Features - Freescale Semiconductor MPC850 User Manual

Features

Peripheral Bus
Rx FIFO
16-Byte
USB Function Endpoint
and Host State Machine
Receiver
DPLL/
Bus Interface
External Transceiver
32.2 Features
The following list summarizes USB slave mode features:
• Four independent endpoints support control, bulk, interrupt, and isochronous data
transfers
• CRC16/CRC5 generation and checking
• NRZI encoding/decoding with bit stuffing
• 12- or 1.5-Mbps data rate
• Flexible data buffers with multiple buffers per frame
• Automatic retransmission upon transmit error
The following list summarizes the USB host controller features:
• Supports control, bulk, interrupt, and isochronous data transfers
• CRC16 generation and checking
• NRZI encoding/decoding with bit stuffing
Tx FIFO
16-Byte
Transmitter
Figure 32-1. USB Controller Block Diagram
MPC850 Family User's Manual
U-bus
Port Control
Mode Register Command Register
Port Configuration
Mode Register
Endpoint
Registers
Address
Register