3.5

Synchronization modes

The sensor has multiple synchronization modes:

1. Leader mode

–

Image streaming starts right after the execution of a streaming initialization command sent over the I2C

bus

–

After the initialization sequence, wait for a rising edge event on GPIO0 to start streaming images

2. Follower mode

–

Using GPIO pulses

–

Using I²C triggering commands

3.6

General purpose input/outputs (GPIOs)

The sensor provides eight GPIOs:

•

GPIO0 is used as a frame start synchronization signal or as a generic GPIO if not used for this function

•

GPIO[1-7] are used as PWM outputs, pulse (strobe) outputs, VSYNC, or as a generic GPIO, as per the

configuration

Figure 8. GPIO modes

All GPIO settings are fully configurable for the four context setups. Each output signal can be mapped to one or

several of the GPIOs. All GPIOs have configurable polarity.

Figure 9. PWM and pulse overview

During SW_STANDBY state the GPIOs can be controlled as output low/high or input.

VD66GY

Functional description

DS13838 - Rev 7

page 12/37