LSI LSI53C895A, Technical Manual

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4-18 Registers
Register: 0x46
Bridge Support Extensions (PMCSR_BSE)
Read Only
BSE Bridge Support Extensions [7:0]
This register indicates PCI Bridge specific functionality.
The LSI53C895A does not support extensions and
always returns 0x00.
Register: 0x47
Data
Read Only
DATA Data [7:0]
This register provides an optional mechanism for the
function to report state-dependent operating data. The
LSI53C895A does not use this register and always
returns 0x00.
Registers: 0x48–0x4B
Subsystem ID Access
Write Only
SIDA Subsystem ID Access [31:0]
The Subsystem ID Access register is the PCI
configuration space at offset 0x48–0x4B. Once enabled
and unlocked, this register can be used to shadow
Subsystem Vendor ID/Subsystem ID data into the
appropriate PCI Subsystem registers, thus eliminating the
need for a serial EEPROM to store the data. For
7 0
BSE
0 0 0 0 0 0 0 0
7 0
DATA
0 0 0 0 0 0 0 0
31 0
SIDA
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1