280
ABOV Semiconductor Co., Ltd.
USInCR1 (USI0/1 Control Register 1: For UART, SPI and I2C mode) : 4030H/4040H (XSFR), n = 0 and 1
Initial value : 00H
Selects operation mode of USIn
Selects parity generation and check methods (only UART mode)
When in asynchronous or synchronous mode of operation,
selects the length of data bits in frame
This bit in the same bit position with USInS1. The MSB of the data byte is transmitted
first when set to ‘1’ and the LSB when set to ‘0’ (only SPI mode)
This bit determines the clock polarity of ACK in synchronous or SPI mode.
TXD change@Rising Edge, RXD change@Falling Edge
TXD change@Falling Edge, RXD change@Rising Edge
This bit is in the same bit position with USInS0. This bit determines if data are sampled
on the leading or trailing edge of SCK (only SPI mode).
This bit determines the clock polarity of ACK in synchronous or SPI mode.
TXD change@Rising Edge, RXD change@Falling Edge
TXD change@Falling Edge, RXD change@Rising Edge