SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
The port 1 (and port 2) transmit inter-packet gap (IPG) may be shortened by eight bit times when enabled and triggered. The TX_SHORT_GAP_EN bit in the SL_MACCONTROL register enables the gap to be shortened when triggered. The condition is triggered when the port 1 (port 2) transmit FIFO has a user defined number of FIFO blocks used. The port 1 transmit FIFO blocks used determines if the port 1 gap is shortened, and the port 2 transmit FIFO blocks used determines if the port 2 gap is shortened. The CPSW_GAP_THRESH register value determines the port 1 short gap threshold, and the CPSW_GAP_THRESH register value determines the port 2 short gap threshold.