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Diamond EMM-8P-XT Emerald-MM 8-channel RS-232/422/485, extended temp.


SKU: EMM-8P-XT Category:
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Diamond Emerald-MM 8-channel RS-232/422/485, extended temp. EMM-8P-XT


Sale Price : CDN $75


The Emerald-MM-8 gives you 8 serial ports on a single PC/104 module operating at speeds up to 460.8kbps. In RS-232 mode, the full complement of standard PC serial port signals (8 signals + ground) are provided for each port. In RS-422 mode, Signals RX+, RX-, TX+, and TX- are provided, along with ground. In RS-485 mode, signals TX+/RX+ and TX-/RX- are provided, along with ground. Ports are grouped 4 per 40-pin I/O header. Ports 1-4 are on the right, and ports 5-8 are on the left. Two 16C654 quad serial port ICs are used for the serial ports. This chip supports data rates up to 460.8kbps and contains a 64-byte transmit and receive FIFOs for each port to minimize processor overhead. Fully Programmable Serial Ports All serial port address and interrupt level settings may be done in software. On power up, the serial ports are disabled. After programming the address and interrupt settings, the ports are enabled by setting a bit in an auxiliary control register. For applications that require the ports to be operating without user software intervention, the board provides 4 different hardware configurations.


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