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Chapter 14: Arria V GZ Transceiver Native PHY IP Core 14–5
PMA Parameters
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
PMA Parameters
Table 143 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 Arria 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 Arria V Devices for specific data for Arria V
devices.
Bonding mode
Non–bonded
×6
fb_compensation
In Non–bonded mode, each channel is paired with a PLL. During
Quartus II compilation, the Fitter merges all PLLs that meet
merging requirements into a single PLL.
Select ×6 to use the same clock source for up to 6 channels in a
single transceiver bank, resulting in reduced clock skew. You
must use contiguous channels when you select ×6 bonding. In
addition, you must place logical channel 0 in either physical
channel 1 or 4. Physical channels 1 and 4 are indirect drivers of
the ×6 clock network.
Select fb_compensation (feedback compensation) to use the
same clock source for multiple channels across different
transceiver banks to reduce clock skew.
Enable simplified data interface On/Off
When you turn this option On, the Native PHY presents only the
relevant data bits. When you turn this option Off, the Native PHY
presents the full raw interface to the fabric. If you plan to
dynamically reconfigure the Native PHY, you must turn this
option Off and you need to understand the mapping of data to the
FPGA fabric. Refer to “Active Bits for Each Fabric Interface Width”
for more information. When you turn this option On, the Native
PHY presents an interface that includes only the data necessary
for the single configuration specified.
Table 14–2. General and Datapath Options (Part 2 of 2)
Name Range Description
Table 14–3. PMA Options (Part 1 of 2)
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.
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