Functional Description
Microsemi Proprietary and Confidential UG0677 User Guide Revision 9.0 19
The ERM manages the device behavior at first power-up or release from device reset (DEVRSTn). The
ERM managed calibration begins after the device complete its initial startup configuration and the
assertion of XCVR_INIT_DONE de-asserts the CTRL_ARST_N. This requires a valid serial data stream
to be applied to the RXD input pins at the time of de-assertion of the CTRL_ARST_N signal. At that time,
the ERM performs the desired user selected calibration operation as shown in the following figure. The
LANE#_RX_IDLE activity shows the detection of incoming data moving the ERM to place the CDR into
LOCK2DATA operation while it completes calibration and fine lock operation. The operation is indicated
by the LANE#_CALIBRATING and RX_READY status signals. The LANE#_RX_VAL with output high
upon completion of the calibration and locking routine.
The following table lists the ports exposed based on DFE options.
Figure 11 • DFE Options
Table 5 • DFE Options
Options Input Port Output Port
Incrementally recalibrate data eye LANE#_DATA_EYE_CALIBRATION LANE#_DATA_EYE_CALIBRATION_
DONE
Incrementally recalibrate DFE
coefficients
LANE#_DFE_COEFF_CALIBRATION LANE#_DFE_COEFF_CALIBRATION
_DONE
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