Can you please hlep me with below 2 questions related to how to correctly drive TPS92661?
- The input clock of the tps92661 is provided by the PWM of the MCU(internal clock 48M) and the frequency is 370kHz. The UART baud rate is fixed 23.8kbps. However the datasheet point out that the baud rate is 1/16 of the clock input frequency which here is 15.5 in customer’s case. What’s the tolerance of the ratio of the baud rate and the input clock? Should it be strictly 1:16 or it can be in some range such as 1:15.8~1:16.2? (In this case according to the fixed 23.8kbps it’s not easy to get an accurate 380.8kHz(23.8*16) PWM input clock. )
- After power up and enable the device, you have to first write PWR=1, then read the SYSCFG and see if it is 0x01. If yes then we can proceed, if no then device is failing connecting the MCU. Below is the sequence and is it right? First is to configure the SYSCFG, then send the command to read the SYSCFG, then RX read the SYSCFG.
配置:configure
读取:read
