V-Series Transceiver PHY IP Core User Guide

ID 683171
Date 7/26/2022
Public
Document Table of Contents

4.11.4. Embedded Processor Interface Signals

The optional embedded processor interface signals allow you to use the embedded processor mode of Link Training. This mode overrides the TX adaptation algorithm and allows an embedded processor to initialize the link.
Table 38.  Embedded Processor Interface Signals
Signal Name Direction Description
upi_mode_en Input When asserted, enables embedded processor mode.
upi_adj[1:0] Input Selects the active tap. The following encodings are defined:
  • 2'b01: Main tap
  • 2'b10: Post‑tap
  • 2'b11: Pre‑tap
upi_inc Input When asserted, sends the increment command.
upi_dec Input When asserted, sends the decrement command.
upi_pre Input When asserted, sends the preset command.
upi_init Input When asserted, sends the initialize command.
upi_st_bert Input When asserted, starts the BER timer.
upi_train_err Input When asserted, indicates a training error.
upi_rx_trained Input When asserted, the local RX interface is trained.
upo_enable Output When asserted, indicates that the 10GBASE‑KR PHY IP Core is ready to receive commands from the embedded processor.
upo_frame_lock Output When asserted, indicates the receiver has achieved training frame lock.
upo_cm_done Output When asserted, indicates the master state machine handshake is complete.
upo_bert_done Output When asserted, indicates the BER timer is at its maximum count.
upo_ber_cnt [ <w>-1:0] Output Records the BER count.
upo_ber_max Output When asserted, the BER counter has rolled over.
upo_coef_max Output When asserted, indicates that the remote coefficients are at their maximum or minimum values.