STK1000/EBI interface
From AVRFreaks Wiki
The External Bus Interface (EBI) is used to connect the memory hierarchy of the STK1000 system. The memory hierarchy is expandable through the PCI expansion connector.
Peripherals and connectors
- Parallel flash (1)
- SDRAM (2)
- Compact Flash connector (3)
- PCI expansion connector (4)
Signal description
Please refer the datasheet for the AVR32 processor on you daughter board for a description of these signals
Signal | Used by | Description |
---|---|---|
D[0..31] | 1, 2, 3, 4 | Data lines |
A[0..25] | 1, 2, 3, 4 | Address bus |
BA[0,1] | 2, 4 | Bank select 0 and bank select 1 |
EBI_NCS0 | 1, 4 | Static Memory Controller Chip Select Line 0 |
EBI_NCS1/SDCS0 | 2, 4 | Static Memory Controller Chip Select Line 1 / SDRAM Chip Select 0 |
EBI_SDCS1 | 4 | SDRAM Chip Select 1 |
EBI_NRD/NOE/CFOE | 1, 3, 4 | Read Signal / Output Enable / Compact Flash Output Enable |
EBI_NWR0/NWE/CFWE | 1, 3, 4 | Enable lower byte write / Write enable / Compact Flash Write Enable |
EBI_NWR1/NBS1/CFIOR | 2, 3, 4 | Byte 1 Select signal / Compact Flash IO Read |
EBI_NWR3/NBS3/CFIOW | 2, 3, 4 | Byte 3 Select signal / Compact Flash IO Write |
EBI_SDCK | 2, 4 | SDRAM Clock |
EBI_SDCKE | 2, 4 | SDRAM Clock Enable |
EBI_RAS | 2, 4 | Row signal |
EBI_CAS | 2, 4 | Column signal |
EBI_SDWE | 2, 4 | SDRAM write enable |
EBI_SDA10 | 2, 4 | SDRAM address line 10 |
EBI_A0/NBS0 | 2, 3, 4 | Address 0 / Byte 0 Select signal |
EBI_A1/NWR2/NBS2 | 1, 2, 3, 4 | Address 1 / Write byte 2 / Byte 2 Select signal |
EBI_CFCE[1,2] | 3, 4 | Compact Flash Chip Enable |
EBI_NCS4/CFCS0 | 3, 4 | Static Memory Controller Chip Select Line 4 / Compact Flash Chip Select 0 |
EBI_NCS5/CFCS1 | 4 | Static Memory Controller Chip Select Line 5 / Compact Flash Chip Select 1 |
EBI_CFRNW | 4 | Compact Flash Read Not Write |
EBI_NWAIT | 3, 4 | External wait signal |
EBI_NCS2 | 4 | Static Memory Controller Chip Select Line 2 |
EBI_NCS3/NANDCS | 4 | Static Memory Controller Chip Select Line 3 / Smart media chip select line |
EBI_NANDOE | 4 | Nand flash output enable |
EBI_NANDWE | 4 | Smart media write enable / Nand flash write enable |