Introduction

NS1083A is a high-performance USB 3.0 Flash Card controller designed specifically for MFi applications. It is fully in compliance with MFi Specification, supporting iAP2 protocols and EA Native Transport, Device Powered, and App Launch. It also supports MFi USBRole Switch and USB OTG. On one side, NS1083A connects with a USB interface such as Type-A, Type-C, or Apple Lightning,compatible with USB 3.1 Gen1 (5Gbps), USB Hi-Speed,and Full-Speed. On the other side, it connects with up to two 4-bit flash media cards, such as Secure Digital (SD)and microSD (T-Flash); or one 8-bit flash card such as eMMC. It also supports high density memory cards with capacity up to 2TB, and high speed memory cards including SD 3.0 UHS-I and eMMC 4.5 HS200. 

Block Diagram

Highlights

 Integrated a very low-power USB 2.0 host controllerto support MFi Role switch, allowing accessory to connect iDevice by Apple charge and sync cable. 

 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. 

 Capable of operating SD card at different frequencies for Read and Write independently. This patentedtechnology guarantees the best performance of Read and Write while meeting the MFi requirement of the maximum current limit.