4.7. Auto Adaptation
The auto adaptation, controlled by the auto adaptation module, continuously polls rx_is_lockedtodata signal. Asserting the rx_is_lockedtodata signal low triggers the auto adaptation module state machine. The auto adaptation state machine waits for the rx_is_lockedtodata signal to assert high. Once asserted and stable, the auto adaptation starts the RX PMA adaptation by accessing register 0x14c. For more information on RX PMA adaptation and specific register, refer to the L- and H-Tile Transceiver PHY User Guide.
In the H-tile production devices, the auto adaptation and background calibration shares the access to the transceiver reconfiguration interface. When the auto adaptation wants to gain the access to the transceiver reconfiguration interface, it disables the background calibration access (to the same transceiver reconfiguration interface).
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