Avago Technologies LSI53C825AE - Manual (Page 86)

3-16 Signal Descriptions
•
MAD[3:1] – used to set the size of the external expansion ROM
device attached. Encoding for these pins are listed in
Table 3.13 .
Table 3.11 Subsystem Data Configuration Table for the LSI53C825AE
(PCI Rev ID 0x26)
Mode MAD Pins Offset
Normal
4-hi, 6-hi
Read/Write
4-hi, 6-lo
Reserved
4-low, 6-hi
LSI Logic
4-low, 6-lo
Vendor ID 0x00 0x1000 0x1000 – 0x1000
Device ID 0x02 0x000F 0x000F – 0x000F
Subsystem Vendor ID 0x2C 0x1000 0x0000 – 0x0000
Subsystem ID 0x2E 0x1000 0x0000 – 0x0000
Table 3.12 Subsystem Data Configuration Table for the LSI53C825A (PCI Rev ID 0x14)
Revision G Only
1
1. The chip revisions before Revision G of the LSI53C825A (PCI Rev ID 0x14) do not support different
Subsystem Data Configurations. The Subsystem ID (SSID) and Subsystem Vendor ID (SSVID)
registers are hardwired to zero values.
Mode MAD Pins Offset
Normal
4-hi, 6-hi
Read/Write
4-hi, 6-lo
Reserved
4-low, 6-hi
LSI Logic
4-low, 6-lo
Vendor ID 0x00 0x1000 0x1000 – 0x1000
Device ID 0x02 0x000F 0x000F – 0x000F
Subsystem Vendor ID 0x2C 0x0000 0x0000 – 0x1000
Subsystem ID 0x2E 0x0000 0x0000 – 0x1000