Motorola MPC8260 User Manual

MOTOROLA

Chapter 1. Overview

1-9

Part I. Overview

1.4 Differences between MPC860 and MPC8260

The following MPC860 features are not included in the MPC8260.

On-chip crystal oscillators (must use external oscillator)

4-MHz oscillator (input clock must be at the bus speed)

Low power (stand-by) modes

Battery-backup real-time clock (must use external battery-backup clock)

BDM (COP offers most of the same functionality)

True little-endian mode

PCMCIA interface

Infrared (IR) port

QMC protocol in SCC (256 HDLC channels are supported by the MCCs)

Multiply and accumulate (MAC) block in the CPM

Centronics port (PIP)

Asynchronous HDLC protocol (optional RAM microcode)

Pulse-width modulated outputs

SCC Ethernet controller option to sample 1 byte from the parallel port when a
receive frame is complete

Parallel CAM interface for SCC (Ethernet)

1.5 Serial Protocol Table

Table 1-1 summarizes available protocols for each serial port.

Table 1-1. MPC8260 Serial Protocols

Port

FCC

SCC

MCC

SMC

ATM (Utopia)

100BaseT

10BaseT

HDLC

HDLC_BUS

Transparent

UART

DPLL

Multichannel