EP80579 Datasheet, PDF (794/1916 Pages) Intel Corporation – Intel® EP80579 Integrated Processor Product Line

Intel^® EP80579 Integrated Processor
21.4.2.7
Offset 3074h: PREOP – Prefix Opcode Configuration
This register is not writable when the SPI Configuration Lock-Down bit in Offset 3020h:
SPIS – SPI Status register is set.
Table 21-11. Offset 3074h: PREOP - Prefix Opcode Configuration
Description:
View: PCI
BAR: RCBA
Bus:Device:Function: 0:31:0
Offset Start: 3074h
Offset End: 3075h
Size: 16 bit
Default: 0004h
Power Well: Core
Bit Range
15 :08
7 :00
Bit Acronym
Bit Description
Sticky
PO1
PO0
Prefix Opcode 1: Software programs an SPI opcode into
this field that is permitted to run as the first command in
an atomic cycle sequence.
Prefix Opcode 0: Software programs an SPI opcode into
this field that is permitted to run as the first command in
an atomic cycle sequence.
Bit Reset
Value
0
04h
Bit Access
RWS
RWS
21.4.2.8
Offset 3076h: OPTYPE – Opcode Type Configuration
This register is not writable when the SPI Configuration Lock-Down bit in Offset 3020h:
SPIS – SPI Status register is set. Entries in this register correspond to the entries in the
Offset 3078h: OPMENU – Opcode Menu Configuration register. Note that the definition
below only provides write protection for opcodes that have addresses associated with
them. Therefore, any erase or write opcodes that do not use an address should be
avoided (for example, “Chip Erase” and “Auto-Address Increment Byte Program”).
Table 21-12. Offset 3076h: OPTYPE - Op Code Type (Sheet 1 of 2)
Description:
View: PCI
BAR: RCBA
Bus:Device:Function: 0:31:0
Offset Start: 3076h
Offset End: 3077h
Size: 16 bit
Default: 0000h
Power Well: Core
Bit Range Bit Acronym
Bit Description
15 :14
13 :12
11 :10
9 :08
7 :06
OT7
OT6
OT5
OT4
OT3
Opcode Type 7: See the description for bits 1:0
Opcode Type 6: See the description for bits 1:0
Opcode Type 5: See the description for bits 1:0
Opcode Type 4: See the description for bits 1:0
Opcode Type 3: See the description for bits 1:0
Sticky
Bit Reset
Value
0
0
0
0
0
Bit Access
RWS
RWS
RWS
RWS
RWS
Intel^® EP80579 Integrated Processor Product Line Datasheet
794
August 2009
Order Number: 320066-003US