STAC9705 Datasheet | SigmaTel

DESCRIPTION: Sigma Tel’s STAC9705 is a general purpose 18-bit, full duplex, audio codec with integrated modem analog front end (AFE) that conforms to the analog ponent specification of AC 97 (Audio Codec 97 ponent Specification rev. 2.0). The audio DACs, ADCs, and mixers are integrated with analog I/Os which include four analog line-level stereo inputs, two analog line-level mono inputs, and 5 output channels. The modem AFE includes a fully differential ADC and DAC along with 12 GPIOs for DAA interface. Also included are an extra audio ADC for hands free operation and an extra stereo line out for headphones or speaker amplifiers. The STAC9705 municates via the five wire AC Link to any digital ponent of AC 97 providing flexibility in the audio system design. Packaged in an AC 97 pliant 64-pin TQFP, the STAC9705 can be placed on the motherboard, daughter boards, add-on cards, PCMCIA cards, or outside the main chassis such as in a speaker. Features : - High performance Σ ∆ technology - 18-bit full duplex stereo A/D, D/A - AC-link protocol pliance - Additional audio A/D for MIC record - AC 97 pliant mixer - Energy saving power down modes - Modem Analog Front End (AFE) - Six analog line-level inputs - Available in 64-pin TQFP - Extra Stereo Line Out 09/24/98 ORDERING INFORMATION: PART NUMBER STAC9705T PACKAGE 64-pin TQFP 10mmx 10mm x 1.4mm TEMPERATURE RANGE 0o C to +70o C SUPPLY RANGE DVdd = 3.3V or 5V, AVdd = 5V 09/24/98 Sigma Tel, Inc Preliminary Table of Contents 3.1.2.8 Slot 12: IO Status 3.2 AC-link Low Power Mode General Description 3.2.1 Waking up the AC-Link Ordering...