Altera UG-01080 Guía de usuario Pagina 201

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Chapter 10: Low Latency PHY IP Core 10–3
General Options Parameters
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
1. For Which device family will you be using?, select Stratix V.
2. Click Installed Plug-Ins > Interfaces > Transceiver PHY >Low Latency PHY
v12.1.
3. Use the tabs on the MegaWizard Plug-In Manager to select the options required
for the protocol.
4. Refer to the following topics to learn more about the parameters:
a. General Options Parameters
b. Additional Options Parameters
c. PLL Reconfiguration Parameters
d. Analog Parameters
5. Click Finish to generate your parameterized Low Latency PHY IP Core.
General Options Parameters
Table 103 lists the settings available on General Options tab.
Table 10–3. Low Latency PHY General Options
Name Value Description
Device family Stratix V This IP core is only available for Stratix V devices.
Datapath type
Standard
10G
GT
The Low Latency PHY IP Core is part of a Standard, 10G, or GT
datapath. In most cases the FPGA fabric transceiver interface
width determines the bandwidth of the datapath; however, when
the FPGA fabric transceiver interface width is 32 or 40 bits, you
have the option of using either the Standard datapath which is
the default mode, or changing to the 10G datapath by selecting
this option. Refer to Table 10–4 for a comprehensive list of
datapath support.
Mode of operation
Duplex
RX
TX
Specifies the mode of operation as Duplex, RX, or TX mode.
Number of lanes
1
-
32
Specifies the total number of lanes in each direction. Stratix V
devices include up to 32 GX channels (Standard or 10G) and up
to 4 GT channels. You must instantiate each GT channel in a
separate Low Latency PHY IP Core instance. You cannot specify
both GX and GT channels within the same instance.
Enable lane bonding On/Off
When enabled, the PMA uses the same clock source for up to 6
channels in a transceiver bank, reducing clock skew.
Turn this option Off if you are using multiple TX PLLs in a single
Low Latency PHY IP Core instance.
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