
6–4 Chapter 6: XAUI PHY IP Core
General Parameters
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
General Parameters
Table 6–4 lists the settings available on General Options tab.
Table 6–4. General Options (Part 1 of 2)
Name Value Description
Device family
Arria II GX
Arria V
Arria V GZ
Cyclone IV GX
Cyclone V,
HardCopy IV
Stratix IV
Stratix V
The target device family.
Starting channel number 0–124
The physical starting channel number in the Altera device for channel
0 of this XAUI PHY. In Arria II GX, Cyclone IV GX, HardCopy IV, and
Stratix IV devices, this starting channel number must be 0 or a
multiple of 4.
In Arria V GZ and Stratix V devices, logical lane 0 should be assigned
to either physical transceiver channel 1 or channel 4 of a transceiver
bank. However, if you have already created a PCB with a different lane
assignment for logical lane 0, you can use the workaound shown in
Example 6–1 to remove this restriction.
Assignment of the starting channel number is required for serial
transceiver dynamic reconfiguration.
XAUI interface type
Hard XAUI
Soft XAUI
DDR XAUI
The following 3 interface types are available:
■ Hard XAUI–Implements the PCS and PMA in hard logic. Available
for Arria II, Cyclone IV, HardCopy IV, and Stratix IV devices.
■ Soft XAUI–Implements the PCS in soft logic and the PMA in hard
logic. Available for HardCopy IV, Stratix IV, Arria V, Cyclone V, and
Stratix V devices.
■ DDR XAUI–Implements the PCS in soft logic and the PMA in hard
logic. Both the application and serial interfaces run at twice the
frequency of the Soft XAUI options. Available for HardCopy IV
Stratix IV devices.
All interface types include 4 channels.
Data rate
Device
Dependent
Specifies the data rate.
PLL type
CMU
ATX
You can select either the CMU or ATX PLL. The CMU PLL has a larger
frequency range than the ATX PLL. The ATX PLL is designed to
improve jitter performance and achieves lower channel-to-channel
skew; however, it supports a narrower range of data rates and
reference clock frequencies. Another advantage of the ATX PLL is
that it does not use a transceiver channel, while the CMU PLL does.
This parameter is available for the soft PCS and DDR XAUI.
The ATX PLL is not available for all devices.
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