SLDS231 August 2018 PGA305
PRODUCTION DATA.
A complete one-wire data transmission operation is done in a frame with the structure is shown in Figure 10.
Each transmission frame must have a synchronization field and a command field followed by zero to a maximum of eight data fields. The sync field and command fields are always transmitted by the master device. The data fields may be transmitted either by the master or the slave, depending on the command given in the command field. It is the command field which determines direction of travel of the data fields (master-to-slave or slave-to-master). The number of data fields transmitted is also determined by the command in the command field. The inter-field wait time is optional and may be necessary for the slave or the master to process data that has been received.
NOTE
If the OWI remains idle in either the logic-0 or logic-1 state for more than 15 ms, then the PGA305 communication resets and requires a sync field as the next data transmission from the master.