SPRUI30H November 2015 – May 2024 DRA745 , DRA746 , DRA750 , DRA756
The measurement reference for the IPG of 96 bit times is changed depending on frame traffic conditions. If a frame is successfully transmitted without collision, and MCRS is de-asserted within approximately 48 bit times of MTXEN being de-asserted, then 96 bit times is measured from MTXEN. If the frame suffered a collision, or if MCRS is not de-asserted until more than approximately 48 bit times after MTXEN is de-asserted, then 96 bit times (approximately, but not less) is measured from MCRS.
The transmit IPG can be shortened by eight bit times when enabled and triggered. The TX_SHORT_GAP_EN bit in the SL_MACCONTROL register enables the TX_SHORT_GAP input to determine whether the transmit IPG is shorted by eight bit times.