46
6174B–ATARM–07-Nov-05
AT91FR40162S Preliminary
• 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
0
0
1M Byte
12 Bits (31 - 20)
EBI_PAGES_1M
0
1
4M Bytes
10 Bits (31 - 22)
EBI_PAGES_4M
1
0
16M Bytes
8 Bits (31 - 24)
EBI_PAGES_16M
1
1
64M Bytes
6 Bits (31 - 26)
EBI_PAGES_64M
TDF
Number of Cycles Added after the Transfer
Code Label
EBI_TDF
0
0
0
0
EBI_TDF_0
0
0
1
1
EBI_TDF_1
0
1
0
2
EBI_TDF_2
0
1
1
3
EBI_TDF_3
1
0
0
4
EBI_TDF_4
1
0
1
5
EBI_TDF_5
1
1
0
6
EBI_TDF_6
1
1
1
7
EBI_TDF_7
BAT
Selected BAT
Code Label
EBI_BAT
0
Byte-write access type.
EBI_BAT_BYTE_WRITE
1
Byte-select access type.
EBI_BAT_BYTE_SELECT