JAJSEA1 December 2017 PGA302
PRODUCTION DATA.
The Sync field is the first field in every frame that is transmitted by the master. The Sync field is used by the slave device to compute the bit width transmitted by the master. This bit width will be used to accurately receive all subsequent fields transmitted by the master. The format of the Sync field is shown in Figure 19.
NOTE
Consecutive SYNC field bits are measured and compared to determine if a valid SYNC field is being transmitted to the PGA302 is valid. If the difference in bit widths of any two consecutive SYNC field bits is greater than +/- 25%, then PGA302 will ignore the rest of the OWI frame (that is, the PGA302 will not respond to the OWI message).