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January 17, 2000 |
Hitachi Releases SH7622 SH2-DSP
with On-Chip PC Standard Interface USB Function - Ideal for multimedia products such as digital still cameras and MP3 players that can be connected to a PC - |
Hitachi, Ltd. (TSE: 6501) today announced the SH7622 as an addition to the SH2- DSP Series 32-bit RISC microcomputer lineup, with on-chip USB (Universal Serial Bus) function, for use in multimedia products such as digital still cameras and MP3*1 players that can be connected to a PC. Sample shipments will begin in April 2000 in Japan. Recently, the USB, offering higher speed and commonality with the keyboard interface, etc., has replaced such usual interfaces as RS-232C and IrDA (Infrared Data Association) as the standard interface for connecting PC peripherals. The USB interface has consequently become widely used for printers and other peripherals, and is also provided in multimedia products designed to be connected to a PC, such as digital still cameras and MP3 players, making it possible to transfer large capacity of data, including audio or image, at high speed. This trend has led to a growing demand for USB interface support by the devices installed in such products. To meet this need, the new SH7622 includes a USB function in addition to a high- performance SuperH(TM) RISC engine family*2 "SH-2" 32-bit CPU core and DSP (Digital Signal Processor) functions. The provision of DSP functions enables audio, image, and other digital signals to be processed at high speed, while the on-chip USB function makes it possible to reduce the number of component parts and to achieve higher system performance while reducing system size and cost. The SH7622 offers the highest performance in the SH2-DSP Series of 130 MIPS/200 MOPS at a 100 MHz operating frequency, making it ideal for use in high- performance multimedia products such as digital still cameras and MP3 players that require high-speed processing of digital data such as JPEG*3, ADPCM*4 and MP3. The on-chip USB function supports interrupts, control, and bulk transfer, simplifying the design of products equipped with a USB interface. On-chip memory consists of 8-kbyte cache and 16-kbyte RAM, enabling the calculating performance of the DSP to be used to the full. In addition, the on-chip RAM can store CPU instructions as well as data to be processed, allowing fast realtime processing. A dual power supply configuration is used, with power supply voltages of 1.9 V and 3.3 V. While the peripheral I/O pins use 3.3 V, internal logic operates at a low voltage of 1.9 V to hold down power consumption, making the SH7622 ideal for use in battery-powered portable products. The CPU instruction set is upward-compatible with the SH-1 and SH-2, and the DSP's arithmetic logic unit has the same instruction set as the SH3-DSP, enabling SH-1 and SH-2 software to be used by the CPU, and SH3-DSP software to be used by the DSP. The SH7622 uses a 0.18 um CMOS process, and is available in three kinds of package: a 208-pin LQFP, 216-pin LQFP, and 216-pin CSP. Development cross- software and the E8000 and E10A emulators are available as a development environment. The SH2-DSP Series lineup will be further extended in the future to support a variety of peripheral functions, and development will also continue on products designed for lower power consumption. Notes: 1. MP3: MPEG-1 audio layer 3. MPEG: Moving Picture Experts Group. MPEG is an international standard for compression/decompression of color moving pictures including audio, such as video. MP3 is a compression/decompression standard of audio part of MPEG standard. 2. SuperH is a trademark of Hitachi, Ltd. 3. JPEG: Joint Photographic Experts Group, an international standard for color still image compression/decompression. 4. ADPCM: Adaptive Differential Pulse Code Modulation, an audio compression/decompression method using differentials. < Typical Applications > - Multimedia products such as digital still cameras, MP3 players, and digital video camcorders - Information terminals such as PDAs - Printers for digital still camera, scanners, and storage devices < Prices in Japan > (For Reference) Product Name Operating Package Price in 10,000-unit Frequency quantities (Yen) HD6417622F80 80 MHz LQFP-208 2,700 HD6417622F100 100 MHz LQFP-208 2,800 HD6417622FL80 80 MHz LQFP-216 2,750 HD6417622FL100 100 MHz LQFP-216 2,850 HD6417622BT80 80 MHz CSP-216 2,800 HD6417622BT100 100 MHz CSP-216 2,900
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WRITTEN BY Secretary's Office (C) Hitachi, Ltd. 2000. All rights reserved. |