The mapping between the 100G Ethernet IP with high speed GTM transceiver along with the clocking and reset modules are depicted in the following figures.
Figure 1. CMAC Clock and Reset – 100GAUI-2 GTM with Transcode Configuration

Figure 2. CMAC Clock and Reset – CAUI-4 GTM Configuration

Figure 3. CMAC Clock and Reset – 100GAUI-4 GTM Configuration

The supported GTM configurations for CMAC is shown in the following table.
Configuration | GTM Presets Used | Line Rate (Gb/s) | GTM Data Encoding | GTM Data Width |
---|---|---|---|---|
100GAUI-2 | GTM-PAM4_100GAUI_2 | 53.125 | PAM4 | 160 |
CAUI-4 | GTM-NRZ_CAUI_4 | 25.78125 | NRZ | 64 |
100GAUI-4 | GTM-NRZ_100GAUI_4 | 26.5625 | NRZ | 64 |