IPR-PCIE/8 Altera, IPR-PCIE/8 Datasheet - Page 192

• Manufacturer Part Number: IPR-PCIE/8
• Description: IP CORE Renewal Of IP-PCIE/8
• Manufacturer: Altera
• Type: MegaCorer

Specifications of IPR-PCIE/8

• Software Application: IP CORE, Interface And Protocols, PCI
• Supported Families: Arria GX, Cyclone II, HardCopy II, Stratix II
• Core Architecture: FPGA
• Core Sub-architecture: Arria, Cyclone, Stratix
• Rohs Compliant: NA
• Function: PCI Express Compiler, x8 Link Width
• License: Renewal License
• Lead Free Status / RoHS Status: na
• Lead Free Status / RoHS Status: na

BFM Procedures and Functions
5–42
PCI Express Compiler User Guide
The ebfm_disp_perf_sample procedure displays scaled versions of
these counters to the standard output. These values are displayed as a
sum across all of the Virtual Channels. The ebfm_disp_perf_sample
also resets the counters to 0, which effectively starts the next performance
sample.
Typically a performance measurement routine calls
ebfm_start_perf_sample at the time when performance analysis
should begin. Then ebfm_disp_perf_sample can be called at the end
of the performance analysis time given the aggregate numbers for the
entire performance analysis time. Alternatively,
ebfm_disp_perf_sample could be called multiple times during the
performance analysis window to give a more precise view of the
performance. The aggregate performance numbers would need to be
calculated by post-processing of the simulator standard output.
BFM Read/Write Request Procedures
ebfm_start_perf_sample Procedure
This procedure simply resets the performance counters. The procedure
waits until the next Root Port BFM clock edge to ensure the counters are
synchronously reset. Calling this routine effectively starts a performance
sampling window.
PCI Express Compiler Version 6.1
Altera Corporation
December 2006