Hardware Configuration | Diamond Systems MM-HP specification

4. Hardware Configuration

Quick List of Configuration Options

Base address options: 220, 230, 240, 250 Hex; Selected via plug and play configuration

Interrupt levels:	5, 7, 9, 10, 11, 12, 15; Selected via plug and play configuration
DMA levels:	0, 1, 3; Selected via plug and play configuration
Volume control:	A. Full volume, volume controlled in software only.
	B. External stereo potentiometer control plus software control.
	Volume control method is selected via jumper setting
Stereo jacks:	Output jack can be either stereo speaker output or stereo line out;
	Input jack can be either stereo line in or mono microphone in

Address / Interrupt / DMA Configuration

The board’s base address, interrupt level, and DMA level are set at driver installation time. Jumper block J9 is used to select which plug and play options are available. The diagram on page 8 explains all the valid jumper settings. For normal installation, select IRQ E = 11, IRQ F = 12, and Internal ROM.

Speaker Configuration

The audio amplifier volume is always controllable in software via the volume control application included, as well as other SoundBlaster Pro compatible volume control software. It can be additionally controlled with an external stereo 100KΩ potentiometer, if desired. J10 selects this option. See page 8 for configuration instructions.

Stereo Jack Configuration

Crystal-MM-HP provides two 3.5mm stereo jacks for convenience. Many PC speakers and microphones use standard 3.5mm diameter stereo jacks for connection. The signals appearing on these jacks are controlled by configuration header J11 located immediately to the left of these jacks near the bottom of the board. Refer to the drawing on page 9 for valid jumper settings.

J5 (upper jack) is the output jack and can be configured for either Speaker Out or Line Out. Both settings are stereo, with the following conventions: Tip = Left, Ring = Right, and Shield = Common.

J6 (lower) is the input jack and can be configured for either Line In or Microphone In. Note that Crystal- MM-HP supports only a mono microphone input. If a mono microphone is used, then either jumper setting will provide the same connection. If a stereo microphone is used, then either the left or right channel can be used, but not both. For Line In configuration, Tip = Left, Ring = Right, and Shield = Common.

CRYSTAL-MM-HPUser Manual v2.0 September 2007 Diamond Systems Corporation

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