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參數(shù)資料
| 型號： | SII3531A |
| 廠商： | Silicon Image, Inc. |
| 英文描述： | PCI Express to Serial ATA Controller |
| 中文描述： | PCI Express到串行ATA控制器 |
| 文件頁數(shù)： | 24/81頁 |
| 文件大小： | 553K |
| 代理商： | SII3531A |
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PCI Express to Serial ATA Controller
Data Sheet
5.3.3 The Scatter/Gather Table (SGT)
The SGT is simply a contiguous collection of four SGEs. The PRB contains two SGEs. When more than two SGEs are
required to fully define the entire data transfer of a command, the SiI3531A fetches additional SGEs in groups of four at a time,
or one SGT. The SGT occupies the upper 64 bytes of a command slot in SiI3531A RAM. When needed, only one SGT
resides in RAM at a time. The SiI3531A fetches each required SGT, overwriting the previous SGT in RAM. Since the first two
SGEs reside in the PRB RAM area, they are always available in case the SiI3531A needs to rescan the scatter/gather list for
out of order data delivery.
SGTs must reside on a quadword (64-bit) naturally aligned boundary in host memory. In other words, bits[2:0] of the physical
address of the SGT in host memory must be zero.
31
SGE0 Data Address Low
SGE0 Data Address High
SGE0 Data Count
SGE0 TRM
SGE0 LNK
SGE0 DRD
SGE0 XCF
SGE1 Data Address Low
SGE1 Data Address High
SGE1 Data Count
SGE1 TRM
SGE1 LNK
SGE1 DRD
SGE1 XCF
SGE2 Data Address Low
SGE2 Data Address High
SGE2 Data Count
SGE2 TRM
SGE2 LNK
SGE2 DRD
SGE2 XCF
SGE3 Data Address Low
SGE3 Data Address High
SGE3 Data Count
SGE3 TRM
SGE3 LNK
SGE3 DRD
SGE3 XCF
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0208-C
24
0
0x00
0x04
0x08
0x0C
0x10
0x14
0x18
0x1C
0x20
0x24
0x28
0x2C
0x30
0x34
0x38
0x3C
Reserved[27:0]
Reserved[27:0]
Reserved[27:0]
Reserved[27:0]
Table 5-2 Scatter/Gather Table (SGT)
5.3.4 The Port Request Block (PRB)
The host builds a PRB to define a command to be executed by the SiI3531A. The PRB occupies the first 64 bytes of a
command slot in SiI3531A RAM. Once a command is issued, the PRB is overwritten in SiI3531A RAM as necessary to keep
track of command context and execution status. The host should not depend on being able to read the contents of the PRB in
slot RAM after command issuance. Upon command execution completion, the PRB area of the command slot may contain
status information that can be read by the host, dependent upon the command type. The PRB structure can take several
forms, dependent upon the command type that it defines.
The PRB contains the following major elements:
A Control Field to indicate the type of PRB and any features to execute.
A Protocol Override field used to optionally alter the normal SATA protocol flow.
A FIS area that contains the initial FIS to be transmitted to the device upon PRB execution.
Up to two Scatter/Gather entries (SGEs) to define areas of host memory that will be used for any data transfer
associated with the PRB. For PACKET commands, the first SGE contains the 12 or 16-byte ATAPI command to
be transmitted to the device.
Regardless of whether the command is to be issued with the direct or indirect method, the host driver should build the PRB as
a structure in host memory. If the command is to be issued using the direct issuance method, the PRB can be copied from
host RAM to the appropriate slot in SiI3531A RAM. If the command is to be issued using the indirect method, the host driver
should write the physical address of the PRB to the command activation register associated with the desired command slot.
The PRB must reside on a quadword (64-bit) naturally aligned boundary in host memory. In other words, bits[2:0] of the
physical address of the PRB in host memory must be zero.
相關(guān)PDF資料 |
PDF描述 |
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| SiI3531ACNU | PCI Express to Serial ATA Controller |
| SII3531 | SteelVine⑩ Host Controller |
| SII3611 | SATALink Device Bridge |
| SII3726 | SATA Port Multiplier |
| SiI3726CB | SATA Port Multiplier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SII3531ACNU | 制造商:Silicon Image Inc 功能描述:PCI Express to Serial ATA Controller 48-Pin QFN EP |
| SII3611 | 制造商:SILICONIMAGE 制造商全稱:SILICONIMAGE 功能描述:SATALink Device Bridge |
| SII3611CT80-1.5 | 制造商:SILICON IMAGE 功能描述:3611CT80-1.5 |
| SII3723 | 制造商:SILICONIMAGE 制造商全稱:SILICONIMAGE 功能描述:Third Generation SATA Port Multiplier Storage Processor |
| SiI3723CNU | 制造商:Silicon Image Inc 功能描述: |
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