AT91 datasheet(47/153 Pages) ATMEL

47 / 153 page

AT91X40 Series

1354D–ATARM–08/02

• PAGES: Page Size

• TDF: Data Float Output Time

• BAT: Byte Access Type

• CSEN: Chip Select Enable (Code Label EBI_CSEN)

0 = Chip select is disabled.

1 = Chip select is enabled.

• BA: Base Address (Code Label EBI_BA)

These bits contain the highest bits of the base address. If the page size is larger than 1M byte, the unused bits of the base

address are ignored by the EBI decoder.

PAGES

Page Size

Active Bits in Base Address

Code Label

EBI_PAGES

1M Byte

12 Bits (31 - 20)

EBI_PAGES_1M

4M Bytes

10 Bits (31 - 22)

EBI_PAGES_4M

16M Bytes

8 Bits (31 - 24)

EBI_PAGES_16M

64M Bytes

6 Bits (31 - 26)

EBI_PAGES_64M

TDF

Number of Cycles Added after the Transfer

Code Label

EBI_TDF

EBI_TDF_0

EBI_TDF_1

EBI_TDF_2

EBI_TDF_3

EBI_TDF_4

EBI_TDF_5

EBI_TDF_6

EBI_TDF_7

BAT

Selected BAT

Code Label

EBI_BAT

Byte-write access type.

EBI_BAT_BYTE_WRITE

Byte-select access type.

EBI_BAT_BYTE_SELECT

AT91 Datasheet(PDF) 47 Page - ATMEL Corporation

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