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IDT79RV3041 Datasheet(PDF) 5 Page - Integrated Device Technology |
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IDT79RV3041 Datasheet(HTML) 5 Page - Integrated Device Technology |
5 / 34 page 5 IDT79R3041 INTEGRATED RISController FOR LOW COST SYSTEMS COMMERCIAL TEMPERATURE RANGE R3041. SYSTEM USAGE The IDT RISController family is specifically designed to easily connect to low-cost memory systems. Typical low-cost memory systems use inexpensive EPROMs, DRAMs, and application specific peripherals. Figure 4 shows some of the flexibility inherent in the R3041. In this example system, which is typical of a laser printer, a 32- bit PROM interface is used due to the size of the PDL interpreter. An embedded system can optionally use an 8-bit Figure 4. Typical R3041-Based Application boot PROM instead. A 16-bit font/program cartridge interface is provided for add-in cards. A 16-bit DRAM interface is used for a low-cost page frame buffer. In this system example, a field or manufacturing upgrade to a 32-bit page frame buffer is supported by the boot software and DRAM controller. Embedded systems may optionally substitute SRAMs for the DRAMs. Finally various 8/16/32-bit I/O ports such as RS-232/ 422, SCSI, and LAN as well as the laser printer engine interface are supported. Such a system features a very low entry price, with a range of field upgrade options including the ability to upgrade to a more powerful member of the RISController family. ClkIn IDT R3041 RISController Address/ Data Control EPROM and I/O Controller DRAM Controller 16-bit DRAM 16-bit Add-on DRAM 32-bit EPROM 16-bit Font Cartridge I/O R3051 Local Bus 2905 drw 04 |
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