Processor Users 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) Ö

100BaseT Ö

10BaseT ÖÖ

HDLC ÖÖÖ

HDLC_BUS Ö

Transparent ÖÖÖÖ

UART ÖÖ

DPLL Ö

Multichannel Ö