Altera UG-01080 Guía de usuario Pagina 457

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Chapter 19: Migrating from Stratix IV to Stratix V Devices 19–3
Differences Between XAUI PHY Parameters for Stratix IV and Stratix V Devices
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Differences Between XAUI PHY Parameters for Stratix IV and Stratix V
Devices
Table 192 lists the XAUI PHY parameters and the corresponding ALTGX
megafunction parameters.
Table 19–2. Comparison of ALTGX Megafunction and XAUI PHY Parameters
ALTGX Parameter Name (Default Value) XAUI PHY Parameter Name Comments
Number of channels Number of XAUI interfaces
In Stratix V devices, this
parameter is locked to 1 (for
4 channels). You cannot
change it in the current
release.
Train receiver clock and data recover (CDR) from
pll_inclk (On)
Not available as parameters in
the MegaWizard Plug-In Manager
interface
Use assignment editor to
make these assignmentTX PLL bandwidth mode (Auto)
RX CDR bandwidth mode (Auto)
Acceptable PPM threshold between receiver CDR VCO
and receiver input reference clock (
1000)
Not available as parameters in
the MegaWizard Plug-In Manager
interface
Use assignment editor to
make these assignments
Analog power (Auto)
Loopback option (No loopback)
Enable static equalizer control (Off)
DC gain (0)
Receiver common mode voltage (0.82v)
Use external receiver termination (Off)
Receiver termination resistance (100 ohms)
Transmitter buffer power (1.5v)
Transmitter common mode voltage (0.65v)
Use external tran
smitter termination (Off)
Transmitter termination resistance (100 ohms)
VOD setting (4)
Preemphasis 1
st
post-tap (0)
Preemphasis pre-tap setting (0)
Preemphasis second post-tap setting (0)
Analog controls (Off)
Enable ADCE (Off) Not available as parameters in
the MegaWizard Plug-In Manager
interface
Not available in 10.0
Enable channel and transmitter PLL reconfig (Off)
Starting channel number (0) No longer required
Automatically set to 0. The
Quartus II software handles
lane assignments
Enable run length violation checking with run length of
(40)
Not available as parameters in
the MegaWizard Plug-In Manager
interface
Use assignment editor
Enable transmitter bit reversal (Off)
Word alignment pattern len
gth (10)
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