Gitratech currently uses the SMI 324 controller in the USB Flash Drives we manufacture. Please note this is subject to change
without prior notice.
SMI324 USB Flash Drive Controller
Information:
The SM324 is a highly compatible, and
hi-performance USB2.0 Flash Drive controller intended for supporting NAND type
Flash memory and SPI interface on one chip. The SM324 integrates a high-speed
USB2.0 Transceiver Macro-cell Interface (UTMI) transceiver, a Serial Interface
Engine (SIE) and an enhanced 80C51 compatible 8-bit microprocessor. By
complying with USB specification ver.2.0 and USB Mass Storage Class
specification ver.1.0, the SM324 can be supported by Windows XP/2000/Me default
driver. Also it is supported in Windows 98/98SE, Mac and Linux operating
system. For the power consumption consideration, the SM324 complies with USB
power specification ver.2.0 for bus-powered devices. And for the USB2.0 Flash
Drive application, the SM324 supports up to 8 data Flash banks and “Write
Protect” security function. The SM324 is designed specifically for high-speed
performance and high capacity USB2.0 Flash Drives. These USB2.0 Flash Drives
can be used as removable storage disk for data exchange applications. With
SM324’s complete software support, users can easily use USB2.0 Flash Drives for
backup, and security. The objective of the SM324 controller is to drastically
increase the USB Flash memory data transfer rate as well as reduce the overall
system cost by offering a manufacturing-ready turnkey solution to customers.
The SM324 is available in 64-pin LQFP package.
Features:
- Complete USB specification ver.2.0
compatibility
- Complies with USB Mass Storage Class
specification ver.1.0
- Bulk Only transport protocol
- Complies with USB power specifications for
bus-powered devices
- Operating system supported: Windows
XP/2000/Me/98/98SE, Mac OS 9.x and above, Linux Kernel 2.4 and above.
- Master & Slave SPI (Serial Peripheral
Interface) for flexible applications.
- ISP (In System Programming) firmware update
capability.
- Supports dual channel for Flash memory,
averaged data transfer rate up to 32* MB/sec
- Compatible with SLC NAND type Flash and up to
8 banks
- Supports MLC Flash Memory with 4 symbols
(bytes) ECC engine.
- Supports VID, PID, serial number & vendor
information update
- Provides LED indicator when USB Flash Disk is
in Ready/Working mode
- Supports “Write Protect” security function to
protect data in UFD
- Supports suspend and wake-up resume
- Integrated 80C51 compatible 8-bit
microprocessor with enhanced feature
- 12MHz crystal driver circuit
- Fabricated in 0.16um CMOS process
- 1.8 Volts low power core operation
- Operates on a single power supply (Vdd = 5.0V)
- Available in LQFP 64-pin (9x9mm including
pads) package