SLDS204B October 2014 – June 2020 PGA300
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 is used to accurately receive all subsequent fields transmitted by the master. The format of the sync field is shown in Figure 16.
NOTE
The width of consecutive sync-field bits is measured and compared to determine if a valid sync field was transmitted to the PGA300. If the difference in bit widths of any two consecutive sync-field bits is greater than ±25%, then the PGA300 ignores the rest of the OWI frame; that is, the PGA300 does not respond to the OWI message.