ZHCSIP5 August 2024 PGA305
PRODUCTION DATA
7.3.12.3.1.3 Sync Field
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 receive accurately all subsequent fields transmitted by the master. The format of the sync field is shown in Figure 11.
Figure 11. OWI Sync Field NOTE
Consecutive sync-field bits are measured and compared to determine if a sync field was transmitted to the PGA305 device is valid. If the difference in bit widths of any two consecutive SYNC field bits is greater than ±25%, then the PGA305 device ignores the rest of the OWI frame and does not respond to the OWI message.