Santa Clara, Calif.--Sept. 26, 1997--Integrated Memory Logic Inc. (IML; Santa Clara) announced their 10X speed DVD-ROM controller chip.
The IML2101 is designed for use in DVD-ROM drive systems that interface to industry standard DRAM, digital signal processors (DSPs), and microcontrollers. The chip integrates a buffer manager, CD/DVD-ROM decoder, ECC engine, microcontroller interface, and ATAPI host interface.
The IML2101 is capable of sustaining transfer rates of 10X speed for DVD-ROM applications and 55X speed for CD-ROMs. This is equivalent to 13.8 Mbytes per second data transfers for the 10X DVD-ROM and 8.2Mbytes per second for the 55X CD-ROM.
The controller's superior performance is achieved through several industry standard features as well as IML's own patent pending features. The IML2101 implements industry standard Ultra DMA modes 1and 2 for fast 33.3 Mbytes per second transfers, a 16-bit DRAM interface and fast "on-the-fly" error correction. IML's patent pending architecture enhancements include an automated cache, host, and disk manager and highly integrated ATAPI sequencers.
The IML2101 is based on a new architecture that optimizes firmware development and bandwidth efficiency. The unique buffer management system allows designers to select various types of DRAMs, including 60ns Fast Page Mode and 35ns EDO DRAMs, to accommodate the system's performance and cost requirements.
When performing on-the-fly IED check and correction and EDC detection, the IML2101 reduces ECC bandwidth by as much as 50 percent because the controller performs error correction only when errors occur. The controller also reduces host CPU utilization by more than 50 percent.
The IML2101 also supports seamless constant angular velocity (CAV) audio playback technology. This feature enables the chip to buffer audio data at the maximum 10X DVD or 55X CD data rate and then play back at the required 1X audio rate, thus improving performance while reducing stress on the drive's mechanical components.
The IML2101 consumes very little power at 0.5 W typical and also provides a sleep mode and an automatic wake-up mode to improve system power efficiency.
The IML2101 maintains firmware and architecture compatibility with the IML1102 and IML1101 CD-ROM controllers, assuring a migration path for future customer designs. IML's optical storage roadmap will encompass the IEEE 1394 interface, DVD-RAM controllers and further single-chip integration.
The IML2101 DVD-ROM controller is supplied in a 144-pin thin quad flat pack (TQFP) package and is priced at $8 in 10,000 unit quantities. The device is sampling in October with full production volumes scheduled for late fourth quarter 1997.
A reference design kit including drive, firmware source code written in the C language and device drivers will be made available to OEM customers.
Integrated Memory Logic
2953 Bunker Hill Ln. Suite 204
Santa Clara, CA 95054
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