SC16IS752IBS datasheet by NXP Semiconductors

SC16IS752IBS Frequently Asked Questions (FAQs)

• What is the maximum frequency of the clock input (SCL) for I2C mode?
  The maximum frequency of the clock input (SCL) for I2C mode is 400 kHz, but it can be up to 1 MHz in Fast-mode Plus (Fm+).
• How do I handle the FIFO buffers during power-on reset?
  During power-on reset, the FIFO buffers are reset, and any data in the buffers is lost. It is recommended to flush the FIFO buffers after power-on reset to ensure proper operation.
• What is the purpose of the XOFF and XON characters in the UART mode?
  The XOFF and XON characters are used for software flow control in UART mode. XOFF (typically 0x13) is sent by the receiver to the transmitter to stop sending data, and XON (typically 0x11) is sent by the receiver to the transmitter to resume sending data.
• How do I configure the SC16IS752IBS for 9-bit UART mode?
  To configure the SC16IS752IBS for 9-bit UART mode, set the MDD bit in the LCR register to 1, and set the WLS bits in the LCR register to 00 (for 9-bit data). Additionally, set the PAR bit in the MCR register to 1 to enable 9-bit mode.
• What is the recommended pull-up resistor value for the I2C bus?
  The recommended pull-up resistor value for the I2C bus is between 1 kΩ and 10 kΩ, depending on the bus capacitance and operating frequency.