AT91SAM7A2-AI datasheet(46/369 Pages) ATMEL

46 / 369 page

PRELIMINARY

AT91SAM7A2

6021A–ATARM–07/04

AMC Chip Select Register

Name:

AMC_CSR1...AMC_CSR3

Access:

Read/Write

Base Address:

0x004, 0x008, 0x01C

• BA[9:0]: Base Address

Bits [31:30] are set by hardware, so the base address can only be in the memory space 0x40000000-0x7FFFFFFF. The

other bits contain the highest bits of the base address. If the page size is larger than 1Mbyte, the unused bits of the base

address are ignored by the AMC decoder.

• CSEN: Chip Select Enable

0: Chip select is disabled.

1: Chip select is enabled.

• BAT: Byte Access Type

0: Byte write access type.

1: Byte select access type.

• TDF[2:0]: Data Float Output Time

These bits select the number of cycles added after a memory transfer.

–

BA[9:4]

BA[3:0]

––

–

CSEN

BAT

TDF[2:0]

PAGES1

543

PAGES0

–

WSE

NWS[2:0]

DBW[1:0]

TDF[2:0]

Cycles Added

000

001

010

011

100

101

110

111

AT91SAM7A2-AI 데이터시트(PDF) 46 Page - ATMEL Corporation

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