mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 883

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

16.12.1 Features
The following is a list of the serial peripheral interface’s main features:
• Four-Wire Interface (SPIMOSI, SPIMISO, SPICLK, and SPISEL)
• Full-Duplex Operation
• Works with Data Characters from 4 to 16 Bits Long
• Supports Back-to-Back Character Transmission and Reception
• Master or Slave SPI Modes Supported
• Multimaster Environment Support
• Continuous Transfer Mode for Autoscanning Peripherals
• Supports Maximum Clock Rates of 6.25MHz in Master Mode and 12.5MHz in Slave
• Independent Programmable Baud Rate Generator
• Programmable Clock Phase and Polarity
• Open-Drain Output Pins Support Multimaster Configuration
• Local Loopback Capability for Testing
Mode, Assuming a 25MHz System Clock is Used
SPI MODE REG
COUNTER
SPISEL
IMB
Freescale Semiconductor, Inc.
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RXD
Figure 16-120. SPI Block Diagram
SPIMOSI
MPC823 REFERENCE MANUAL
PINS INTERFACE
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TRANSMIT_REG
SPIMISO
IN_CLK
SHIFT_REGISTER
PERIPHERAL BUS
SPICLK
RECEIVE_REG
Communication Processor Module
SPI BRG
TXD
BRGCLK
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