SDI Mode Detection - 2.0 English

SMPTE UHD-SDI Receiver Subsystem Product Guide

Document ID
PG290
Release Date
2022-04-26
Version
2.0 English

The UHD-SDI RX core hunts for TRS symbols and asserts rx_mode_locked if the UHD-SDI core detects error-free TRS symbols (that is, a valid XYZ word and with no CRC errors on the received line) for continuous three video lines.

Look for pulses on the rx_eav , rx_sav signals at the correct places on each line along with rx_trs signal.

Make sure no CRC errors are reported on rx_crc_err_ds1 to ds16.

Make sure supported modes are enabled in the rx_mode_enable [5:0] signal.

Verify that rx_mode [2:0] reported by the SDI core matches the incoming SDI mode.

SDI Mode detection searches the mode in the following fashion if all of the modes are set in r x_mode_enable : HD -> 3G -> 6G -> 12GA -> 12GB -> SD -> HD.

Make sure that rx_frame_en signal is asserted High during core operation.