ZHCSIO0A December 2017 – August 2018 TLC6C5724-Q1
PRODUCTION DATA.
The TLC6C5724-Q1 device implements a Negate Bit Toggle function to check the LOD-LSD registers, which is useful for safety-related applications.
There are NEG1 and NEG2 bits in the registers, and the values are both 0 by default. After executing the Negate Bit Toggle command, both NEG1 and NEG2 change to 1. The LOD-LSD results are reversed under this condition. If the LOD-LSD registers get stuck, the LOD-LSD results are not reversed, which means there is a fault in the LOD-LSD registers .
The LOD1-LSD1 registers only update on the 9th GCLK rising edge, and the LOD2-LSD2 registers only update on the Nth GCLK rising edge. So after the Negate Bit Toggle command, users must wait for at least one GS counter cycle (4096 GCLKs for the 12-bit GS counter mode, 1024 GCLKs for the 10-bit GS counter mode, or 256 GCLKs for the 8-bit GS counter mode) before reading the SID registers. So if the GCLK signal is lost, it can also be detected by the negate-bit toggle function.