Part Number: AFE58JD48
When configuring the custom pattern to alternate between 16728 and –9981 (as shown in Figure 1), incorrect data is observed under certain conditions. Specifically, the received data becomes –9853, which differs from the expected value by 128.
This issue also occurs in other pattern modes. For example, in sine pattern mode (as shown in Figure 2), values that are expected to be 0 instead appear as 512 or 128.
We would appreciate your assistance in analyzing the possible root causes of this behavior, such as data alignment, bit shifting, sign extension, or pattern generation and capture timing. Any guidance or recommended debugging steps would be highly appreciated.

