Teledyne-lecroy SimPASS PE PCI Express Software User Manual Bedienungsanleitung Seite 110

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Appendix A: Configuration Space Decoding SimPASS PE Software User Manual
104 LeCroy Corporation
A.3 Configuration Register Types
The following reserved variables are defined global constants.
CFGREG_UNDEFINED
CFGREG_HWINIT
CFGREG_RO
•CFGREG_RW
•CFGREG_RW1C
CFGREG_ROS
•CFGREG_RWS
•CFGREG_RW1CS
CFGREG_RSVDP
CFGREG_RSVDZ
Note: These reserved variables match the Configuration Register Types of Table 7-2 in
Section 7.4 of the PCI Express Base Specification, Rev. 2.1.
A.4 Primitives
Decoding uses the following primitives.
GetRegisterField( dword_offset, bit_offset, field_length )
This function returns a register field of length field_length, starting at bit position
bit_offset in DWORD dword_offset.
dword_offset: DWORD offset of the register field location
bit_offset: Bit offset of the register field location
field_length: Length of the register field
For example, GetRegisterField( 1, 9, 2 ); means: Go to DWORD 1, bit offset 9, and
returns 2 bits.
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