ST STM32F405 Reference Manual page 1381

RM0090
35 USB on-the-go high-speed (OTG_HS)
This section applies to the whole STM32F4xx family, unless otherwise specified.
35.1 OTG_HS introduction
Portions Copyright (c) 2004, 2005 Synopsys, Inc. All rights reserved. Used with permission.
This section presents the architecture and the programming model of the OTG_HS
controller.
The following acronyms are used throughout the section:
FS
HS
LS
USB
OTG
PHY
MAC
PFC
UTMI
ULPI
References are made to the following documents:
•
USB On-The-Go Supplement, Revision 1.3
•
Universal Serial Bus Revision 2.0 Specification
The OTG_HS is a dual-role device (DRD) controller that supports both peripheral and host
functions and is fully compliant with the On-The-Go Supplement to the USB 2.0
Specification. It can also be configured as a host-only or peripheral-only controller, fully
compliant with the USB 2.0 Specification. In host mode, the OTG_HS supports high-speed
(HS, 480 Mbits/s), full-speed (FS, 12 Mbits/s) and low-speed (LS, 1.5 Mbits/s) transfers
whereas in peripheral mode, it only supports high-speed (HS, 480Mbits/s) and full-speed
(FS, 12 Mbits/s) transfers. The OTG_HS supports both HNP and SRP. The only external
device required is a charge pump for VBUS in OTG mode.
35.2 OTG_HS main features
The main features can be divided into three categories: general, host-mode and peripheral-
mode features.
full-speed
High-speed
Low-speed
Universal serial bus
On-the-go
Physical layer
Media access controller
Packet FIFO controller
USB Transceiver Macrocell Interface
UTMI+ Low Pin Interface
RM0090 Rev 18
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