V-Series Transceiver PHY IP Core User Guide

ID 683171
Date 7/26/2022
Document Table of Contents

16.5. PMA Parameters

This section describes the options available for the PMA.

For more information about the PMA, refer to the PMA Architecture section in the Transceiver Architecture in Cyclone V Devices. Some parameters have ranges where the value is specified as Device Dependent. For such parameters, the possible range of frequencies and bandwidths depends on the device, speed grade, and other design characteristics. Refer to Device Datasheet for Cyclone V Devices for specific data for Cyclone V devices.

Table 297.  PMA Options  




Data rate

Device Dependent

Specifies the data rate. The maximum data rate is 6.144 Gbps.

TX local clock division factor

1, 2, 4, 8

Specifies the value of the divider available in the transceiver channels to divide the input clock to generate the correct frequencies for the parallel and serial clocks. This divisor divides the fast clock from the PLL in nonbonded configurations.

PLL base data rate

Device Dependent

Shows the base data rate of the clock input to the TX PLL.The PLL base data rate is computed from the TX local clock division factor multiplied by the data rate.

Select a PLL base data rate that minimizes the number of PLLs required to generate all the clocks for data transmission. By selecting an appropriate PLL base data rate, you can change data rates by changing the TX local clock division factor used by the clock generation block.

Did you find the information on this page useful?

Characters remaining:

Feedback Message