/NANDALE
A22/NANDCLE
6249D–ATARM–20-Dec-07