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Ethernet NIC שמות המגישים : שרף יאיר 029368677 כמוס נעם 028884807 שם המנחה : בֹעז מזרחי
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Abstract: As a part of a system to broadcast compressed video signal to the network without using host computer resources. We are building an Ethernet interface card that functions as a translator between the video compressing mechanism and the Ethernet. As a first stage this card is installed in a host computer (which is in charge of initialization) using ISA interface. In this stage our NIC functions both as a translator from the video compressing mechanism to the net and as a standard NIC with ISA interface. In the future a processing unit on the card will control all the initialization functions preformed now by the host computer so that the system will be completely ‘stand alone’.
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Specifications The interface to the Ethernet is preformed by an AMD MACE 10Kbit/sec controller. Physical connection to the network is through a Pulse magnetics transformer and RJ45 connector. Compressed video is received via a 20 pin wide data bus which is controlled by I2C. Interface to the host computer is through the ISA bus. All interfaces are implemented by an Altera FLEX device.
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DATA FLOW SCEME Interface translation Ethernet interface Aux. data bus ISA interface 16 bit 20 bit 16 bit 16 bit I2C
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MACE FIFO 4k*18 Isa Bus Connector ALTERA 10K70 MACE AM79C940 PULSE PE68025 RJ-45 Receive FIFO 4k*18 Transmit FIFO 4k*18 Auxiliary Bus Connector 16 Block diagram I 2 C bus connector I 2 C Bus controller PCF8584 8 16
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