SII3531A datasheet(29/81 Pages) SILICONIMAGE

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PCI Express to Serial ATA Controller

Data Sheet

Silicon Image, Inc.

SiI-DS-0208-C

The FIS area (offset 0x08 through 0x1f) must be populated with the initial FIS to be sent to the device. This area contains the

FIS header and all task file registers to describe the ATA command. Table 5-6 describes the FIS area fields.

Offset

Bit(s)

Name

Description

7:0

FIS Type

The FIS type field must be populated with a valid

SATA FIS type. In all but special custom cases

this value will be 0x27, which defines a “Register –

Host to Device” FIS type.

11:8

PMP

4-bit Port Multiplier Port field that defines the port

to which this command will be directed. If no port

multiplier is attached, this field should be

populated with all zeros

14:12

Reserved

Must be zero.

Command/Device Control

This bit must be set to one to indicate that this FIS

contains a command.

23:16

Task File Command

Populate with the desired ATA command type.

0x08

31:24

Features

Populate with the desired features for this ATA

command.

7:0

Sector Number (LBA[7:0])

15:8

Cylinder Low (LBA[15:8])

23:16

Cylinder High (LBA[23:16])

0x0c

31:24

Device/Head (LBA[27:24] for non-

extended commands)

These fields should be populated with desired

command-specific parameters.

7:0

Sector Number (Exp.) (LBA[31:24]

for extended commands)

15:8

Cylinder Low (Exp.) (LBA[39:32] for

extended commands)

23:16

Cylinder High (Exp.) (LBA[47:40] for

extended commands)

0x10

31:24

Features (Exp.)

These fields should be populated with desired

command-specific parameters.

7:0

Sector Count

15:8

Sector Count (Exp.)

23:16

Reserved

0x14

31:24

Device Control

These fields should be populated with desired

command-specific parameters. The Reserved

field must be zero for standard ATA commands

that use the “Register –Host to Device” FIS to

initiate a command.

0x18

31:0

Reserved

This field is reserved and must be zero for

standard ATA commands that use the “Register –

Host to Device” FIS to initiate a command.

Table 5-6 PRB FIS Area Definition

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