EW31244SL7QV Datasheet, PDF (44/252 Pages) Intel Corporation – Intel® 31244 PCI-X to Serial ATA Controller

Intel^® 31244 PCI-X to Serial ATA Controller
Serial EEPROM
Table 15. Write and Read Command Types
Command Type
inst [7:0]
ctrl [1:0]
data [15:0]
Description
Write
WREN
06h
WRDI
04h
WRSR
01h
PROGRAM ^†
02h
SECT_ERASE
52h
-
-
-
-
a [16:15]
-
-
{XX, status [7:0]}
-
-
Write Enable
Write Disable
Write Status
Write Data
Erase 1/4 Chip
CHIP_ERASE
62h
-
-
Erase All Chip
Read
RDSR
05h
-
{00h, status [7:0]}
Read Status
READ ^†
03h
-
-
Read Data
RDID
15h
-
601Fh
Read ID
† The PROGRAM and READ commands are done through the expansion ROM port of the PCI device. All other
commands are done through the configuration register set.
The RDID value is for the Atmel* 25F1024 device. Other devices will have different values.
The legal values for the PCI byte enables on read and write operations are presented in Table 16.
Table 16.
PCI Byte Enables on Read and Write Operations
byte_enables_n
3210
1110
1101
1011
0111
1100
0011
0000
count
1
1
1
1
2
2
4
a [1:0]
0
1
2
3
0
2
0
44
April 2004
Developer’s Manual