TCS3472

COLOR LIGHT-TO-DIGITAL CONVERTER

with IR FILTER

TAOS135 − AUGUST 2012

7

The LUMENOLOGY

r Company

r

r

Copyright

E 2012, TAOS Inc.

www.taosinc.com

PRINCIPLES OF OPERATION

System States

An internal state machine provides system control of the RGBC and power management features of the device.

At power up, an internal power-on-reset initializes the device and puts it in a low-power Sleep state.

Enable Register (0x00) PON bit. If PON is disabled, the device will return to the Sleep state to save power.

Otherwise, the device will remain in the Idle state until the RGBC function is enabled (AEN). Once enabled, the

device will execute the Wait and RGBC states in sequence as indicated in Figure 5. Upon completion and return

to Idle, the device will automatically begin a new Wait-RGBC cycle as long as PON and AEN remain enabled.

!WEN

& AEN

Sleep

Idle

RGBC

Wait

Start

!PON

WEN &

AEN

Figure 6. Simplified State Diagram