NUC505-YO2Y datasheet(100/130 Pages) NUVOTON

100 / 130 page

NUC505

July. 26, 2018

Page 100 of 130

Rev.1.08

USB 2.0 Device Controller (USBD)

6.15

6.15.1 Overview

The USB device controller interfaces the AHB bus and the UTMI bus. The USB controller

contains both the AHB master interface and AHB slave interface. CPU programs the USB

controller registers through the AHB slave interface. For IN or OUT transfer, the USB device

controller needs to write data to memory or read data from memory through the AHB master

interface. The USB device controller is complaint with USB 2.0 specification and it contains 12

configurable endpoints in addition to control endpoint. These endpoints could be configured to

BULK, INTERRUPT or ISO. The USB device controller has a built-in DMA to relieve the load of

CPU.

6.15.2 Features



USB Specification reversion 2.0 compliant



Supports 12 configurable endpoints in addition to Control Endpoint



Each of the endpoints can be Isochronous, Bulk or Interrupt and either IN or OUT direction



Three different operation modes of an in-endpoint － Auto Validation mode, Manual

Validation mode, Fly mode



Supports DMA operation



2048 Bytes Configurable RAM used as endpoint buffer



Supports Endpoint Maximum Packet Size up to 1024 bytes

NUC505-YO2Y 数据表(PDF) 100 Page - Nuvoton Technology Corporation