F71862
4
3
SPI0_TIMER_DIS
R/W
-
When SPI is used as primary BIOS, it will also have backup function as used in
backup BIOS. The bit will set to 1 when the time in second reaches the value
programmed in TIMER_VAL (CRF1). That is the first SPI could not function
well. Then a reset signal will asserted and reboot the system with the second
SPI. (I could be another SPI with chip-selected by FWH_DIS or another 4Mbits
of an 8Mbits SPI. The SPI_CS1_EN (CR2D[4]) determines the method). Write
one to clear this bit.
SPTEF
R
-
0
-
SPI operation status. When SPI is transferred or received data from device,
this bit will be set 1, Clear by SPI operation finish.
2-0 Reserved
Reserved
SPI High Byte Data Register Index F4h
Bit Name R/W Default
Description
7-0 H_DATA
R
0
When SPI is received 16 bits data from device. This register saves high byte
data.
SPI command data Register Index F5h
Bit Name R/W Default
Description
7-0 CMD_DATA
R/W
0
This register provides command value for flash command.
SPI chip select Register Index F6h
Bit Name R/W Default
Description
7-4 Reserved
-
-
Reserved
3
2
1
0
Dummy_Reg
R/W
R/W
R/W
R/W
0
0
0
0
Dummy register.
Dummy_Reg
Dummy_Reg
CS0
Dummy register.
Dummy register.
Chip select 0. To select device 0
SPI memory mapping Register Index F7h
Bit Name R/W Default
Description
7-3 Reserved
2-0 Mem_map
-
0
-
Reserved
R/W
This register decides memory size.
3’b000: one of the memory sizes is 512k bytes.
3’b001: one of the memory sizes is 1024k bytes.
3’b100: one of the memory sizes is 2048k bytes.
3’b011: one of the memory sizes is 4096k bytes.
3’b100: one of the memory sizes if 8092k bytes.
SPI operate Register Index F8h
Bit
Name
R/W Default
Description
7
TYPE
R/W
R/W
0
0
This bit decide flash continuous programming mode. Set to 1, if programming
continuous mode is same as the SST flash. Set to 0 if programming continuous
mode is same as the ATMEL flash
6
IO_SPI
This bit control SPI function transfer 8 bit command to device. Clear 0 by
operation finish.
96
July, 2008
V.28P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
