TCS3404 Datasheet, PDF (27/40 Pages) TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS – DIGITAL COLOR SENSORS

SYNC IN
TCS3404, TCS3414
DIGITAL COLOR SENSORS
APPLICATION INFORMATION: SOFTWARE
TAOS137A − APRIL 2011
Integration Period
INTERRUPT
A
B
NOTE: ADC_EN must be toggled (i.e. from high to low and back to high again) before next integration cycle
Figure 25. Integrate Over One Pulse (SYNC_EDGE 0b, INTEG_MODE 11b, PARAM 0b) Falling Edge
1. Enable ADC_EN (= 1)
2. Set SYNC EDGE to 0
3. Set PARAM for SYNC PULSE COUNT of 1
4. Set INTEG_MODE to 11b
5. Input external SYNC pulse
6. Disable SYNC and read channels
SYNC IN
Integration Period
1
N
N+1
INTERRUPT
A
B
NOTES: 1. Rising edge of third SYNC IN pulse required to terminate integration cycle
2. ADC_EN must be toggled (i.e. from high to low and back to high again) before next integration cycle
Figure 26. Integrate Over Two Pulses (SYNC_EDGE 1b, INTEG_MODE 11b, PARAM Xb) Rising Edge
1. Enable ADC_EN (= 1)
2. Set SYNC EDGE to 1
3. Set PARAM for desired SYNC PULSE COUNT
4. Set INTEG_MODE to 11b
5. Input N+1 external SYNC pulses
6. Disable SYNC and read channels
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Copyright E 2011, TAOS Inc.
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