描述

解决方案

For eye scan, a horizontal offset count would normally be loaded into the lower 11 bits of the horizontal offset ES_HORZ_OFFSET as described in the User Guide.Instead, load the default value for the given application into ES_HORZ_OFFSET.For the default values, see the User Guide. The lower 7 bits of the intended horizontal offset need to be loaded into RXCDR_CFG[82:76] in a gray code format.See the table below for the decimal/gray code conversion. This 7 bit value should only be changed in 1 step increments. For example, if you want to change the offset from 8 to 12, you would step through 9, 10, and 11 before getting to 12.Bit 11 (called "phase unification" in the User Guide) still needs to be written to the ES_HORZ_OFFSET[11] without changing the default value in ES_HORZ_OFFSET[10:0] that was set earlier. Note that by changing only bit 11 and the lower 7 bits, you can reach all of the offsets shown in the User Guide for the supported widths.