VS6724 Datasheet, PDF (24/118 Pages) STMicroelectronics – 2 Megapixel single-chip camera module

Functional description
VS6724
2.7.1
Operational mode control
The microprocessor allows high level control of the modes in which the VS6724 can
operate, this avoids the need for the host to be concerned with the complexity of controlling
the timing or power management during mode changes.
Figure 10. State machine at power -up and user mode transitions
Supplies
turned-on
& CE pin LOW
Supplies Off
Supplies
turned-off
Power-Down
State Machine at power-up
Supplies
turned-off
I²C controlled user mode transitions
Standby
-
Uninitialised
CE pin
HIGH
1
Stop Mode
CE pin LOW
It is possible to enter any of
the user modes direct from the
uninitialised state via an I2C
command
Snapshot
Pause Mode
Flashgun
Note; Depending on the snapshot
exit transition settings the device will
revert to RUN or PAUSE state
automatically after snapshot
Run Mode
Host initiated state
changes
System state changes
The power down mode is entered and exited by driving the hardware CE signal. Transitions
between all other modes are initiated by I²C transactions from the host system or
automatically after time-outs.
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