Altera Transceiver PHY IP Core User Manual
Page 35
Name
Value
Description
Enable embedded reset control On/Off
When On, the automatic reset controller initiates
the reset sequence for the transceiver. When Off you
can design your own reset logic using
tx_analogr-
eset
,
rx_analogreset
,
tx_digitalreset
,
rx_
digitalreset
, and
pll_powerdown
which are
top-level ports of the Custom Transceiver PHY. You
may also use the Transceiver PHY Reset Controller
to reset the transceivers. For more information, refer
to the Transceiver Reconfiguration Controller IP
Core . By default, the CDR circuitry is in automatic
lock mode whether you use the embedded reset
controller or design your own reset logic. You can
switch the CDR to manual mode by writing the
pma_
rx_setlocktodata
or
pma_rx_set_locktoref
registers to 1. If either the
pma_rx_set_locktodata
and
pma_rx_set_locktoref
is set, the CDR
automatic lock mode is disabled.
Starting channel number
0-96
For Stratix IV devices, specifies the starting channel
number. Must be 0 or a multiple of 4. You only need
to set this parameter if you are using external PMA
and reconfiguration modules.
In Stratix V devices, by default, the logical channel 0
is assigned to either physical transceiver channel 1 or
channel 4 of a transceiver bank. However, if you
have already created a PCB with a different lane
assignment for logical channel 0, you can use the
work around shown in the example below.
Assignment of the starting channel number is
required for serial transceiver dynamic reconfigura‐
tion.
Enable IEEE 1588 latency
adjustment ports
On/Off
When you turn this option On, the core includes
logic to implement the IEEE 1588 Precision Time
Protocol.
Example 3-1: Changing the Default Logical Channel 0 Channel Assignments in Stratix V Devices
for ×6 or ×N Bonding
This example shows how to change the default logical channel 0 assignment in Stratix V devices
by redefining the pma_bonding_master parameter using the Quartus II Assignment Editor. In
this example, the pma_bonding_master was originally assigned to physical channel 1. (The
original assignment could also have been to physical channel 4.) The to parameter reassigns the
UG-01080
2015.01.19
General Option Parameters
3-11
10GBASE-R PHY IP Core
Altera Corporation