Universal Serial Bus Controller User's Guide

1 Introduction

1.1 Purpose of the Peripheral

1.2 Features

1.3 Features Not Supported

User's Guide

SPRUGH3 – November 2008

Universal Serial Bus (USB) Controller

This document describes the universal serial bus (USB) controller in the TMS320DM357 Digital Media

System-on-Chip (DMSoC). The controller supports high-speed USB peripheral mode and high-speed

limited host-mode operations. The USB controller can be operated by ARM through the memory-mapped

registers.

Note: The High-Speed USB OTG Controller is an instantiation of the MUSBMHDRC from Mentor

Graphics Corporation.

Mentor Graphics is a registered trademark of Mentor Graphics Corporation or its affiliated

companies in the United States and other countries.

The USB controller supports data throughput rates up to 480 Mbps. It provides a mechanism for data

transfer between USB devices and also supports host negotiation.

The USB has the following features:

• Supports USB 2.0 peripheral at High Speed (480 Mbps) and Full Speed (12 Mbps)

• Supports USB 2.0 host at High Speed (480 Mbps), Full Speed (12 Mbps), and Low Speed (1.5 Mbps)

• Supports USB 2.0 OTG

• Supports four simultaneous RX and TX endpoints, more can be supported by dynamically switching

• Each endpoint can support all transfer types (control, bulk, interrupt, and isochronous)

• Supports USB extensions for Session Request (SRP) and Host Negotiation (HNP)

• Includes a 4K endpoint FIFO RAM, and supports programmable FIFO sizes

• External 5V power supply for VBUS can be controlled through I2C

• Includes a DMA controller that supports four TX and four RX DMA channels

• Includes RNDIS mode of DMA for accelerating RNDIS type protocols using short packet termination

over USB

The following features are not supported:

• High Bandwidth Isochronous Transfer.

• High Bandwidth Interrupt Transfer.

• Automatic Amalgamation of Bulk Packets (CPPI DMA will indirectly handle this feature and is not

supported at the core level).

• Automatic Splitting of Bulk Packets (CPPI DMA will indirectly handle this feature and is not supported

at the core level).

Universal Serial Bus (USB) Controller14 SPRUGH3 – November 2008

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