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,
miniSDTM, microSDTM(T-Flash), MultiMediaCard
TM
(MMC), RS MultiMediaCardTM (RS MMC), MMCmicro ,
HS-MMC, MMCmobile, Memory Stick PROTM (MS PRO), Memory Stick PROTM Duo (MS PRO Duo),
Memory Stick PRO-HGTM (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

FEATURES
USB specification compliance
- Comply with 480Mbps Universal Serial Bus specification rev. 2.0
- Comply with USB Storage Class specification rev. 1.0
- Support one device address and up to four endpoints: Control (0)/Bulk Read (1)/Bulk Write (2)/Interrupt (3)
Integrated USB building blocks
- USB2.0 transceiver macro (UTM), Serial Interface Engine (SIE), Build-in power-on reset (POR) and
low-voltage detector (LVD)
Embedded 8051 micro-controller
- Operate @ 60 MHz clock, 12 clocks per instruction cycle
- Embedded mask ROM and internal SRAM
Secure Digital
TM
(SD) and MultiMediaCard
TM (MMC)
- Supports SD specification v1.0 / v1.1 / v2.0 / SDHC (Up to 32GB)
- Compatible with SDXC (Up to 2TB)
- Supports MMC specification v3.x / v4.0 / v4.1 / v4.2
- Supports 1 / 4 bit data bus
Memory Stick PRO / Memory Stick PRO Duo / Memory Stick PRO-HG / MS Micro (M2)
- Compliant with Memory Stick Series Specification: MS PRO v1.05, MS PRO-HG Duo 1.03, MS
Micro (M2) v1.06
- Support 4bit data bus
Support boost mode for SD3.0 for better performance
Support non-SD Card Detect pin, non-MS Insertion/Removal pin design to save BOM cost
Support non-SD Write Protection pin design to save BOM cost
Support LED function to indicate power and access status
On chip clock source and no need of 12MHz Crystal Clock input
On-Chip 5V to 3.3V and 3.3V to 1.8V regulators
On-Chip power MOSFET for supplying flash media card power
Support USB disconnection by memory card unplug or manual switch for Mobile cable/ OTG reader/ PC
card reader application
Available in SSOP16 package (150 mil)