IBM NetVista X40, Technical Information Manual

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6
Technical Information
• Support for up to five-meter cable length from host to hub or hub to hub
• Guaranteed bandwidth and low latencies appropriate for specific devices
• Wide range of packet sizes
• Limited power to hubs
For information on the connector pin assignment for the USB interface, see “USB port
connectors” on page 31.
Audio Subsystem
Your computer comes with an integrated audio controller that is capable of playing
and recording sounds. It supports SoundBlaster, Adlib, and Microsoft Windows
Sound System applications.
The device drivers for the preinstalled audio controller are on the hard disk. The
device drivers are also available on Product Recovery CDs that come with your
computer.
If you connect an optional device to the audio adapter, follow the instructions
provided by the manufacturer.
Note: Additional device drivers might be required. If necessary, contact the
manufacturer for information on these device drivers.
The following connectors are available on the audio adapter or integrated audio
controller:
• Line Out port for connecting powered speakers or headphones. You must
connect a set of speakers to the Line Out port to hear audio from the adapter.
These speakers must be powered with a built in amplifier. In general, any
powered speakers designed for use with personal computers can be used with
the audio adapter. These speakers are available with a wide range of features
and power outputs.
• Line In port for connecting musical devices, such as a portable CD-ROM player
or stereo.
• Microphone for connecting a microphone.
Integrated peripheral controller
Control of the integrated input/output (I/O) and diskette drive controllers is
provided by a single module, the integrated peripheral controller (SMC FDC 87B813).
This module, which supports Plug and Play technology, controls the following
features:
• Diskette drive interface
• Keyboard and mouse ports
Keyboard and mouse ports
A general purpose 8-bit microcontroller, 8042AH compatible, controls the mouse and
keyboard subsystem. The controller consists of 256 bytes of data memory and 2 KB of
read-only memory (ROM).
The controller has two logical devices: one controls the keyboard and the other
controls the mouse. The keyboard has two fixed I/O addresses, a fixed IRQ line, and
can operate without the mouse. The mouse cannot operate without the keyboard