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UPD72874 Datasheet(PDF) 1 Page - NEC |
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UPD72874 Datasheet(HTML) 1 Page - NEC |
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1 / 40 page  2001 IEEE1394 OHCI 1.1 COMPLIANT 3PORT PHY-LINK 1-CHIP HOST CONTROLLER PRELIMINARY DATA SHEET MOS INTEGRATED CIRCUIT µµµµPD72874 Document No. S15306EJ2V0DS00 (2nd edition) Date Published April 2002 NS CP (K) Printed in Japan The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. The µPD72874 is the LSI that integrated OHCI-Link and PHY function into a single chip. The µPD72874 complies with the 1394 OHCI Specification 1.1 and the IEEE Std 1394a-2000 specifications, and works up to 400 Mbps. It makes design so compact for PC and PC card application. FEATURES • Compliant with Link Layer Services as defined in 1394 Open Host Controller Interface specification release 1.1 • Compliant with Physical Layer Services as defined in IEEE Std 1394a-2000 • Provides three cable ports at 100/200/400 Mbps • Super Low power consumption for Physical Layer • Compliant with protocol enhancement as defined in IEEE Std1394a-2000 • Modular 32-bit host interface compliant to PCI Specification release 2.2 • Supports PCI-Bus Power Management Interface Specification release 1.1 • Modular 32-bit host interface compliant to Card Bus Specification • Cycle Master and Isochronous Resource Manager capable • Built-in FIFOs for isochronous transmit (2048 bytes), asynchronous transmit (2048 bytes), and receive (3072 bytes) • Supports D0, D1, D2, D3hot • Supports wake up function from D3cold • 32-bit CRC generation and checking for receive/transmit packets • 4 isochronous transmit DMAs and 4 isochronous receive DMAs supported • 32-bit DMA channels for physical memory read/write • Clock generation by 24.576 MHz X’tal • 2-wire Serial EEPROM TM interface supported • Separate power supply Link and PHY • Programmable latency timer from serial EEPROM in Cardbus mode (CARD_ON = 1) ORDERING INFORMATION Part number Package µPD72874GC-YEB 120-pin plastic TQFP (Fine pitch) (14 x 14) The mark shows major revised points. |
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