Keysight Technologies U4305A, Руководство по оборудованию

Страница: 13 / 22

Keysight Protocol Exerciser for PCI Express Hardware Guide 13
U4305A Exerciser Card 1
Features
This topic describes the features of the U4305A/U4305B exerciser card.
• It is a standard height, half-length card as described in the PCI Express specification, and fits into
every system including blade servers.
• It supports LTSSM functions for upto x16 link widths.
• It supports simultaneous use of LTSSM and Protocol Exerciser functions, without requiring any
configuration.
• It supports Gen1 (2.5 GT/s), Gen2 (5.0 GT/s), and Gen3 (8.0 GT/s) speeds as per PCIe
specifications.
• It provides non IOV, SRIOV, and MRIOV capabilities based on the licensed options.
• It supports NVMe root complex and endpoint emulation capabilities based on the licensed
options.
• You can manage, control, and use it using the Protocol Exerciser GUI and APIs.
NOTE
The U4305B model of Exerciser supports L1.1 and L1.2 L1 substates in both the ASPM and
PCI-PM L1 Link states. This feature is not supported by the U4305A model.
The U4305B model uses a per-Link signal called Reference Clock Request CLKREQ# (Pin B12
of PCIe connector) for L1 substates management. Exerciser or the link partner can request a
clock power off using this signal. When the reference clock of both the link partners is
switched off, the link can go to an L1 substate.