Features Of The Usb Otg Controller - Altera Cyclone V Device Handbook

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Features of the USB OTG Controller

Related Information

Additional information is available in the On The Go and Embedded Host Supplement to the USB Revision

2.0 Specification, which you can download from the USB Implementers Forum website

Features of the USB OTG Controller

The USB OTG controller has the following USB-specific features:

• Complies with both Revision 1.3 and Revision 2.0 of the On The Go and Embedded Host Supplement to

the USB Revision 2.0 Specification

• Supports software-configurable modes of operation between OTG 1.3 and OTG 2.0

• Supports all USB 2.0 speeds:

• High speed (HS, 480-Mbps)

• Full speed (FS, 12-Mbps)

• Low speed (LS, 1.5-Mbps)

In host mode, all speeds are supported. However, in device mode, only high speed and full

speed are supported.

• Supports all USB transaction types:

• Control transfers

• Bulk transfers

• Isochronous transfers

• Interrupts

• Supports automatic ping capability

• Supports Session Request Protocol (SRP) and Host Negotiation Protocol (HNP)

• Supports suspend, resume, and remote wake

• Supports up to 16 host channels

In host mode, when the number of device endpoints is greater than the number of host channels,

software can reprogram the channels to support up to 127 devices, each having 32 endpoints (IN

+ OUT), for a maximum of 4,064 endpoints.

• Supports up to 16 bidirectional endpoints, including control endpoint 0

Only seven periodic device IN endpoints are supported.

• Supports a generic root hub

• Performs transaction scheduling in hardware

Altera Corporation

USB 2.0 OTG Controller

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