CMI9761A Features
Basic features:
` 6 channel, 16-bits DACs with SNR > 90 dB.
` 2 channel, 16-bits ADCs with SNR > 85 dB.
New features of AC'97 2.3 codec:
` Digital PC Beep support.
`2 Stereo microphone support.
` Extensive jack detection via proprietary resistors network method that can monitor plugging status of every jack.
` Precise advanced impedance sensing function for audio device class discoverability.
Miscellaneous features:
` Compliant with Intel® AC'97 Rev 2.3 Spec.
` Meeting with Microsoft® PC2001 requirements
` Built-in 14.318MHz to 24.576MHz PLL, which can save the BOM cost of external crystal.
` Advanced power management and power saving capabilities.
` Industry standard 48-lead LQFP package.
` Analog power supply is 5V, digital power supply is 3.3V.
Versatile I/O & functionalities support:
` Stereo Line-in function shared with Surround out.
` Stereo Microphone function shared with Center/LFE out.
` High quality pseudo-differential analog CD Audio input.
` Dual analog & digital PC BEEP support.
` AUX legacy analog I/O support.
` 2 GPIO (General Purpose I/O) support.
` EAPD (External Amplifier Power Down) support.
` S/PDIF I/O function:
Output: 96 / 48 kHz with 24 / 20 / 16 bits
Input: 48 / 44.1 / 32 kHz with 20 / 16 bits
S/PDIF In is featured with interrupt, auto-lock, anti-noise, and
anti-distortion functionalities support.
Valuable add-on software technology:
` CMI9761A+ supports Dolby® Digital Interactive Content Encoder (DDICE) for easy-connection with consumer acoustics as media center/game console applications
` Xear3D™ sound support, including Earphone Plus and 5.1CH
SPEAKER SHIFTER.
` Sensaura® HRTF 3D positional sound support.
` Support most industry standards of PC 3D sound for gaming, including Creative EAX™ 2.0 / 1.0 , Microsoft DirectSound™ 3D, A3D™ 1.0 and more.
` Unique karaoke function support featured with microphone echo, key shifting, and vocal cancellation.
` 10-band equalizer with 12 pre-set settings.
` 27 kinds of listening environments support together with 3 kinds of room sizes emulation.
` Dynamic AGC(auto-gain control) technology.
CMI9761A Connection Diagram

- ·CMI8768
- ETC [ETC]
- PCI 8CH Integrated Sound Chip
- 867212 KB

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