
PCI Express to Serial ATA Controller
Data Sheet
Silicon Image, Inc.
2006 Silicon Image, Inc.
SiI-DS-0208-C
52
6.1.21 Link Status and Control
Address Offset: 80H
Access Type: Read/Write
Reset Value: 0x0011_0000 or 0x1011_0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Reserved
Slot
Clk
Config
Link
Training
Link
Train
Err
Negotiated Link Width
Link Speed
Reserved
Ext
Syn
c
h
Comm
Clk
Cfg
Retrain
Link
Disab
le
RCB
R
eser
v
ed
A
SPM
C
ont
rol
Bit [31:29,15:08,02]: Reserved (R) – These bits are reserved and return zero on a read.
Bit [28]: Slot Clk Config (R) – Slot Clock Configuration. This bit is 1 if the reference clock is detected.
Bit [27]: Link Training (R) –This bit is hardwired to 0.
Bit [26]: Link Train Err (R) – This bit is hardwired to 0.
Bit [25:20]: Negotiated Link Width (R) – This bit field is hardwired to 000001B.
Bit [19:16]: Link Speed (R) – This bit field is hardwired to 0001B.
Bit [07]: Ext Synch (R/W) – Extended Synch.
Bit [06]: Comm Clk Cfg (R/W) – Common Clock Configuration.
Bit [05]: Retrain Link (R) – This bit is hardwired to 0.
Bit [04]: Link Disable (R) – This bit is hardwired to 0.
Bit [03]: RCB (R/W) – Read Completion Boundary.
Bit [01:00]: ASPM Control (R/W)
6.1.22 Global Register Offset
Address Offset: F0H
Access Type: Read/Write
Reset Value: 0x0000_0000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Reserved
Dword Offset
00
This register provides indirect addressing of a Global Register otherwise accessible directly via Base Address Register 0. The
Dword address offset for an indirect access is in bits 6 to 2; bits 31 to 7, 1, and 0 are reserved and should always be 0.
Note that this is physically the same register as that addressed by Base Address Register 2, Offset 00H.
6.1.23 Global Register Data
Address Offset: F4H
Access Type: Read/Write
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
As defined for indirectly accessed register
This register provides the indirect access addressed by the Global Register Offset register.