MC3S12RG128 Datasheet, PDF (479/546 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 17 Serial Peripheral Interface (SPIV3) Block Description
17.2.2 MISO — Master In/Slave Out Pin
This pin is used to transmit data out of the SPI module when it is configured as a slave and receive data
when it is configured as master.
17.2.3 SS — Slave Select Pin
This pin is used to output the select signal from the SPI module to another peripheral with which a data
transfer is to take place when its configured as a master and its used as an input to receive the slave select
signal when the SPI is configured as slave.
17.2.4 SCK — Serial Clock Pin
This pin is used to output the clock with respect to which the SPI transfers data or receive clock in case of
slave.
17.3 Memory Map and Register Definition
This section provides a detailed description of address space and registers used by the SPI.
MC3S12RG128 Data Sheet, Rev. 1.05
Freescale Semiconductor
479