User guide

Parameter Range Description
Enable RX
descrambler
(10GBASE-R/
Interlaken)
On / Off Enables the descrambler function. This option is available for
Basic (Enhanced PCS) mode, Interlaken, and 10GBASE-R
protocols. You can enable the descrambler in Basic (Enhanced
PCS) mode with the block synchronizer enabled and with 66:32,
66:40, or 66:64 gear box ratios.
Table 2-19: Interlaken Disparity Generator and Checker Parameters
Parameter Range Description
Enable
Interlaken TX
disparity
generator
On / Off When you turn on this option, the Enhanced PCS enables the
disparity generator. This option is available for the Interlaken
protocol.
Enable
Interlaken RX
disparity checker
On / Off When you turn on this option, the Enhanced PCS enables the
disparity checker. This option is available for the Interlaken
protocol.
Enable
Interlaken TX
random
disparity bit
On / Off Enables the Interlaken random disparity bit. When enabled, a
random number is used as disparity bit which saves one cycle of
latency.
Table 2-20: Block Synchronizer Parameters
Parameter Range Description
Enable RX block
synchronizer
On / Off When you turn on this option, the Enhanced PCS enables the
RX block synchronizer. This options is available for the Basic
(Enhanced PCS) mode, Interlaken, and 10GBASE-R protocols.
Enable rx_enh_
blk_lock port
On / Off Enables the rx_enh_blk_lock port. When you enable the block
synchronizer, this signal is asserted to indicate that the block
delineation has been achieved. This is an asynchronous output
signal.
Table 2-21: Gearbox Parameters
Parameter Range Description
Enable TX data
bitslip
On / Off When you turn on this option, the TX gearbox operates in
bitslip mode. The tx_enh_bitslip port controls number of
bits by which the TX parallel data slips before going to the
PMA.
Enable TX data
polarity
inversion
On / Off When you turn on this option, the polarity of TX data is
inverted. This allows you to correct incorrect placement and
routing on the PCB.
UG-01143
2015.05.11
Enhanced PCS Parameters
2-37
Implementing Protocols in Arria 10 Transceivers
Altera Corporation
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