Intel BLKD945GPMLKR Product Specification - Page 32
Audio Subsystem
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Intel Desktop Board D945GPM Technical Product Specification 1.9 Audio Subsystem The board supports the Intel® High Definition audio subsystem based on the Sigmatel 9220/9223 audio codec. The audio subsystem supports the following features: • Advanced jack sense for the back panel audio jacks that enables the audio codec to recognize the device that is connected to an audio port. The back panel audio jacks are capable of retasking according to user's definition, or can be automatically switched depending on the recognized device type. • Stereo input and output for all back panel jacks • Line out and Mic in functions for front panel audio jacks • A signal-to-noise (S/N) ratio of 95 dB 1.9.1 Audio Subsystem Software Audio software and drivers are available from Intel's World Wide Web site. For information about Refer to Obtaining audio software and drivers Section 1.2, page 15 1.9.2 Audio Connectors The board contains audio connectors on both the back panel and the component side of the board. The front panel audio connector provides mic in and line out signals for the front panel. For information about The location of the front panel audio connector The signal names of the front panel audio connector The back panel audio connectors Refer to Figure 17, page 56 Table 18, page 57 Section 2.7.1, page 54 1.9.3 8-Channel (7.1) Audio Subsystem The 8-channel (7.1) audio subsystem includes the following: • Intel 82801GH I/O Controller Hub (ICH7DH) • Sigmatel 9220/9223 audio codec • Microphone input that supports a single dynamic, condenser, or electret microphone The back panel audio connectors are configurable through the audio device drivers. The available configurable audio ports are shown in Figure 9. For information about The back panel audio connectors Refer to Section 2.7.1, page 54 32