1. Ethernet NIC שמות המגישים : שרף יאיר 029368677 כמוס נעם 028884807 שם המנחה : בֹעז מזרחי

2. 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’.

3. 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.

4. DATA FLOW SCEME Interface translation Ethernet interface Aux. data bus ISA interface 16 bit 20 bit 16 bit 16 bit I2C

5. 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