1. General Description
The RTS5105 is a high performance USB 2.0 card reader controller that integrates USB 2.0 PHY and SIE, 8051 MCU,
ROM, RAM, and memory card controller on a single chip. It supports access to Memory StickTM, Memory Stick PROTM ,
SecureDigitalTM, MultiMediaCardTM, and NAND flash memory. With the built-in high-speed USB 2.0 device controller,
the RTS5105 provides a 480Mbps transfer rate in addition to full-speed 12Mbps of the USB 1.1 specification.
Designed with an enhanced power control circuit, the RTS5105 fully complies with USB power specifications for
bus-powered devices, making it capable of bus-powered operation. Confirming to USB Mass Storage Class Specification,
RTS5105 provides plug and play convenience without any driver installation effort.
The external serial EEPROM interface provides flexibility in storing customer USB Vender ID, Product ID, and also
customer content such as vendor information, product information, revision level, and serial number. The RTS5105
provides an In-System Programming (ISP) capability for manufacturing flexibility; the customer information is
programmed into the external EEPROM at production. This four-bit EEPROM interface can be programmed to function as
With a few external components required, the LQFP 64-pin packaged RTS5105 provides the best cost/performance for
high-performance USB2.0 flash memory card reader/writer applications.
Compliant with Universal Serial Bus Specification Revision 2.0
Compliant with USB Mass Storage Class Bulk only Transport Specification Rev. 1.0
Supports High-speed (480Mbps) and Full-speed (12Mbps) Data Transfer
Supports USB bus power operation
Supports Control, Bulk and Interrupt USB data pipes
Supports the following memory card interfaces:
-Secure Digital TM (SD), MultiMediaCard TM (MMC)
-Memory Stick TM (MS), Memory Stick PROTM (MS-PRO)
-NAND Flash Memory
Supports hardware ECC (Error Correction Code) function
Supports hardware CRC (Cyclic Redundancy Check) function
Programmable clock rate for flash memory card interfaces
Supports MS/MS-PRO 4-bit parallel transfer mode
Support MMC 4.x for 1/4-bit data mode with 26Mhz
Integrated Fast 8051 microprocessor
Realtek Semiconductor Corp.