ST6391,92,93,95,97,99
SERIAL PERIPHERAL INTERFACE (Continued)
S-BUS/I2CBUS Timing Diagrams
The clock of the S-BUS/I2CBUS of the ST639x SPI
(single master only) has a fixed bus clock fre-
quency of 62.5KHz. All the devices connected to
the bus must be able to follow transfers with fre-
quencies up to 62.5KHz, either by being able to
transmit or receive at that speed or by applying the
clock synchronization procedure which will force
the master into a wait state and stretch low peri-
ods.
Figure 46. S-BUS Timing Diagram
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