GL823K Datasheet

© 2014 Genesys Logic, Inc. - All rights reserved.

Page 6

GLI Confidential

CHAPTER 1

GENERAL DESCRIPTION

The GL823K is a USB 2.0 Single-LUN card reader controller which can support SD/MMC/MSPRO Flash

Memory Cards. It supports USB 2.0 high-speed transmission to Secure Digital

TM

(SD), SDHC, SDXC,

miniSD

TM, microSDTM(T-Flash), MultiMediaCard

TM

(MMC), RS MultiMediaCard

TM (RS MMC), MMCmicro ,

HS-MMC, MMCmobile, Memory Stick PRO

TM (MS PRO), Memory Stick PROTM Duo (MS PRO Duo),

Memory Stick PRO-HG

TM (MS PRO-HG), MS Micro (M2) on one chip. As a single chip solution for USB 2.0

flash card reader, the GL823K complies with Universal Serial Bus specification rev. 2.0, USB Storage Class

Specification ver.1.0, and each flash card interface specification.

The GL823K integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best

data transfer performance between USB and flash card interfaces. Its pin assignment design fits to card sockets

to provide easier PCB layout. Inside the chip, it integrates 5V to 3.3V regulator, 3.3V to 1.8V regulator and

power MOSFETs and it enables the function of on-chip clock source (OCCS) which means no external 12MHz

XTAL is needed and that effectively reduces the total BOM cost.

The GL823K implements USB disconnect function; it can be used for Mobile cable/ OTG reader/ PC card reader

application