DADA SOM/DADA Hardware/Peripherals/USB
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Peripheral USB[edit | edit source]
The AM62x SoC instantiates two independent instances of a third-party USB subsystem (USB2SS) operating at up to USB2.0 speeds (480Mb/s), either of which can be independently configured to act as a USB Host or a USB Device.
Description[edit | edit source]
The USB 2.0 subsystem (USB2SS) supports the following USB Features:
- Operational modes:
- Supports USB 2.0 Host mode at High-Speed (HS, 480 Mbps), Full-Speed (FS, 12 Mbps), and Low-Speed (LS, 1.5 Mbps)
- Supports USB 2.0 Device mode at High-Speed (HS, 480 Mbps), and Full-Speed (FS, 12 Mbps). Low-Speed is not supported in Device mode
- Supports all modes of transfers - Control, Bulk, Interrupt, and Isochronous
- A DRD (Dual-Role-Device - Host or Device) USB controller with the following features:
- Compatible to the xHCI 1.0 specification in Host mode
- Compatible with the USB 2.0 specification in Device mode
- Supports 15 IN (Receive), 15 OUT (Transmit) endpoints (EPs), and one EP0 endpoint which is bidirectional
- Operation flexibility
- Same programming model for HS, FS, and LS operation
- Each controller instance can provide either USB Host or USB Device functionality
