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The AM79C970AVC-G is a single-chip Ethernet controller manufactured by Rochester Electronics, LLC. It serves as a highly integrated solution for PCI local bus applications, supporting ISO 8802-3 and IEEE/ANSI 802.3 standards. The device features a bus-mastering architecture with an integrated DMA Buffer Management Unit to minimize CPU utilization. It includes individual 136-byte transmit and 128-byte receive FIFOs for frame buffering. The component operates on a single +5 V power supply and supports Microwire EEPROM interfaces for jumperless design configurations.
Verify the specific suffix 'AVC-G' against official Rochester Electronics documentation to confirm pinout and package details. Ensure the source document explicitly lists this part number variant. Confirm that the Microwire interface and voltage requirements match the target system design before procurement.
Select this component for systems requiring a PCI-based Ethernet controller with low CPU overhead. Verify compatibility with existing driver software, specifically Am2100/Am1500T or Novell NE2100/NE1500 drivers. Ensure the design accommodates the single +5 V power supply requirement and integrates a compatible Microwire EEPROM for configuration storage.
Rochester Electronics sustains production of licensed products that may otherwise become obsolete. This component is part of their portfolio aimed at maintaining existing technologies through close cooperation with supplier partners. The company maintains extensive wafer and die banks to manufacture device types no longer in primary production.
The datasheet indicates software compatibility with AMD’s Am7990 LANCE, Am79C90 C-LANCE, Am79C960 PCnet-ISA, Am79C961 PCnet-ISA+, Am79C965 PCnet-32, and Am79C900 ILACC register and descriptor architectures.