參數(shù)資料
型號: SII0680A
廠商: Silicon Image, Inc.
英文描述: PCI to IDE/ATA
中文描述: PCI到IDE / ATA的
文件頁數(shù): 44/124頁
文件大?。?/td> 820K
代理商: SII0680A
SiI0680A PCI to IDE/ATA
Data Sheet
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0069-C
44
Address
Data Byte
Description
7FFFF
H
D00
Data Signature = AA
H
7FFFE
H
D01
Data Signature = 55
H
7FFFD
H
D02
AA = 120 ns FLASH device / Else, 240 ns FLASH device
7FFFC
H
D03
Data Signature = 55
H
7FFFB
H
D04
PCI Device ID [23:16]
7FFFA
H
D05
PCI Device ID [31:24]
7FFF9
H
D06
PCI Class Code [15:08]
7FFF8
H
D07
PCI Class Code [23:16]
7FFF7
H
D08
PCI Sub-System Vendor ID [07:00]
7FFF6
H
D09
PCI Sub-System Vendor ID [15:08]
7FFF5
H
D10
PCI Sub-System ID [23:16]
7FFF4
H
D11
PCI Sub-System ID [31:24]
Table 8-2: FLASH Data Description
8.2 Auto-Initialization from EEPROM
The SiI 0680A initiates the EEPROM detection and configuration space loading sequence after the FLASH read sequence.
The SiI 0680A supports up to 256 byte EEPROM with a 2-wire serial interface. The sequence of operations consists of the
following.
1) START condition defined as a high-to-low transition on SDAT while SCLK is high.
2) Control byte = 1010 (Control Code) + 000 (Chip Select) + 0 (Write Address)
3) Acknowledge
4) Starting address field = 00000000.
5) Acknowledge
6) Sequential data bytes separated by Acknowledges.
7) STOP condition.
While the sequence is active, the SiI 0680A responds to all PCI bus accesses with a Target Retry.
MEM_CS_N
SCLK
SDAT
t
1
t
2
S
1
0
1
0
0
0
0
W
P
A
N
D
D
D
t
3
Figure 8-2: Auto-Initialization from EEPROM Timing
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