Intel Pentium III Processor/840, Manual, Page: 31 / 151

Intel
®
Pentium
®
III Processor/840 Development Kit Manual 3-7
Theory of Operation
3.3.10 Audio Subsystem
The evaluation board has an integrated (on-board) AC’97-compliant audio subsystem, including
three analog line-level stereo inputs for connection from LINE IN, CD, AUX.
Audio Subsystem features:
•
Microphone input (back panel)
•
Stereo line-level (1.7 Vrms) output
•
Power management support
3.3.11 Speaker
Integrated low-cost Piezo speaker (stuffing option for 8 ohm chassis speaker).
3.3.12 82559ER LAN Controller
The evaluation board has an integrated (on-board) 82559ER LAN Controller.
82559ER Features:
•
Support of Wired for Management (WfM)
•
10/100-Mbit Ethernet controller
3.3.13 Legacy I/O
Support for legacy I/O functions is provided by the SMSC Super I/O controller.
3.3.14 Floppy Drive Support
Floppy disk drive support is provided by the SMSC Super I/O controller. One 34-pin floppy
connector is provided on the evaluation board.
3.3.15 RS-232 Ports
Two serial I/O ports provided by the SMSC Super I/O controller. Two 9-pin RS232 connectors are
provided on a single stacked connector (J1M1 & J1N1).
3.3.16 IEEE 1284 Port
One parallel port connector controlled by the SMSC Super I/O controller device is provided
(J1L1).
3.3.17 USB Port
USB support is provided through the ICH and can be used through connector J1P1.