
Chapter 12: Stratix V Transceiver Native PHY IP Core 12–5
PMA Parameters
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
PMA Parameters
Table 12–3 describes the options available for the PMA.
f For more information about the PMA, refer to the PMA Architecture section in the
Transceiver Architecture in Stratix 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 the
Stratix V Device Datasheet for specific data for Stratix V
devices.
Table 12–3. PMA Options
Parameter Range Description
Data rate Device Dependent Specifies the data rate.
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.
TX PLL base data rate Device Dependent
Specifies the base data rate for the clock input to the TX PLL.
Select a base data rate that minimizes the number of PLLs
required to generate all the clocks required for data transmission.
By selecting an appropriate base data rate, you can change data
rates by changing the divider used by the clock generation block.
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.
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