Datasheet

103
XMEGA B [DATASHEET]
8291B–AVR–01/2013
 Bit 6 – TWI: Two-Wire Interface
Setting this bit stops the clock to the two-wire interface. When this bit is cleared, the peripheral should be reinitialized to
ensure proper operation.
 Bit 5 – Reserved
This bit is unused and reserved for future use. For compatibility with future devices, always write this bit to zero when this
register is written.
 Bit 4 – USART0
Setting this bit stops the clock to USART0. When this bit is cleared, the peripheral should be reinitialized to ensure proper
operation.
 Bit 3 – SPI: Serial Peripheral Interface
Setting this bit stops the clock to the SPI. When this bit is cleared, the peripheral should be reinitialized to ensure proper
operation.
 Bit 2 – HIRES: High-Resolution Extension
Setting this bit stops the clock to the high-resolution extension for the timer/counters. When this bit is cleared, the
peripheral should be reinitialized to ensure proper operation.
 Bit 1 – TC1: Timer/Counter 1
Setting this bit stops the clock to timer/counter 1. When this bit is cleared, the peripheral will continue like before the shut
down.
 Bit 0 – TC0: Timer/Counter 0
Setting this bit stops the clock to timer/counter 0. When this bit is cleared, the peripheral will continue like before the shut
down.