XC164CS datasheet(40/71 Pages) INFINEON

40 / 71 page

XC164

Derivatives

Functional Description

Data Sheet

V2.1, 2003-06

3.12

High Speed Synchronous Serial Channels (SSC0/SSC1)

The High Speed Synchronous Serial Channels SSC0/SSC1 support full-duplex and half-

duplex synchronous communication. It may be configured so it interfaces with serially

linked peripheral components, full SPI functionality is supported.

A dedicated baud rate generator allows to set up all standard baud rates without

oscillator tuning. For transmission, reception and error handling three separate interrupt

vectors are provided.

The SSC transmits or receives characters of 2 … 16 bits length synchronously to a shift

clock which can be generated by the SSC (master mode) or by an external master (slave

mode). The SSC can start shifting with the LSB or with the MSB and allows the selection

of shifting and latching clock edges as well as the clock polarity.

A number of optional hardware error detection capabilities has been included to increase

the reliability of data transfers. Transmit error and receive error supervise the correct

handling of the data buffer. Phase error and baudrate error detect incorrect serial data.

Summary of Features

• Master or Slave mode operation

• Full-duplex or Half-duplex transfers

• Baudrate generation from 20 Mbit/s to 305.18 bit/s (@ 40 MHz)

• Flexible data format

– Programmable number of data bits: 2 to 16 bits

– Programmable shift direction: LSB-first or MSB-first

– Programmable clock polarity: idle low or idle high

– Programmable clock/data phase: data shift with leading or trailing clock edge

• Loop back option available for testing purposes

• Interrupt generation on transmitter buffer empty condition, receive buffer full condition,

error condition (receive, phase, baudrate, transmit error)

• Three pin interface with flexible SSC pin configuration

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