USB Base/Hub
This hub combination of DS2490 USB-1wire interface and the DS2409 hub. This board allow connection of three 1-wire segments to a USB port. Power is obtained from an external supply to avoid problems with the current limits imposed by USB. 2 1-wire branches are provided on the base board. A 2nd. board may be piggybacked to the primary board if additional legs are required.In addition to the interface and hub functions, several pad sets are provided to allow temperature or other 3-terminal 1-wire devices to be added to the board.A 4 channel A/D convertor is provisioned, with 1 pin of each of the 4 RJ45 connectors routed to the A/D convertor. 2 connectors are routed to a DS2423 counter chip through optical isolators.
| USB Base/Hub Read article USB Base/Hub website n952.dyndns.ws |
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