Altera UG-01080 Betriebsanweisung Seite 31

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Chapter 3: 10GBASE-R PHY IP Core 3–9
Analog Parameters
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Analog Parameters
Click on the appropriate link to specify the analog options for your device:
Analog Settings for Arria V Devices
Analog Settings for Arria V GZ Devices
Analog Parameters for Stratix IV Devices
Analog Settings for Stratix V Devices
Analog Parameters for Stratix IV Devices
For Stratix IV devices, you specify analog options on the Analog Options tab.
Table 39 describes these options.
Table 3–9. PMA Analog Options for Stratix IV Devices
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.
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.
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.
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.
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.
Receiver DC 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.
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