188 www.xilinx.com 7 Series FPGAs GTP Transceivers User Guide
UG482 (v1.9) December 19, 2016
Chapter 4: Receiver
RX_BUFFER_CFG 6-bit Binary RX elastic buffer configuration.
Reserved. The recommended value from the 7 Series FPGAs
Transceivers Wizard should be used.
RX_DEFER_RESET_BUF_EN String Defer RX elastic buffer reset on comma realignment. The time
deferred is controlled by RXBUF_EIDLE_HI_CNT.
TRUE: Enables deferral of RX elastic buffer reset on comma
realignment.
FALSE: Disables deferral of RX elastic buffer reset on comma
realignment.
RXBUF_ADDR_MODE String RX elastic buffer address mode.
FULL: Enables the RX elastic buffer for clock correction and
channel bonding support.
FAST: Enables the RX elastic buffer for phase compensation
without clock correction and channel bonding support. This
mode is recommended for high line rates.
RXBUF_EIDLE_HI_CNT 4-bit Binary Controls the timing of asserting the GTP transceiver internally
generated RX elastic buffer reset on electrical idle when valid data
is not present on the RXP/RXN serial lines.
Reserved. The recommended value from the 7 Series FPGAs
Transceivers Wizard should be used.
RXBUF_EIDLE_LO_CNT 4-bit Binary Controls the timing of deasserting the GTP transceiver internally
generated RX elastic buffer reset on electrical idle when valid data
is present on the RXP/RXN serial lines.
Reserved. The recommended value from the 7 Series FPGAs
Transceivers Wizard should be used.
RXBUF_RESET_ON_CB_CHANGE String GTP transceiver internally generated RX elastic buffer reset on
channel bonding change.
TRUE: Enables auto RX elastic buffer reset on channel bonding
change.
FALSE: Disables auto RX elastic buffer reset on channel
bonding change.
RXBUF_RESET_ON_COMMAALIGN String GTP transceiver internally generated RX elastic buffer reset on
comma realignment.
TRUE: Enables auto RX elastic buffer reset on comma
alignment.
FALSE: Disables auto RX elastic buffer reset on comma
alignment.
Table 4-34: RX Buffer Attributes (Cont’d)
Attribute Type Description
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