JAJSLW7B December 2020 – September 2023 TPS6593-Q1
PRODUCTION DATA
The device supports SPI serial-bus interface and it operates as a peripheral device. The MCU in the system acts as the controller device. A single read and write transmission consists of 24-bit write and read cycles (32-bit if CRC is enabled) in the following order:
The embedded CRC filed can be enabled or deactivated from the protocol by setting the I2C1_SPI_CRC_EN register bit to '1' - enabled, '0' - deactivated. The default of this bit is configurable through the NVM.
The SDO output is in a high-impedance state when the CS pin is high. When the CS pin is low, the SDO output is always driven low except when the RDATA or SCRC bits are sent. When the RDATA or SCRC bits are sent, the SDO output is driven accordingly.
The address, page, data, and CRC are transmitted MSB first. The chip-select signal (CS) must be low during the cycle transmission. The CS signal resets the interface when it is high, and must be taken high between successive cycles. Data is clocked in on the rising edge of the SCLK clock signal and it is clocked out on the falling edge of SCLK clock signal.
The SPI Timing diagram shows the timing information for these signals.