Virtex-5 PCIe block plus User Guide (UG341) describes only "000b" encoding for cfg_interrupt_mmenable signal. This answer record contains the description of other encoding values for this cfg_interrupt_mmenable signal.
For encoding values other than "000b", please refer to 6.8.1.3 Message Control for MSI of the PCI Local BUS SPECIFICATION, REV. 3.0.
| Encoding | # of Vectors Allocated |
|---|---|
| 000 | 1 |
| 001 | 2 |
| 010 | 4 |
| 011 | 8 |
| 100 | 16 |
| 101 | 32 |
| 110 | Reserved |
| 111 | Reserved |
Revision History:
4/3/2012 - Initial Release
| Answer Number | Answer Title | Version Found | Version Resolved |
|---|---|---|---|
| 34536 | Xilinx Solution Center for PCI Express | N/A | N/A |
| AR# 47109 | |
|---|---|
| Date | 08/30/2013 |
| Status | Active |
| Type | General Article |
| Devices | |
| IP | |