Hitachi, Ltd. (TSE: 6501) today announced the HD644601BP PCI bus bridge LSI with an on-
chip synchronous DRAM (SDRAM) controller, as a peripheral LSI chip-set for use in
combination with a Hitachi SH-4 Series RISC processor, for network devices and multimedia
products that use a PCI bus*1. Sample shipments will begin in July 1999 in Japan.
The PCI bus is widely used as a high-performance standard bus for personal computers, but with
the recent fall in the price of LSIs with a built-in PCI interface, this bus is also becoming a
standard in the embedded systems field.
Hitachi's SH-4 Series comprises the top-end models in Hitachi's SuperH? RISC engine family*2
of RISC microcomputers for embedded systems, using a superscalar system which allows
simultaneous execution of a number of instructions, and offering a maximum performance of 360
MIPS at 200 MHz frequency. The SH-4 Series also supports floating-point operations, offering
a major improvement in image processing and similar digital signal processing performance.
Known for their low power consumption and their excellent code efficiency resulting from the
use of 16-bit fixed-length instructions, these microcomputers are used in such devices as
handheld PCs installed with Windows(R) CE*3.
However, as we approach the advent of the multimedia age, in addition to high-speed processing
on a par with personal computers, the need to embedded systems is also to support for Ethernet,
IEEE1394, and similar peripheral interfaces and so on. With this in mind, Hitachi has developed
the HD644601BP providing support for the PCI bus, which can be used by a wide variety of
personal computer peripheral devices, and also incorporating an SDRAM controller.
The HD644601BP can be directly connected to the external bus (100 MHz maximum operating
frequency, 32-bit width) of the SH-4 series (SH7750) without external circuit, enabling fast
access from the SH7750. The HD644601BP's on-chip PCI interface conforms to the PCI Rev.
2.1 standard, allowing easy connection of a 32-bit, 66 MHz/33 MHz PCI device to an SH7750
via the external bus. The SDRAM interface allows connection of a maximum 64 Mbytes of
SDRAM with an operating frequency of up to 100 MHz, and the on-chip SDRAM controller
permits the use of SDRAM as shared memory accessible by both the SH7750 and the PCI device.
In addition, data transfer is possible between the connected SDRAM and PCI bus even when the
SH7750's external bus is being used by another device.
Used the package is a 256-pin plastic BGA.
Use of an SH7750 and HD644601BP in kit form will simplify the implementation of a system
with an SH-4 Series core in such fields as network devices, amusement machines, and control
equipment.
Notes: 1. PCI (Peripheral Component Interconnect): A bus standard formulated by the PCI
Special Interest Group, currently standardized on 33 MHz and 66 MHz bus clock
rates.
2. SuperH(TM): SuperH is a trademark of Hitachi, Ltd.
3. Windows(R): Windows is a registered trademark of Microsoft Corporation in the
USA and other countries.
< Applications >
Information and OA product fields:
Network devices, printers, scanners, copiers
Industrial field:
Measurement and analysis equipment, control equipment
Consumer field:
Multimedia devices, game machines and other amusement machines
< Specifications >
Item Specifications
CPU interface SH-4 MPX-SRAM interface, max. 100 MHz, 32-bit
SDRAM interface Max. 100 MHz, 32-bit, max. SDRAM capacity: 64 Mbytes
PCI interface Conforming to PCI Rev. 2.1, 66 MHz or 33 MHz, 32-bit
Power supply voltage 3.3 V
Package 256-pin BGA
< Prices in Japan > (For Reference Only)
Product Code Sample Price (Yen)
HD644601BP 4,200 |