USB2.0 Smart Card Reading Scheme Bl8810 Can Replace Gl823k Card Reading Scheme

Chuangwei gl823k is a USB 2.0 single Lun reader controller that supports SD / MMC / mspro flash cards. It supports USB 2.0 high-speed transmission, including digital TM (SD), SDHC, SDXC, mini DTM, micro DTM (T-Flash), multi media card TM (MMC), RS multi media card TM (RS MMC), MMC micro, hs-mmc, MMC mobile, memory stick ProTM (MS Pro), memory stick ProTM Duo (MS Pro Duo), memory stick pro hgtm (MS PRO-HG), and MS micro (M2) Security is on a chip.

Taiwan Wangjiu bl8810 can completely replace gl823k and bl8810 as a USB 2.0 single-chip solution flash card reader. Bl8810 complies with Universal Serial Bus Specification Revision 2.0, USB storage class specification version 1.0, and each flash card interface specification.

Bl8810 integrates high-speed 8051 microprocessor and efficient hardware engine to achieve the best data transmission performance between USB and flash card interface. Its pin distribution design is suitable for card socket to provide simpler PCB layout. Inside the chip, it integrates 5V to 3.3V voltage regulator, 3.3V to 1.8V voltage regulator and power MOSFET, and realizes the function of on-chip clock source (OCCS), which means that there is no need for external 12Mhz crystal oscillator, which effectively reduces the total cost of BOM, and the bl8810 realizes the USB disconnection function; It can be used in mobile cable / OTG card reader / PC card reader applications.

Bl8810 replaces gl823k characteristic parameters:

-Comply with 480mbps universal serial bus specification revision.

-Comply with USB storage class specification revision.

-Supports one device address and up to four endpoints: control (0) / bulk read (1) / bulk write (2) / interrupt (3)

Integrated USB building block

-USB2.0 transceiver macro (UTM), serial interface engine (SIE), built-in power on reset (POR) and

Low voltage detector (LVD)

Embedded 8051 microcontroller

-Run at 60 MHz clock, 12 clocks per instruction cycle

-Embedded mask ROM and internal SRAM

Secure digital card TM (SD) and multimedia card TM (MMC)

-Support SD specification v1.0/v1.1/v2.0/sdhc (up to 32GB)

-Compatible with SDXC (up to 2TB)

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

-Support 1 / 4-bit data bus

-Compatible with secure digital TM v5.0

Memory Stick PRO Duo / Memory Stick PRO Hg / MS micro (M2)

-Conform to memory stick series specifications: MS Pro v1.05, MS Pro Hg duo 1.03, Ms micro (M2) v1.06

-Support 4-bit data bus

Support the boost mode of sd3.0 for better performance

Support the design of non SD card detection pin and non MS plug-in pin to save BOM cost

Support non SD write protection pin design to save BOM cost

Support led function to indicate power supply and access status

On chip clock source without 12Mhz crystal clock input

On chip 5V to 3.3V and 3.3V to 1.8V regulators

On chip power MOSFET for powering flash media card

USB connection can be disconnected through memory card unplugging or manual switch for mobile cable / OTG card reader / PC card reader applications

SSOP16 packaging mode (150 mil)

The design structure block diagram of bl8810 USB 2.0 card reader is as follows:

The design structure block diagram of gl823k USB 2.0 card reader is as follows:

The reference circuit of USB2.0 smart card reading scheme designed by bl8810 instead of bl823k is as follows:

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