EP80579 Datasheet, PDF (789/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
21.3.1.5 SPI Timings
The SPI interface is designed to fall within the following protocol timing specs. These
specs are intended to operate with most SPI Flash devices.
Table 21-3. SPI Cycle Timings
Parameter
SPI_CS# Setup
SPI_CS# Hold
Clock High
Clock Low
Minimum Value
30 ns
30 ns
22 ns
22 ns
Description
SPI_CS# low to SPI_CLK high
SPI_CLK low to SPI_CS# low
Time that SPI_CLK is Driven high per clock period
Time that SPI_CLK is Driven Low per clock period
21.4
Host Side Interface
21.4.1
Warning:
SPI Host Interface Registers
The SPI Host Interface registers are memory-mapped in the RCRB Chipset Memory
Space in the range 3020h to 308Fh.
Address locations that are not listed are considered reserved register locations. Reads
to reserved registers may return non-zero values. Writes to reserved locations may
cause system failure.
The table below does NOT include the 3020h offset.
21.4.2 Register Overview
Table 21-4. Bus 0, Device 31, Function 0, PCI Registers Mapped Through RCBA Bar
Offset Start Offset End
Register ID - Description
Default
Value
3020h
3022h
3024h
3028h
3030h at 4h
3070h
3074h
3076h
3078h
3080h at 4h
3021h
3023h
3027h
302Bh
306Ch at 4h
3073h
3075h
3077h
307Fh
3083h at 4h
“Offset 3020h: SPIS - SPI Status” on page 790
0001h
“Offset 3022h: SPIC - SPI Control” on page 791
2005h
“Offset 3024h: SPIA - SPI Address” on page 792
00XXXXXh
“Offset 3028h: SPID0 - SPI Data 0” on page 792
XXXXXXXXh
“Offset 3030h, 3038h, 3040h, 3048h, 3050h, 3058h, 3060h: SPI[0-6] - SPI Data
[0-6]” on page 793
00000000h
“Offset 3070h: BBAR - BIOS Base Address” on page 793
00000000h
“Offset 3074h: PREOP - Prefix Opcode Configuration” on page 794
0004h
“Offset 3076h: OPTYPE - Op Code Type” on page 794
0000h
“Offset 3078h: OPMENU - OPCODE Menu Configuration” on page 795
00000005h
“Offset 3080h: PBR0 - Protected BIOS Range #0” on page 796
00000000h
August 2009
Order Number: 320066-003US
Intel^® EP80579 Integrated Processor Product Line Datasheet
789