Introduction

NS1301 is a general USB 2.0 host controller designed specifically for smartphone applications. It has two USB 2.0 transceivers and able to connect with up to two USB ports. It is fully in compliance with Apple MFi Specification, supporting MFi USB Role Switch and iAP2 protocols such as EA Native Transport, Device Powered, and App Launch. It also supports USB OTG and Android Open Accessory (AOA) Protocol 2.0. NS1301 connects with one4-bit flash media card, such as Secure Digital(SD) and microSD (T-Flash). It also integrates a 10-bit ADC, multiple serial interfaces and multiple GPIOs, making it an ideal USB host controller used for low power smartphone applications. 

Block Diagram

Highlights

 Two low-power USB 2.0 Host specifically optimized for smartphoneapplications. Each USB 2.0 transceiver can be configured to either USB 2.0/1.1 Host or USB 2.0/1.1 device. An integrated USB 2.0 MUX enables data selection from one of the USB 2.0 transceivers.

 Support charging mode detection compatible with specifications from Apple and USB BC1.2. During data transfer, an iDevice can be simultaneously charged from a USB port or a power adapter at the maximum supported charging current. 

 Support AOA Protocol 2.0, allowing USB accessory built with NS1301 to support USB accessory mode, which powers the USB bus and communicates with Android phone simultaneously.