參數(shù)資料
型號： SII3124ACBHU
元件分類： 總線控制器
英文描述： PCI BUS CONTROLLER, PBGA364
封裝： 21 X 21 MM, 1 MM PITCH, GREEN, BGA-364
文件頁數(shù)： 44/88頁
文件大?。?/td> 592K
代理商： SII3124ACBHU
PCI-X to Serial ATA Controller
Data Sheet
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0160-C
49
6.2 Auto-Initialization from EEPROM
The SiI3124 initiates the EEPROM detection and configuration space loading sequence after the Flash read sequence. The
SiI3124 supports EEPROMs with an I
2C serial interface. The sequence of operations consists of the following.
1)
START condition defined as a high-to-low transition on I2C_SDAT while I2C_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 SiI3124 responds to all PCI bus accesses with a Target Retry.
FL_CS_N
I2C_SCLK
I2C_SDAT
t
1
t
2
S
1
0
1
00
W
P
AN
DDD
t
3
Figure 6-2 Auto-Initialization from EEPROM Timing
Parameter
Value
Description
t1
26.00
μs
End of Auto-Initialization from Flash to start of
Auto-Initialization from EEPROM
t2
1.6 ms
Auto-Initialization from EEPROM cycle time
t3
10
μs
EEPROM serial clock period
Table 6-3 Auto-Initialization from EEPROM Timing
Parameter
Description
S
START condition
W
R/W 0 = Write Command, 1 = Read Command
A
Acknowledge
D
Serial data
N
No-Acknowledge
P
STOP condition
Table 6-4 Auto-Initialization from EEPROM Timing Symbols
Address
Data Byte
Description
00H
D00
Memory Present Pattern = AAH
01H
D01
Memory Present Pattern = 55H
02H
D02
Data Signature = AAH
03H
D03
Data Signature = 55H
04H
D04
PCI Device ID [23:16]
05H
D05
PCI Device ID [31:24]
06H
D06
PCI Class Code [23:16]
07H
D07
PCI Class Code [15:08]
08H
D08
PCI Sub-System Vendor ID [07:00]
09H
D09
PCI Sub-System Vendor ID [15:08]
0AH
D10
PCI Sub-System ID [23:16]
0BH
D11
PCI Sub-System ID [31:24]
Table 6-5 EEPROM Data Description
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