Introduction

NS1081A is a high-performance USB 3.0 Flash Card Controller designed specifically for iDevice Accessory. It is fully in compliance with MFi Accessory Interface Specification, supporting iAP2 protocols and features such as EA Native Transport, Device Powered, and App Launch. On one side, NS1081A connects with USB interface (e.g. Type-A, Type-C) or Apple Lightning Interface, 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, compatible with various standards such as Secure Digital (SD), microSD (T-Flash), Embedded-MultiMediaCard (eMMC), etc. It also supports high density memory cards with capacity up to 2TB, and high speed memory cards including SD3.0 UHS-I cards and eMMC4.5 HS200.

Block Diagram

Highlights

Integrated a very low-power USB 2.0 transceiver specifically optimized for iDevice Accessory.

Support charging mode detection compatible with specifications from Apple, USB BC1.2 and USB Type-C. 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 flash media cards at different frequencies for Read and Write. This patent-pending technology guarantees the best performance of Read and Write while meeting the MFi requirement of the maximum current limit.