Ampro Corporation 5001451A manual DC Power, Power Requirements, Other Voltages

Little Board P6d Module

DC Power

The power connector J10 is a 7-pin polarized connector. Refer to Table 2-3for power connections and Table 2-4for mating connector information.

Caution

To prevent damage to the Little Board P6d or its power connector, ensure the power plug is wired correctly before applying power to the module!! See Table 2-3.

Table 2-3. Power Connector (J10)

Pin #	Signal Name		Function
1, 7	+5VDC	+5VDC ±5% input
2, 3, 6	Ground	Ground return
4	+12VDC	+12VDC ±5% input
5	+3.3VDC	+3.3V ±5% input
		(Only required for some PCI expansion boards)
	Table 2-4. J10 Mating Connector
	Connector Type		Mating Connector
	DISCRETE WIRE		MOLEX HOUSING 09-50-8073
			Pins 08-52-0071

Power Requirements

The Little Board P6d module requires only +5VDC (±5%) for operation. The voltage required for the RS232 ports is generated on-board from the +5VDC supply. An on-board low-voltage power supply circuit provides power to low-voltage CPUs and certain other on-board components.

The exact power requirement of the Little Board P6d system depends on several factors, including the CPU speed, the peripheral connections, and which, if any, MiniModule products or other expansion boards are attached. For example, the keyboard draws its power from the board, and there can be some loading from the serial, parallel, and other peripheral ports. Consult the specifications in Chapter 3 for the basic power requirements of your model.

Other Voltages

There may be a requirement for an external +12 volt supply, depending on what peripherals you connect to the Little Board system. For instance, +12V is required for most flat panel backlight power supplies. You can connect a +12V supply to the Little Board module through the power connector, J10. This will supply +12V to the ISA and PCI portions of the PC/104 expansion busses. Similarly, you can connect -12V and -5V to the Utility Connector, to supply those voltages to both expansion busses. Pinouts for the Utility Connector are provided in Table 2-4.

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