S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 62

• Manufacturer Part Number: S5920Q
• Manufacturer: Applied Micro Circuits Corporation

Specifications of S5920Q

• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Operating Temperature (max): 70C
• Package Type: PQFP
• Rad Hardened: No
• Lead Free Status / Rohs Status: Not Compliant

S5920 – PCI Product: PCI Configuration Registers
Table 37. Read Response (I/O Assigned) to an All-Ones Write Operation to a Base Address Register
1. Base Address Register 0, at offset 10h, powers up as FFFFFF81h. This default assignment allows usage without an external boot memory.
AMCC Confidential and Proprietary
00000000h
FFFFFFFDh
FFFFFFF9h
FFFFFFF1h
FFFFFFE1h
FFFFFFC1h
FFFFFF81h
FFFFFF01h
Should an nvRAM be used, the base address can be boot loaded to become a memory space (FFFFFF80h or FFFFFF82h).
Response
none - disabled
4 bytes (1 DWORDs)
8 bytes (2 DWORDs)
16 bytes (4 DWORDs)
32 bytes (8 DWORDs)
64 bytes (16 DWORDs)
128 bytes (32 DWORDs)
256 bytes (64 DWORDs)
Size in Bytes
00000000h or BIOS missing
FFFFFFFDh
FFFFFFF9h
FFFFFFF1h
FFFFFFE1h
FFFFFFC1h
FFFFFF81h 1
FFFFFF01h
nvRAM boot value
Revision 1.02 – April 12, 2007
Data Book
DS1596
62