參數(shù)資料
型號(hào)： SII3124A
廠商： Silicon Image, Inc.
英文描述： PCI-X to Serial ATA Controller
中文描述： PCI - X到串行ATA控制器
文件頁(yè)數(shù)： 49/88頁(yè)
文件大?。?/td> 621K
代理商： SII3124A
PCI-X to Serial ATA Controller
Silicon Image, Inc.
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
C 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.
Data Sheet
2006 Silicon Image, Inc.
SiI-DS-0160-C
49
FL_CS_N
I2C_SCLK
I2C_SDAT
t
1
t
2
S
1
0
1
0
0
0
0
W
P
A
N
D
D
D
t
3
Figure 6-2 Auto-Initialization from EEPROM Timing
Parameter
Value
Description
End of Auto-Initialization from Flash to start of
Auto-Initialization from EEPROM
Auto-Initialization from EEPROM cycle time
EEPROM serial clock period
t
1
26.00
μ
s
t
2
t
3
1.6 ms
10
μ
s
Table 6-3 Auto-Initialization from EEPROM Timing
Parameter
S
W
A
D
N
P
Description
START condition
R/W 0 = Write Command, 1 = Read Command
Acknowledge
Serial data
No-Acknowledge
STOP condition
Table 6-4 Auto-Initialization from EEPROM Timing Symbols
Address
00
H
01
H
02
H
03
H
04
H
05
H
06
H
07
H
08
H
09
H
0A
H
0B
H
Data Byte
D00
D01
D02
D03
D04
D05
D06
D07
D08
D09
D10
D11
Description
Memory Present Pattern = AA
H
Memory Present Pattern = 55
H
Data Signature = AA
H
Data Signature = 55
H
PCI Device ID [23:16]
PCI Device ID [31:24]
PCI Class Code [23:16]
PCI Class Code [15:08]
PCI Sub-System Vendor ID [07:00]
PCI Sub-System Vendor ID [15:08]
PCI Sub-System ID [23:16]
PCI Sub-System ID [31:24]
Table 6-5 EEPROM Data Description
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