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MC9S12VR-Family - Data Sheet - Freescale Semiconductor

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10.1.4 Block Diagram<br />

<strong>MC9S12VR</strong> <strong>Family</strong> Reference Manual, Rev. 2.8<br />

Serial Communication Interface (S12SCIV5)<br />

Figure 10-1 is a high level block diagram of the SCI module, showing the interaction of various function<br />

blocks.<br />

RXD <strong>Data</strong> In<br />

Bus Clock<br />

Infrared<br />

Decoder<br />

Baud Rate<br />

Generator<br />

1/16<br />

SCI <strong>Data</strong> Register<br />

Receive Shift Register<br />

Receive & Wakeup<br />

Control<br />

<strong>Data</strong> Format Control<br />

Transmit Control<br />

Transmit Shift Register<br />

SCI <strong>Data</strong> Register<br />

Figure 10-1. SCI Block Diagram<br />

Receive<br />

Interrupt<br />

Generation<br />

Transmit<br />

Interrupt<br />

Generation<br />

Infrared<br />

Encoder<br />

<strong>Data</strong> Out TXD<br />

<strong>Freescale</strong> <strong>Semiconductor</strong> 307<br />

IDLE<br />

RDRF/OR<br />

BRKD<br />

RXEDG<br />

BERR<br />

TDRE<br />

TC<br />

SCI<br />

Interrupt<br />

Request

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