GENERAL DESCRIPTION
The GL827S is USB 2.0 Single Interface Flash Card Reader controller. It supports USB 2.0 high-speed transmission to Secure DigitalTM (SD), SDHC, Mini SDTM, Micro SDTM (T-Flash) , MultiMediaCardTM (MMC), RS MultiMediaCardTM (RS MMC), MMC Plus, MMC Micro, MMC-Mobile , Memory StickTM (MS), Memory Stick DuoTM (MS Duo), High Speed Memory StickTM (HS MS), Memory Stick PROTM (MS PRO), Memory Stick PROTM Duo (MS PRO Duo ), Memory Stick PRO-HGTM (MS PRO-HG), Memory Stick ROM, MS PRO Micro, and xD-Picture Card TM (xD) on one chip. As a single chip solution for USB 2.0 flash card reader, the GL827S complies with Universal Serial Bus specification rev. 2.0, USB Storage Class specification ver.1.0, and flash card interface specification each.
The GL827S can support different kinds of interfaces in single slot and integrates a high speed 8051 microprocessor and a high efficiency hardware engine for the best data transfer performance between USB and flash card interfaces.
The GL827S pin assignment design fits to card sockets to provide easier PCB layout. 48 Pin LQFP (7mm x 7mm) , QFN28 (5mm x 5mm) and QFN24 (4mm x 4mm) are available package types.

FEATURES
● USB specification compliance
   - Comply with 480Mbps Universal Serial Bus specification rev. 2.0.
   - Comply with USB Storage Class specification rev. 1.0.
   - Support 1 device address and up to 4 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 48K Byte mask ROM and 256 byte SRAM
   - Support up to external 48K code ROM
● Secure DigitalTM and MultiMediaCardTM
   - Supports SD specification v1.0 / v1.1 / v2.0 (SDHC)
   - Supports MMC specification v3.X / v4.0 / v4.1 / v4.2.
   - x1 / x4 / x8 data transmission. (For QFN24/QFN28 up to x4)
   - Automatic CRC7 generation for command and CRC7
      verification for response on CMD
   - Support automatic CRC16 generation and verification on DAT0:7
   - In addition to full packet transaction, optional single byte / bit
      operation on both CMD and DAT line / lines
   - Process data in block or byte
● Memory StickTM / Memory Stick PRO / Memory Stick PRO Duo /
   Memory Stick Micro /Memory Stick PRO-HG
   - Comply with Memory StickTM Rev.1.43, Memory Stick PROTM Rev.1.04,
      Memory Stick Micro™ Rev.1.06, Memory Stick PRO-HGTM Rev.1.02
   - Support INS signal
   - Support automatic CRC16 generation and verification
   - Memory Stick PRO-HG 60MHz 8bit for LQFP48 / 40MHz 4bit for QFN24/QFN28
● xD-Picture (Only for LQFP48)
   - xD-Picture specification v1.21A. Type-H /Type-M /Type-M+
● On board 12 MHz Crystal driver circuit or 12/48 MHz Clock input.
● On-Chip 5V to 3.3V and 3.3V to 1.8V regulator. No external regulator required.
● On-Chip power MOSFETs for supplying flash media card power.
● Reduces the power consumption efficiently when the card reader is idle
● Available in 48 Pin LQFP (7x7 mm) package
● Available in 28 Pin QFN (5x5 mm) package
● Available in 24 Pin QFN (4x4 mm) package