AX58200 datasheet(90/180 Pages) ASIX

90 / 180 page

AX58200

EtherCAT Slave Controller SoC

USB On-The-Go (OTG)

2.34.1 Overview

The OTG controller interfaces to USB PHY and USB controllers which consist of a USB 1.1 host controller and

a USB 2.0 FS device controller. The OTG controller supports HNP and SRP protocols defined in the “On-The-

Go and Embedded Host Supplement to the USB 2.0 Revision 2.0 Specification”.

USB frame, including USB host, USB device, and OTG controller, can be configured as Host-only, Device-only,

ID-dependent or OTG Device mode defined in USBROLE (SYS_USBPHY[1:0]). In Host- only mode, USB

frame acts as USB host. USB frame can support both full-speed and low-speed transfer. In Device-only mode,

USB frame acts as USB device. USB frame only supports full-speed transfer. In ID-dependent mode, USB frame

can be USB Host or USB device depending on USB_ID pin state. In OTG device mode, the role of USB frame

depends on the definition of OTG specification. USB frame only supports full-speed transfer when OTG device

acts as a peripheral.

2.34.2 Features

⚫

Built-in USB PHY

⚫

Configurable to operate as:

–

Host-only

–

Device-only

–

ID-dependent: The role of USB frame is only dependent on USB_ID pin value--as USB Host

(USB_ID pin is low) or USB Device (USB_ID pin is high). Not support HNP or SRP protocol.

–

OTG device: dependent on USB_ID pin status to be A-device (USB_ID pin is low) or B-

device (USB_ID pin is high). Support HNP and SRP protocols.

AX58200 Datasheet(PDF) 90 Page - ASIX Electronics Corporation