S5920Q Applied Micro Circuits Corporation, S5920Q Datasheet - Page 60
S5920Q
Manufacturer Part Number
S5920Q
Description
Manufacturer
Applied Micro Circuits Corporation
Datasheet
1.S5920Q.pdf
(165 pages)
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
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S5920 – PCI Product: PCI Configuration Registers
Figure 18. Base Address Register - I/O
AMCC Confidential and Proprietary
31:2
Bit
1
0
31
Base Address Location. These bits are used to position the decoded region in I/O space. Only bits which return
a 1 after being written as 1 are usable for this purpose. Except for Base Address 0, these bits are individually
enabled by the contents sourced from the external nvRAM.
Reserved. This bit should be 0. (Note: disabled Base Address Registers will return all 0s for the entire register
location, bits 31 through 0).
Space Indicator = 1. When 1, this bit identifies a base address region as an I/O space and the remaining bits in
the base address register have the definition as shown in Figure 18.
Base Address
Description
2
1
0
0
1
Revision 1.02 – April 12, 2007
Bit
Value
I/O Space
Indicator (RO)
Reserved (RO)
Programmable (R/W)
Data Book
DS1596
60
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