Manufacturers
DIAMOND SYSTEMS Emerald-MM-8
Description
Diamond Systems Emerald-MM-8 8 PORTS, RS-232/422/485 Protocols, 8 Digital I/O
Part Number
Emerald-MM-8
Price
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Manufacturer
DIAMOND SYSTEMS
Lead Time
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Category
PRODUCTS - E
Datasheet
Extracted Text
EMERALD-MM-8 8-Port RS-232/RS-422/RS-485 PC/104 Module 8 serial ports 8 digital I/O lines Jumper selectable RS-232, RS-422, RS-485 on all ports Up to 460.8kbps data rate 16C654 Quad UARTs with 64-byte FIFOs Interrupt sharing - any no. of ports or boards DESCRIPTION SPECIFICATIONS Now with higher density than ever, our new Emerald- Number of ports 8 MM-8 gives you 8 serial ports on a single PC/104 module. Protocols RS-232, RS-422, RS-485 Each version of the board provides 8 serial ports operat- Supported ing at speeds up to 460.8kbps. Several versions are avail- Max Baud Rate 460.8Kbps able: Communications 5,6,7 or 8 data bits; Even, odd or no parity Base UART 16C654 EMM-8M-XT: 8 ports RS-232/422/485 user selectable FIFO 64 bytes EMM-8232-XT: 8 ports fixed RS-232 (low-cost version) Protocol Config Jumper Address / Interrupt Jumper In RS-232 mode, the full complement of standard PC serial Configuration port signals (8 signals + ground) are provided for each Digital I/O 8 individually prog. port. In RS-422 mode, Signals RX+, RX-, TX+, and TX- are Short protection Continuous, all outputs provided, along with ground. In RS-485 mode, signals Bus Interface PC/104 (ISA) TX+/RX+ and TX-/RX- are provided, along with ground. Power Draw +5VDC±10% Ports are grouped 4 per 40-pin I/O header. Ports 1-4 are on (typical) the right, and ports 5-8 are on the left. Operating temp -40°C to +85°C Weight 2.6oz / 74g 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. www.diamondsystems.com 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 inter- vention, the board provides 4 different hardware configurations. Full Interrupt Sharing Interrupt levels are individually programmable for each port. The available interrupt levels are 2, 3, 4, 5, 6, 7, 10, 11, 12, and 15. In addition, a 1K Ohm pulldown resistor is provided for each port and is selected with a jumper. Any number of ports can share the same interrupt level. And if you have two boards in one system, both boards can share the same interrupt level as well. An interrupt status register is provided to indicate the status of each serial port's interrupt request signal. This register is especially useful in Windows NT. ORDERING INFORMATION Part No. Description EMM-8M-XT Emerald-MM 8-ch RS-232/422/485 extended temp. FOR MORE INFORMATION Diamond Systems Corporation 1255 Terra Bella Avenue Mountain View, CA 94043 Tel: 650-810-2500 Fax: 650-810-2525 techinfo@diamondsystems.com www.diamondsystems.com
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