PC8260MTPU200 Просмотр технического описания (PDF) - Atmel Corporation

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PC8260MTPU200

PowerPC-based Communications Processors

Atmel Corporation 

PC8260 PowerQUICC II

Differences Between

PC860 and PC8260

Serial Protocol Table

The following PC860 features are not included in the PC8260:

• On-chip crystal oscillators (must use external oscillator)

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

• Low power (standby) modes

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

• BDM (COP offers most of the same functionality)

• True little endian mode (except the PCI bus)

• 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)

Table 1 summarizes available protocols for each serial port.

Table 1. PC8260 Serial Protocols

Protocol

ATM (Utopia)

100BaseT

10BaseT

HDLC

HDLC_BUS

Transparent

UART

DPLL

Multichannel

FCC

x

x

x

x

x

SCC

Port

MCC

x

x

x

x

x

x

x

x

x

SMC

x

x

7

2131B–HIREL–02/03

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