AK6487 ALCOR USB2.0 Single-LUN Flash Card Reader Controller

1.

Description

The AK6487 is a single chip integrated USB 2.0 multimedia card reader controller that
enables PC/DVD/Printer to read/write various types of flash media cards. Flash media
cards such as SD are widely used in digital camera, cell phone, PDA and MP3 player
to store digital photos and compressed music.
Performance of AK6487 is maximized by implementing the latest and fastest card
specification available form the industry.
Especially, AK6487 is designed with the high performance characteristic in flash card
I/O speed. Users can easy and fast transfer the digital content among the different
flash card

2.Features
Compatible USB V2.0 High Speed and Full Speed specification
LUN1: SD/MMC

3.Memory Card Type Support
Support SD spec up to ver. 4.00 (Compatible)
Support SD3.0 SDR-104, SDR-50 and DDR 50.
Support high capacity up to 2TB
Compatible MMC spec v4.4

4.

Others

Hardware DMA engine integrated for performance enhancement.

Ping-pong FIFO implementation for concurrent bus operation

Support multiple sectors transfer optimize performance

Support Dynamic Icon Utility

Support Role Switch Function

Support ISP (In System Programming) for firmware upgrade from the external
SPI Flash via USB port

5.

Support LED for bus operating indication. Blinking rate is 1Hz and 50% duty
cycle

Power switch integrated to reduce production BOM cost

Integrated high speed 8051 CPU

Built in 5V to 3.3V and 3.3V to 1.8V regulator.

Built in resonator and both support external 12MHz crystal clock source input.

Available in 48-pin QFN package

6.Application Block Diagram
Following application diagram demonstrates a typical card reader using the AK6487
chip. By connecting the card reader to a desktop or notebook PC through USB bus,
the AK6487 becomes a bus-powered, high speed USB card reader, which can be
used as a bridge for data transfer between Desktop PC and Notebook PC

7.Pin Assignment