参数资料
型号: SII3114CT176
元件分类: 总线控制器
英文描述: PCI BUS CONTROLLER, PQFP176
封装: TQFP-176
文件页数: 52/127页
文件大小: 564K
代理商: SII3114CT176
SiI3114 PCI to Serial ATA Controller
Data Sheet
Silicon Image, Inc.
SiI-DS-0103-D
22
2007 Silicon Image, Inc.
Auto-Initialization
The SiI3114 supports an external flash and/or EEPROM device for BIOS extensions and user-defined PCI
configuration header data.
Auto-Initialization from Flash
The SiI3114 initiates the flash detection and configuration space loading sequence upon the release of
PCI_RST_N. It begins by reading the highest two addresses (7FFFFH and 7FFFEH), checking for the correct data
signature pattern — AAH and 55H, respectively. If the data signature pattern is correct, the SiI3114 continues to
sequence the address downward, reading a total of sixteen bytes. If the Data Signature is correct (55H at
7FFFCH), the last twelve bytes are loaded into the PCI Configuration Space registers.
Note:
If both flash and EEPROM are installed, the PCI Configuration Space registers will be loaded with the
EEPROM’s data.
While the sequence is active, the SiI3114 responds to all PCI bus accesses with a Target Retry.
D15
D14
D05
D04
D03
D02
D01
D00
FL_ADDR
MEM_ADDR
FL_DATA
FL_RD_N
FL_WR_N
FL_CS_N
PCI_RST_N
t1
t2
7FFFF
7FFFE
7FFFD
7FFFC
7FFFB
7FFFA
7FFF1
7FFF0
Figure 8. Auto-Initialization from Flash Timing
Table 11. Auto-Initialization from Flash Timing
Parameter
Value
Description
t1
660 ns
PCI reset to Flash Auto-Initialization cycle begin
t2
9600 ns
Flash Auto-Initialization cycle time
Table 12. Flash Data Description
Address
Data Byte
Description
7FFFFH
D00
Data Signature = AAH
7FFFEH
D01
Data Signature = 55H
7FFFDH
D02
AA = 120 ns flash device / Else, 240 ns flash device
7FFFCH
D03
Data Signature = 55H
7FFFBH
D04
PCI Device ID [23:16]
7FFFAH
D05
PCI Device ID [31:24]
7FFF9H
D06
PCI Class Code [15:08]
7FFF8H
D07
PCI Class Code [23:16]
7FFF7H
D08
PCI Sub-System Vendor ID [07:00]
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