TLC5957: Colour configuration of TLC5957

Abishek V

Part Number: TLC5957

How we will get the color mentioned in the below by configuring by software

Normal state- Green colour -- (0x01)
Alarm state - Red colour -- (0x02)
Fault state - Red colour -- (0x03)
Disable - Blue colour -- (0x04)
Pre- alarm - Orange colour -- (0x05)
Excluded - Purple colour -- (0x06)
Test Mode - Blue colour -- (0x07)

Please clarify how we can we get these colours by software configuration

Thanks and Regards

Abishek V

over 3 years ago

0 Monet Xu over 3 years ago

TI__Expert 7755 points

Hi Abishek,

Could you please provide the schematic of TLC5957 which will help to provide the responsible suggestion?

Best Regard

Monet Xu

0 Abishek V over 3 years ago in reply to Monet Xu

Prodigy 165 points

I have attached the schematics for TLC5957 below

.TI_Query_RGB.pdf

Please clarify how we can configure Red, Green, Blue, Orange, Purple colours for above configurations through software. Note that SPI signals are controlled by MCU

Thanks and Regards

Abishek V

0 Monet Xu over 3 years ago in reply to Abishek V

TI__Expert 7755 points

Hi Abishek,

For example, this is the RGB LED(OUTR/G/Bx)

choosing BC/CC for your application. the detail value depends on your request brightness. During debug, you can use the default data. You can calculate the target current refer to page 15 in datasheet.

state	OUTR/G/Bx grayscale value(48-bit)
Normal state- Green colour -- (0x01)	0000 FFFF 0000
Alarm state - Red colour -- (0x02)	0000 0000 FFFF
Fault state - Red colour -- (0x03)	0000 0000 FFFF
Disable - Blue colour -- (0x04)	FFFF 0000 0000
Pre- alarm - Orange colour -- (0x05)	0000 7FFF FFFF
Excluded - Purple colour -- (0x06)	FFFF FFFF 0000
Test Mode - Blue colour -- (0x07)	FFFF 0000 0000

Best Regard

Monet Xu

0 Abishek V over 3 years ago in reply to Monet Xu

Prodigy 165 points

Hi Monet

Can you let us know the usage of GCLK in TLC5957?

Thanks

Abishek V

0 Abishek V over 3 years ago in reply to Abishek V

Prodigy 165 points

Hi Monet,

please let us know the usage of GCLK. Also let us know is it possible to blink the RGB LEDs in TLC5957 through Software?

Kindly consider this as urgent and reply.

Thanks and Regards

Abishek V

0 Monet Xu over 3 years ago in reply to Abishek V

TI__Expert 7755 points

Hi Abishk,

GCLK is used as the clock of output current. GCLK rising edge increase counter by 1.

It is possible to blink the RGB LEDs in TLC5957 through Software. There are two ways for reference.

change the value of BC or CC by sending Function Control command. BC controls the brightness of all LEDs and CC_R/G/B controls the same color LEDs.
change GS to zero of LEDs periodically.

Monet Xu

Power management

Power management forum

TLC5957: Colour configuration of TLC5957