
SiI3726 SATA Port Multiplier
Data Sheet
Internal Register Space
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0121-C1
12
The SiI 3726 SATA Port Multiplier has 32-bit wide registers that control its internal operations.
General Status and Control (GSCR) Registers
These registers are defined in the SATA II Port Multiplier specification.
The Read/Write Port Multiplier command is used to read or write the GSCR registers. Address 0x0F must be
specified in the PortNum field of the command FIS in order to read or write the GSCR. The Read/Write Port
Multiplier commands are defined in the SATA II Port Multiplier Specification.
Addr
Name
31
30
0x00
GSCR[00]
Identifier
29
28
27
26
25
24
Device ID
20
Device ID
12
Vendor ID
4
Vendor ID
Description
23
22
21
19
18
17
16
15
14
13
11
10
9
8
7
6
5
3
2
1
0
Product
Bit
This register defines the Device ID and Vendor ID associated with the SiI 3726.
31:16
Device ID
R
The default value of 0x3726 identifies the device as Silicon Image
SiI3726.
15:0
Vendor ID
R
This field defaults to 0x1095 to identify the vendor as Silicon Image.
Label
R/W
Default
0x3726
0x1095
Addr
0x01
GSCR[01]
Name
31
30
29
28
27
26
25
24
RSVD0
23
22
21
20
19
18
17
16
RSVD0
15
14
13
12
11
10
9
8
Revision ID/Chip Revision ID
4
RSVD0
Description
7
6
5
3
2
1
0
Revision
Information
PM spec
RSVD0
Default
Bit
This register defines the revision ID associated with the SiI3726
.
31:16
RSVD0
R
15:8
Revision
ID/Chip
Revision
ID
7:3
RSVD0
R
2:1
PM spec
R
Label
R/W
This bit field is reserved and returns a zero value.
This bit field is set to indicate the revision level of the chip design, revision
0x17 is defined by this specification.
0x0000
0x17
R
This bit field is reserved and returns a zero value.
This register defines the Port Multiplier Specification Supports. This bit
field is set to 0x11 to indicate that SiI 3726 supports the Port Multiplier
Specification and 1.1.
This bit field is reserved and returns a zero value.
0b00000
0b00
0
RSVD0
R
0b0