SiI3114 PCI to Serial ATA Controller
Data Sheet
Silicon Image, Inc.
Subsystem ID – Subsystem Vendor ID
Address Offset: 2CH
Access Type: Read/Write
Reset Value: 0x3114_1095
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Subsystem ID
Subsystem Vendor ID
This register defines the Subsystem ID fields associated with the PCI bus. The register bits are defined below.
• Bit [31:16]: Subsystem ID (R) – Subsystem ID. The value in this bit field is determined by any one of three
options:
1) The default value of 0x3114
2) Loaded from an external memory device: If an external memory device — flash or EEPROM — is
present with the correct signature, the Subsystem ID is loaded from that device after reset. See “Auto-
Initialization” section on page 22 for more information.
3) System programmable: If Bit 0 of the Configuration register (40H) is set the two bytes are system
programmable.
• Bit [15:00]: Subsystem Vendor ID (R) – Subsystem Vendor ID. The value in this bit field is determined by
any one of three options:
1) The default value of 0x1095
2) Loaded from an external memory device : If an external memory device – Flash or EEPROM – is
present with the correct signature, the Subsystem Vendor ID is loaded from that device after reset. See
“Auto-Initialization” section on page 22 for more information.
3) System programmable: If Bit 0 of the Configuration register (40H) is set the two bytes are system
programmable.
Expansion ROM Base Address
Address Offset: 30H
Access Type: Read/Write
Reset Value: 0x0000_0000
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Expansion ROM Base Address
000_0000_0000_0000_000
This register defines the Expansion ROM base address associated with the PCI bus. The register bits are defined
below.
• Bit [31:19]: Expansion ROM Base Address (R/W) – Expansion ROM Base Address. This bit field defines
the upper bits of the Expansion ROM base address.
• Bit [18:01]: Not Used (R). This bit field is hardwired to 00000H. The minimum Expansion ROM address
range is 512K bytes.
• Bit [00]: Exp ROM Enable (R/W) – Expansion ROM Enable. This bit is set to enable the Expansion ROM
access.
© 2007 Silicon Image, Inc.
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SiI-DS-0103-D
SILICONIMAGE [ Silicon image ]
