TLC5957: SPI transaction time

Part Number: TLC5957
Other Parts Discussed in Thread: TLC59581, TLC6946

Hi,

1. TLC5957RTQR Supports daisy chain mode? As I want to interface 2 TLC5957RTQR. But in my MCU only one SPI available.

2. Do you have any SPI timing analysis data for to know how much total time SPI transaction will take by using seperate 2 SPI or by using single SPI(daisy chain)?

over 3 years ago

0 Frank Qiu over 3 years ago

TI__Genius 15776 points

Hi Shawn, could you help in this case.

0 Shawn Ding over 3 years ago

TI__Expert 3190 points

1. Yes, for the structure, you can refer to TLC59581 or TLC6946

2. It depends on the transimitting speed of your SPI interface(frequency or period of SCLK), equal to the sclk period x bits#( bits number = chip number x bits per chip )

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TLC5957: SPI transaction time