STK1000/EBI interface

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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

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
Static version created: 2007-03-07
Copyright (c) 2007 Atmel Corporation