VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE - Silicon Laboratories - #1

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Rev. 1.4 12/10 Copyright © 2010 by Silicon Laboratories Si3000 Si3000 VOICEBAND CODEC WITH MICROPHONE/SPEAKER DRIVE Features Complete voice codec solution includes the following: Applications Description The Si3000 is a complete voice band audio codec solution that offers high integration by incorporating programmable input and output gain/attenuation, a microphone bias circuit, handset hybrid circuit, and an output drive for 32 ƒÇ headphones. The Si3000 can be connected directly to the Si3034, Si3035, Si3044, and Si3056 North American and international DAA chipsets through their daisy-chaining serial interface. It also serves as a companion chip to a FAT ISOmodem chipset with voice features, providing hardware support for a handset and speaker phone. The device operates from a single 3.3 to 5 V power supply and is available in a 16-pin small outline package (SOIC). Functional Block Diagram ƒÞ84 dB ADC Dynamic Range ƒÞ84 dB DAC Dynamic Range ƒÞ4–12 kHz Sample Rates ƒÞ30 dB Microphone Pre-Amp ƒÞProgrammable Input Gain/Attenuation: –34.5 dB to 12 dB ƒÞProgrammable Output Gain/Attenuation: –34.5 dB to 12 dB ƒÞSupport for 32 ƒÇ Headphones ƒÞ3:1 Analog Input Mixer ƒÞ3.3–5.0 V Power Supply ƒÞDirect Serial Interface to DSPs ƒÞDirect Connection to Si303x/44/56, serial interface DAA chipsets ƒÞLow profile 16-Pin SOIC Package ƒÞRoHS-compliant package available ƒÞModem Voice Channel (DSVD) ƒÞTelephony ƒÞSpeech Processing ƒÞGeneral Purpose Analog I/O ƒÞCompanion chip for FDX ISOmodems with voice features Digital InterfaceProg Gain/AttenuatorADCDACHandset HybridHeadphone DriverHigh Pass Filter0/+10/+20/+30 dB0/+10/+20 dB0/–6/–12/–18 dB0/–6/–12/–18 dBMBIASMICLINEIHDSTSPKRRSPKRLLINEOMCLKSCLKFSYNCSDISDORESETProg Gain/AttenuatorSi3000 Ordering Information: See page 29. Pin Assignments Si3000 21345678151614131211109SPKRRMBIASHDSTSDISDOMCLKSCLKLINEOGNDVAVDLINEIMICRESETSPKRLFSYNC