
133
6384E–ATARM–05-Feb-10
AT91SAM9G20
19.6
Chip Configuration User Interface
19.6.1
EBI Chip Select Assignment Register
Register Name:EBI_CSA
Access Type:Read-write
Reset:
0x0001_0000
EBI_CS1A: EBI Chip Select 1 Assignment
0 = EBI Chip Select 1 is assigned to the Static Memory Controller.
1 = EBI Chip Select 1 is assigned to the SDRAM Controller.
EBI_CS3A: EBI Chip Select 3 Assignment
0 = EBI Chip Select 3 is only assigned to the Static Memory Controller and EBI_NCS3 behaves as defined by the SMC.
1 = EBI Chip Select 3 is assigned to the Static Memory Controller and the SmartMedia Logic is activated.
EBI_CS4A: EBI Chip Select 4 Assignment
0 = EBI Chip Select 4 is only assigned to the Static Memory Controller and EBI_NCS4 behaves as defined by the SMC.
1 = EBI Chip Select 4 is assigned to the Static Memory Controller and the CompactFlash Logic (first slot) is activated.
EBI_CS5A: EBI Chip Select 5 Assignment
0 = EBI Chip Select 5 is only assigned to the Static Memory Controller and EBI_NCS5 behaves as defined by the SMC.
1 = EBI Chip Select 5 is assigned to the Static Memory Controller and the CompactFlash Logic (second slot) is activated.
EBI_DBPUC: EBI Data Bus Pull-Up Configuration
0 = EBI D0 - D15 Data Bus bits are internally pulled-up to the VDDIOM power supply.
1 = EBI D0 - D15 Data Bus bits are not internally pulled-up.
Table 19-2.
Register Mapping
Offset
Register
Name
Access
Reset
0x0110 - 0x0118
Reserved
–
0x011C
EBI Chip Select Assignment Register
EBI_CSA
Read-write
0x00010000
0x0130 - 0x01FC
Reserved
–
31
30
29
28
27
26
25
24
––
––––––
23
22
21
20
19
18
17
16
––
––––
IOSR
VDDIOMSEL
15
14
13
12
11
10
9
8
––
–––––
EBI_DBPUC
76
543210
–
EBI_CS5A
EBI_CS4A
EBI_CS3A
–
EBI_CS1A
–