The Capabilites settings are explained in this section as shown in the following figure.
Figure 1. Capabilities Tab
- Total Physical Functions
- Enables you to select the number of physical functions. The number of physical functions supported is 4.
- PFx Max Payload Size
- This field indicates the maximum payload size that the device or function can support for TLPs. This is the value advertised to the system in the Device Capabilities Register.
- Extended Tag Field
- This field indicates the maximum supported size of the Tag
field. The options are:
- When selected, 8-bit Tag field support (256 tags)
- When deselected, 5-bit Tag field support (32 tags)
- Enable Slot Clock Configuration
- Enables the Slot Clock Configuration bit in the Link Status register.
- When this option is selected, the link is synchronously clocked.
- When this option is deselected, asynchronous clock in SRNS mode is supported. SRNS refers to a separate reference clock with No SSC (an asynchronous clock without SRIS support).