SPRUHZ7K August 2015 – April 2024 AM5706 , AM5708 , AM5716 , AM5718 , AM5718-HIREL
The CPRGMII is operating in the in-band mode of operation when the EXT_EN bit of the SL_MACCONTROL register is set to 1. The link status, duplexity, and speed are determined from the RGMII input data stream RXD[3:0] when RX_CTL is deasserted, as defined in the RGMII specification. The PHY might need to be configured beforehand to output in-band data. The in-band data is indicated as shown in Table 24-861.
| RXD3 | RXD[2:1] | RXD0 | |
|---|---|---|---|
| Duplex status: | Link Speed: | RXC_CLK Speed: | Link Status: |
| 0: half-duplex | 00: 10-Mbps mode | 2.5 MHz | 0: Link is down |
| 1: full-duplex | 01: 100-Mbps mode | 25 MHz | 1: Link is up |
| 10: 1000-Mbps mode | 125 MHz | ||
| 11: reserved | reserved | ||