Intel D2550DC2 Product guide for Intel Desktop Board D2550DC2 - Page 16

Legacy Input/Output (I/O) Controller

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Intel Desktop Board D2550DC2 Product Guide Figure 2 shows the default assignment of the back panel audio connectors. Item A B C Description Line In Line Out Mic In Figure 2. Back Panel Audio Connectors NOTE The back panel audio line out connector is designed to power amplified speakers or headphones only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output. Legacy Input/Output (I/O) Controller The legacy I/O controller provides the following: • Low pin count (LPC) interface • Serial IRQ interface compatible with serialized IRQ support for PCI systems • Intelligent power management, including a programmable wake up event interface • PCI power management support • Low pin count (LPC) interface 16

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Intel Desktop Board D2550DC2 Product Guide
16
Figure 2 shows the default assignment of the back panel audio connectors.
Item
Description
A
Line In
B
Line Out
C
Mic In
Figure 2.
Back Panel Audio Connectors
NOTE
The back panel audio line out connector is designed to power amplified speakers or
headphones only.
Poor audio quality occurs if passive (non-amplified) speakers are
connected to this output.
Legacy Input/Output (I/O) Controller
The legacy I/O controller provides the following:
•
Low pin count (LPC) interface
•
Serial IRQ interface compatible with serialized IRQ support for PCI systems
•
Intelligent power management, including a programmable wake up event interface
•
PCI power management support
•
Low pin count (LPC) interface