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   Product Descriptions

The  GL827L  is  USB  2.0  SD/MMC/MS  Flash  Card  Reader  single  chip.  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  Micro  ,  HS-MMC,  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-HG  (MS  PRO-HG),  Memory  Stick  ROM,  MS  PRO Micro  (M2)  on  one  chip.  As  a  single  chip  solution  for  USB  2.0  flash  card  reader,  the  GL827L  complies  with Universal Serial Bus specification rev. 2.0, USB Storage Class specification ver.1.0, and each flash card interface specification.

The GL827L 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.

The GL827L is packaged with 28-pin SSOP (150mil) and 24-pin QFN for up to 1 LUN (SD/MMC, MS).

   Product 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 32K Byte mask ROM and internal 256 byte SRAM

-Embedded 2K Byte external SRAM

 Secure DigitalTM and MultiMediaCardTM

-Supports SD specification v1.0 / v1.1 / v2.0

-Supports MMC specification v3.X / v4.0 / v4.1 / v4.2.

-x1 / x4 / x8 data transmission. (For QFN24 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

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