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5.
SCI timer occurs when the baud rate counter reaches zero. This interrupt is automatically reset
when the interrupt is accepted. This interrupt is enabled by SCR[13] (TMIE).
8.6
SCI Programming Model
The SCI programming model can be viewed as three types of registers:
n
Control
— SCI Control Register (SCR) in Figure 8-3
— SCI Clock Control Register (SCCR) in Figure 8-4
n
Status
— SCI Status Register (SSR) in Figure 8-3
n
Data transfer
— SCI Receive Data Registers (SRX) in Figure 8-7
— SCI Transmit Data Registers (STX) in Figure 8-7
— SCI Transmit Data Address Register (STXA) in Figure 8-7
The SCI includes the GPIO functions described in Section 8.7, GPIO Signals and Registers,
on page 8-24. The next subsections describe the registers and their bits.
Serial Communication Interface (SCI)
SCI Programming Model
8-9
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