1.8.1. Packet Classifier Interface Signals
Signal | Direction | Width | Description |
---|---|---|---|
tx_egress_timestamp_ request_in_valid[] | In | NUM_CHANNELS | Assert this signal if a timestamp is required for the TX frame. Align this signal to the start of the packet. |
tx_egress_timestamp_ request_in_fingerprint[][] | In | NUM_CHANNELS x TSTAMP_ FP_WIDTH | Specifies the fingerprint of the TX frame for a given channel. You configure the width of the fingerprint using the TSTAMP_FP_WIDTH parameter. |
clock_operation_mode[][] | In | NUM_CHANNELS x 2 | Specifies the clock mode.
|
pkt_with_crc_mode[] | In | NUM_CHANNELS | Assert the respective signal bit to indicate that the packet for the channel contains a CRC field. Otherwise, deassert the signal bit. |
tx_ingress_timestamp_ valid[] | In | NUM_CHANNELS | Assert the respective signal bit to allow the residence time of the channel to be updated based on the decoded results. Otherwise, deassert the signal bit. |
tx_ingress_timestamp_96b_ data[][] | In | NUM_CHANNELS x 96 | Specify the 96-bit ingress timestamp for the channel in the following format:
|
tx_ingress_timestamp_64b_ data[][] | In | NUM_CHANNELS x 64 | Carries the 64-bit ingress timestamp for the channel in the following format:
|
tx_ingress_timestamp_ format[] | In | NUM_CHANNELS | Assert the respective signal bit to use the 64-bit timestamp format for the channel. When deasserted, the 96-bit timestamp format is used. Align this signal to the start of the packet. |