Manual

140
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
• MPBS0_SFR: MPBlock Slave 1 Special Function Register
The value of the register is directy connected to MPBlock inputs and may be used to implement any MPBlock configuration
register
20.6.3 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 BCRAM 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 NAND Flash 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.
• EBI_DQSPDC: EBI Data Qualifier Strobe Pull-Down Configuration
0 = EBI DQS0 and DQS1 signals are internally pulled-down to the GNDIOM power ground.
1 = EBI DQS0 and DQS1 signals are not internally pulled-down.
• VDDIOMSEL: Memory voltage selection
0 = Memories are 1.8V powered.
1 = Memories are 3.3V powered.
MPBS1_SFR
76543210
MPBS1_SFR
31 30 29 28 27 26 25 24
––––––––
23 22 21 20 19 18 17 16
–––––––VDDIOMSEL
15 14 13 12 11 10 9 8
––––––EBI_DQSPDCEBI_DBPUC
76543210
– – EBI_CS5A EBI_CS4A EBI_CS3A – EBI_CS1A –