OTi-2126 USB 2.0 8-in-1 Card Reader Controller

The OTi-2126 is a high-performance and cost-effective Flash Card Reader/Writer Controller developed for interfacing USB2.0 bus to seven types of storage devices: Compact Flash ^TM (CF) type I & type II, Micro Drive, SmartMedia ^TM (SM), xD, Secure Digital ^TM (SD), Multi Media Card ^TM (MMC), MemoryStick ^TM (MS), and MemoryStick Pro ^TM. The controller is USB2.0 High-speed for superior data transfer, and complies with USB Mass Storage Class specification ver.1.0 to provide “plug-and-play” function.

The controller also features high integration. It consists of USB 2.0 high-speed transceiver, 8051 microprocessor, interface circuitry of the seven storage devices, 48KB Mask ROM, and 384B SRAM on one chip. The chip is available in 128-pin TQFP package.

Flexibility in firmware upgrade or customization is ensured. The OTi-2126 provides read/write function from/to external Flash memory via USB interface.

Real-time ECC algorithm is implemented to ensure data integrity while still maintaining high data transfer rate.

This controller can operate on Windows XP, Windows 2000, Windows Me, and Mac OS without installing any driver.

Features

● Supports CompactFlash ^TM (CF) Type I & Type II, SmartMedia ^TM (SM), xD, Memory Stick Pro ^TM, MemoryStick ^TM (MS), Secure Digital ^TM (SD) 
and Multi Media Card ^TM (MMC) interface on one chip.
● Complies with 480Mbps Universal Serial Bus specification rev.2.0.
● Complies with USB Storage Class specification rev.1.0. (Bulk only protocol).
● Operating System supported: Win XP/ 2000/ Me/ 98/ 98SE; Mac OS 9.x/ X.
● Supports 1 device address and up to 3 endpoints: Control (0)/ Bulk Read (1)/ Bulk Write (2)/ Interrupt (3), and 3 optional Bulk Read/ Write endpoints pair.
● Integrated USB 2.0 transceiver and Serial Interface Engine (SIE).
● Integrated 8051 micro-controller with enhanced feature:
   - Supports 24MHz clock rate.
   - 1 clock per instruction cycle.
   - Embedded 48KB Mask ROM and 384B SRAM.
   - Supports external 64KB ROM/ Flash for design flexibility.
● Supports firmware upgrade via USB interface.
● Supports external flash read/ write for firmware customization.
● Supports serial EEPROM 93C46 interface for the flexibility of vendor or firmware parameters with EEPROM size up to 128 Bytes.
● High efficiency card interface hardware engine for data transfer.
● CompactFlash ^TM interface:
   - Supports address up to 16 bits, with fix and incremental mode.
   - Supports 8 / 16 bit data mode and different timing.
   - Supports WAIT# detection.
   - Supports multi signal level (3.3 / 5V).
   - Other control signals like CD1#, CD2#, CE1#, CE2# ...etc.
● SmartMedia ^TM interface:
   - Supports address up to 4 bytes, 8 bit data width and different speed.
   - Supports different page size, and automatic append redundant area data (8/16 bytes).
   - Hardware ECC generation and verification.
   - Supports firmware correct page ECC error capability.
   - Supports automatic page copy (source page read + destination page write).
● xD interface:
   - Supports address up to 4 bytes, 8 bit data width and different speed.
   - Supports different page size, and automatic append redundant area data (8/16 bytes).
   - Hardware ECC generation and verification.
   - Supports firmware correct page ECC error capability.
   - Supports automatic page copy (source page read + destination page write).
● MemoryStickPro ^TM interface:
   - Complies with MemoryStickPro interface specification.
   - Supports hardware BS/SDIO/SCLK signals.
   - Supports hardware 4 bit data bus.
   - Supports automatic CRC16 generation and verification.
   - Supports hardware CMD timeout detection.
   - Supports different clock rate up to 24 MHz.
● MemoryStick ^TM interface:
   - Complies with MemoryStick interface specification.
   - Supports hardware BS/SDIO/SCLK signals.
   - Supports hardware 1 bit data bus.
   - Supports automatic CRC16 generation and verification.
   - Supports different clock rate up to 24 MHz.
● Secure Digital ^TM / Multi Media Card ^TM interface:
   - Complies with Secure Digital / MMC interface specification.
   - Supports both SD / MMC mode access: CLK/CMD/DAT0/DAT1/DAT2/DAT3.
   - Command transmit and response receive can be enabled separately.
   - Automatic CRC7 generation for command and CRC7 verification for response on CMD.
   - Supports automatic CRC16 generation and verification on DAT3-0.
   - In addition to full packet transaction, optional single byte/ bit operation on both CMD and DAT line / lines.
   - Data processing in block or byte.
   - Supports different clock rate from 375 KHz to 24 MHz.
● Dedicated power control pins for different cards and power / busy indication.
● Built-in power-on reset (POR).
● 3.3 Volt operation.
● Pin assignment fits to card sockets to provide easier PCB layout.
● 128-pin TQFP package is available.

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