
Chapter 18: Analog Parameters Set Using QSF Assignments 18–17
Analog Settings for Stratix V Devices
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
XCVR_RX_SD_ON
Receiver Cycle Count Before
Signal Detect Block Declares
Presence Of Signal
Number of parallel cycles to wait
before the signal detect block declares
presence of signal. For the PCIe PIPE
PHY. Changing from the default value
for any other protocol results in a
Quartus II compilation error.
0–16
Pin -
RX serial
data
XCVR_RX_SD_THRESHOLD
Receiver Signal Detection
Voltage Threshold
Specifies signal detection voltage
threshold level. The following
encodings are defined:
■ SDLV_50MV=7
■ SDLV_45MV=6
■ SDLV_40MV=5
■ SDLV_35MV=4
■ SDLV_30MV=3
■ SDLV_25MV=2
■ SDLV_20MV=1
SDLV_15MV=0
For the PCIe PIPE PHY. Changing from
the default value for any other protocol
results in a Quartus II compilation
error.
0 –7
Pin - RX
serial data
XCVR_TX_COMMON_MODE_
VOLTAGE
Transmitter Common
Mode Driver Voltage
Transmitter common-mode driver
voltage
VOLT_0P80V
VOLT_0P75V
VOLT_0P70V
VOLT_0P65V
VOLT_0P60V
VOLT_0P55V
VOLT_0P50V
VOLT_0P35V
PULL_UP
PULL_DOWN
TRISTATED1
GROUNDED
PULL_UP_TO
VCCELA
TRISTATED2
TRISTATED3
TRISTATED4
Pin -
TX serial
data
XCVR_TX_PRE_EMP_PRE_TAP_
USER
Transmitter Preemphasis
Pre-Tap user
Specifies the TX pre-emphasis pretap
setting value, including inversion.
0–31
Pin -
TX serial
data
XCVR_TX_PRE_EMP_2ND_TAP_
USER
Transmitter Preemphasis
Second Post-Tap user
Specifies the transmitter pre-emphasis
second post-tap setting value,
including inversion.
0–31
Pin -
TX serial
data
XCVR_TX_PRE_EMP_1ST_POST_
TAP
Transmitter Preemphasis
First Post-Tap
Specifies the first post-tap setting
value.
0 –31
Pin -
TX serial
data
Table 18–8. Transceiver and PLL Assignments for Stratix V Devices (Part 4 of 5)
QSF Assignment Name
Pin Planner and
Assignment Editor
Name
Description Options Assign To
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