
Chapter 18: Analog Parameters Set Using QSF Assignments 18–3
Analog Settings for Arria V Devices
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Table 18–8 lists the analog parameters with global or computed default values. You may
want to optimize some of these settings. In Table 18–8, the default value is shown in
bold type. For computed analog parameters, the default value listed is for the initial
setting, not the recomputed setting. The parameters are listed in alphabetical order.
XCVR_TX_SLEW_RATE_CTRL
Transmitter Slew Rate
Control
Specifies the slew rate of the output
signal. The following encodings are
defined:
■ 1: SLEW_160PS
■ 2: SLEW_90PS
■ 3: SLEW_50PS
■ 4: SLEW_30PS
■ 5: SLEW_15PS
1–5
Pin -
TX serial
data
XCVR_VCCR_VCCT_VOLTAGE
VCCR_GXB
VCCT_GXB Voltage
Configures the VCCR_GXB and
VCCT_GXB voltage for an GXB I/O pin
by specifying the intended supply
voltages for a GXB I/O pin. This
voltage is fixed at 1_1V for all
frequency ranges.
Arria V GX:
1_1V
Arria V GT:
1_2V
Pin -
TX & RX
serial
data
Table 18–1. Transceiver and PLL Assignments for Arria V Devices (Part 2 of 2)
QSF Assignment Name
Pin Planner and
Assignment Editor
Name
Description Options
Assign
To
Table 18–2. Transceiver and PLL Assignments for Arria V Devices (Part 1 of 2)
QSF Assignment Name
Pin Planner and
Assignment Editor
Name
Description Options Assign To
Analog Parameters with Global Default Value
PLL_BANDWIDTH_PRESET
PLL Bandwidth Preset
Specifies the TX PLL and RX CDR
bandwidth preset setting.
Auto
Low
Medium
High
PLL
instance
PLL_BANDWIDTH_PRESET
PLL Bandwidth Preset
Specifies the PLL bandwidth preset
setting
Auto
Low
Medium
High
PLL
instance
XCVR_RX_DC_GAIN
Receiver Buffer DC Gain
Control
Controls the amount of a stage
receive-buffer DC gain.
0–1
Pin -
RX serial
data
XCVR_RX_LINEAR_EQUALIZER_
CONTROL
Receiver Linear Equalizer
Control
Static control for the continuous time
equalizer in the receiver buffer. The
equalizer has 3 settings from 0–2
corresponding to the increasing AC
gain.
0, 1, 2
Pin -
RX serial
data
Analog Parameters with Computed Default Value
XCVR_RX_SEL_HALF_BW
Receiver Equalizer Gain
Bandwidth Select
Enables half bandwidth mode. For data
rate > 3.25GHZ, select FULL_BW. For
data rate 1.5GHz, select HALF_BW.
FULL_BW
HALF_BW
Pin -
RX serial
data
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