
6–6 Chapter 6: XAUI PHY IP Core
Analog Parameters for Arria II GX, Cyclone IV GX, HardCopy IV and Stratix IV Devices
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
Analog Parameters for Arria II GX, Cyclone IV GX, HardCopy IV and
Stratix IV Devices
Arria II GX, Cyclone IV GX, and Stratix IV devices, you specify analog options on the
Analog Options tab. Table 6–5 describes these options.
Table 6–5. PMA Analog Options
Name Value Description
Transmitter termination
resistance
OCT_85_OHMS
OCT_100_OHMS
OCT_120_OHMS
OCT_150_OHMS
Indicates the value of the termination resistor for the transmitter.
Transmitter VOD control setting 0–7 Sets V
OD
for the various TX buffers.
Pre-emphasis pre-tap setting 0–7
Sets the amount of pre-emphasis on the TX buffer. Available for
Stratix IV
Invert the pre-emphasis pre-tap
polarity setting
On
Off
Determines whether or not the pre-emphasis control signal for the
pre-tap is inverted. If you turn this option on, the pre-emphasis
control signal is inverted. Available for HardCopy IV and Stratix IV
devices.
Pre-emphasis first post-tap
setting
0–15 Sets the amount of pre-emphasis for the 1st post-tap.
Pre-emphasis second post-tap
setting
0–7
Sets the amount of pre-emphasis for the 2nd post-tap. Available
for HardCopy IV and Stratix IV devices.
Invert the pre-emphasis second
post-tap polarity
On
Off
Determines whether or not the pre-emphasis control signal for the
second post-tap is inverted. If you turn this option on, the
pre-emphasis control signa is inverted. Available for HardCopy IV
and Stratix IV devices.
Receiver common mode voltage
Tri-state
0.82V
1.1v
Specifies the RX common mode voltage.
Receiver termination res
istance
OCT_85_OHMS
OCT_100_OHMS
OCT_120_OHMS
OCT_150_OHMS
Indicates the value of the termination resistor for the receiver.
Cyclone IV supports 100 and 150.
Receiver DC gain 0–4
Sets the equalization DC gain using one of the following settings:
■ 0–0 dB
■ 1–3 dB
■ 2–6 dB
■ 3–9 dB
■ 4–12 dB
Receiver static equalizer setting: 0–15
This option sets the equalizer control settings. The equalizer uses a
pass band filter. Specifying a low value passes low frequencies.
Specifying a high value passes high frequencies. Available for
HardCopy IV and Stratix IV devices.
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