Test Setup and Results
9
SLVUB43 – September 2017
Copyright © 2017, Texas Instruments Incorporated
TLC6C5816-Q1EVM User's Guide
2.3.2.4
ERR Indicator and Device Reset
The TLC6C5816-Q1 device has an ERROR pin which can indicate when an error happens in the device.
The TLCC65816EVM GUI integrates an ERR indicator which detects the ERROR pin status
simultaneously. Red indicates ERROR pin is pulled down, green means there is no fault on the device.
Both the CLR pin and EN of TLC6C5816-Q1 are low active pins. CLR high means the voltage on CLR pin
is high, so the register clear function is disabled. CLR low means the voltage on the CLR pin is low, so the
register data is cleared.
EN low means the voltage on the EN pin is low and the device is enabled. EN high means the voltage on
the EN pin is high, so the device is disabled. EN high puts the device in low-power mode and clears all the
register data simultaneously.
Figure 11. ERR Indicator and Device Reset
2.3.2.5
PWM Dimming
PWM0 controls the G1 pin to enable the PWM dimming function on CH0–CH7. PWM1 controls the G2 pin
to enable the PWM dimming function on CH8–CH15. The PWM frequency has 5 options: 2 kHz, 1 kHz,
400 Hz, 200 Hz, 100 Hz, and the duty cycle can be configured from 0 to 100%.
Figure 12. PWM Dimming
2.3.2.6
Cascading Device Mode
The TLC6C5816EVM can be configured as two devices connected in cascade by removing the shunt on
J33 and putting shunts on J31 and J32.
NOTE:
The GUI only has channel-on and -off functions for devices in cascade. The GUI does not
implement the LED diagnostics function for devices in cascade. All channels of the cascaded
devices are dimmed by PWM2.