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ABOV Semiconductor Co., Ltd.
USInCR2 (USIn Control Register 2: For UART, SPI, and I2C mode): DAH/EAH, n = 0, 1
Initial value: 00H
Interrupt enable bit for data register empty (only UART and SPI mode).
Interrupt from DREn is inhibited (use polling)
When DREn is set, request an interrupt
Interrupt enable bit for transmit complete (only UART and SPI mode).
Interrupt from TXCn is inhibited (use polling)
When TXCn is set, request an interrupt
Interrupt enable bit for receive complete (only UART and SPI mode).
Interrupt from RXCn is inhibited (use polling)
When RXCn is set, request an interrupt
Interrupt enable bit for asynchronous wake in STOP mode. When device is in stop
mode, if RXDn goes to low level an interrupt can be requested to wake-up system.
(only UART mode). At that time the DRIEn bit and USInST1 register value should be
set to ‘0b’ and “00H”, respectively.
Interrupt from Wake is inhibited
When WAKEn is set, request an interrupt
Enables the transmitter unit (only UART and SPI mode).
Enables the receiver unit (only UART and SPI mode).
Activate USIn function block by supplying.
This bit selects receiver sampling rate (only UART).
Normal asynchronous operation
Double Speed asynchronous operation