ST10F296 datasheet(188/346 Pages) STMICROELECTRONICS

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ST10F296E

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15.2

Asynchronous/synchronous serial interface (ASC1)

The XBus asynchronous/synchronous serial interfaces (ASC1) provides the same features

as ASC0. Baud rate formulae are the same. The main differences are the register interface

and interrupt management.

15.3

High speed synchronous serial interface (SSC0)

The high-speed synchronous serial interface, SSC0, provides flexible high-speed serial

communication between the ST10F296E and other microcontrollers, microprocessors or

external peripherals.

The SSC0 supports full-duplex and half-duplex synchronous communication. The serial

clock signal can be generated by the SSC0 itself (master mode) or be received from an

external master (slave mode). Data width, shift direction, clock polarity and phase are

programmable.

The SSC0 allows communication with SPI-compatible devices. Transmission and reception

of data is double-buffered. A 16-bit baud rate generator provides the SSC0 with a separate

serial clock signal. The SSC0 serial channel has its own dedicated 16-bit baud rate

generator with 16-bit reload capability, allowing the baud rate to be generated independently

from the timers.

Figure 66.

Synchronous serial channel SSC0 block diagram

Baud rate generator

SSC0 control

block

Internal bus

Clock control

CPU

clock

Slave clock

Master clock

SCLK0

Shift

clock

Status

Control

Receive interrupt request

Transmit interrupt request

Error interrupt request

16-bit shift register

control

MTSR0

MRST0

Transmit buffer

Receive buffer

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