AD1881 Analog Devices, AD1881 Datasheet
AD1881
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AD1881 Summary of contents
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... MASTER VOWME to be accurate and by Analog Devices for its One Technology or other rights of third parties Tel: 781/329.4700 is granted by implication or Fax: 781/326-8703 AC'97 SoundM~ AD1881 FEATURES low Power Mixer Mode Audio Mixer Mode Port Format, Slot 16 Mode All Required WHQl Sample Rates Variable 7 kHz to 48 I< ...
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... ANALOGDEVICES fAX-ON-DEMAND HOTLINE AD1881-SPECIFICATIONS STANDARD TEST CONDITIONS UNLESS OTHERWISE Temperature 25 Digital Supply (VDD) 3.3/5.0 Analog Supply (Vce) 5.0 Sample Rate (Fs) 48 Input Signal 1008 ANALOG INPUT Parameter Input Voltage (RMS Values Assume Sine Wave Input) liNE_IN, AUX, CD, VIDEO, PHONE_IN, PC_BEEP = MIC with +20 dB Gain (M20 ...
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... VREF_Our Current Drive Mute Click (Muted Output Minus Unmuted *Gu..."'ntccd,not tested Specificationssubject to change without notice. REV Page 12 FILTERS* Referenced to Full Scale, A-Weighted) LNLVL_Our Input R, Zero 1.., Midscale DAC Output) -3- AD1881 Min .Max Typ 0 0.4 XFs :to. -74 12/Fs 0.0 .Max Min Typ 16 0 ...
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... ANALOG DEVICESfAX-ON-DE"ANDHOTLINE AD1881 STATIC DIGITAL SPECIFI CATIONS Parameter High Level Input Voltage (VIH): Digital Inputs Low Level Input Voltage (VII..) High Level Output Voltage (Vo, IoH = -0.5 mA Low Level Output Voltage (V00, IoL = +0.5 mA Input Leakage CuITent Output Leakage Current POWER SUPPLY Parameter ...
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... HI-Z Delay (ATE Test Mode) Propagation Delay NOTES 'Output jitter is directly dependent on crystal input jitter. Specifications subject to eh3Ilge WitilOut notice. REV Page 1~ OVER OPERATING TEMPERATURE Delay Delay Low -5- -~ AD1881 RANGE) .MiD Max Symbol Typ 50 tRST_LOW 833 tRST2CLK 80 tSC_HIGH 19.5 tSc_LOW 162.8 tSC2CUZ 12.288 81.4 ...
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... ANALOG DEVICESfAX-ON-DEHAND HOTLINE AD1881 .. tRST.LOW ~*4- ~12CLJ( ""'" --i BILCLK Figure 1. Cold Reset SYNC JtSVNC.I-UGH-{tRS12CLK1 BIT.CLK Figure 2. Warm Reset tcuc.LOW BIT_CLK ::: SYNC g - tSVNC_HGH tsVNC_PERlOO Figure 3. Clock Timing Tl- ,~ BIT.CLK tg SYNC SDATA_OUT tHoLD Figure 4. Data Setup and Hold - 15 Page BIT CLK ...
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... Exposurcto absolu te maximum rating conditions for extended periods may affect device reliability. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic accumulate on the human body and test equipment Aldl0ugh dle AD1881 features proprietary occur on devices subjected to high energy electrostatic precautions are recommended to avoid performance REV ...
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... Crystal Output. AC-Unk Serial Data Output, ADl881 Input Stream. AC-Unk Bit Clock. 12.288 MHz Serial Data Clock. Daisy Chain Output Clock. AC-Unk Serial Data Input. AD1881 Output Stream. AC-Unk Frame Sample Sync 48 kHz Fixed Rate. AC-Unk Reset. AD1881 Master H/W Reset. Description Daisy Chain Codec Select LSB, ADC/DAC Right Bit Streams ...
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... III I ~ --dr M~ -<9-<!14"" ""0- -@---<~)--o OxOA - § PCM G GAIN A.ATTENUATE AOxOA M..'UTE MY - MASTER VOLUME PCV Figure 8. Block Diagram Register Map -9- AD1881 ............... L.5IRS~ AD1881 LSI4) RS(4) ~ LS(3) GMOxlC l6-lilT RS(3) S ~~M ,;..AID ~ LS(I) ~ RS(I) E LS( :::~(7) ~ OXIC 1&-liIT - ROO ,... AID .. LS( RS(S) .... SOX1A L.L -< ...
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... The main architectural features of the AD 1881 are the high quality analog mixer section, two channels of~ sion, two channels of~ DAC conversion and Data Direct Scrambling (D2S) rate generators. The AD1881's left channel ADC and DAC are compatible for modem applications supporting irrational sample rates and modem filtering requirements. FUNCTIONAL DESCRIPTION ...
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... DMS DLSR X DAM ALSR MOD REV7 REV6 REV5 REV1 REV3 REV2 REVI -11- AD1881 ID3 IDl IDI IIX) ID6 ID5 IDI X RMV5 RMV'1 RlvlV3 R.'\fV2 R.'\fVI R.'\fVO 8000h ...
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... IDI ID2 ID3 ID4 ID5 ID6 ID7 IDS ID9 '1l1e AD1881 contains none of the option...t features identified by these bits. SE[4:0] Stereo Enhancement. The 3D stereo enhancement identifies the Analog Devices 3D stereo enhancement. Master Volume Registers (Index 02h) Reg Name DlS 014 013 OlZ ...
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... MIO dB dB 012 011 010 09 LLV4 LLV3 LLV2 LLVI LLVO X X -13- AD1881 PCVO X PCV3 PCV2 PCVI Attenuation PHV4 PHV3 PHYZ PHVI PHVO 8008h ...
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... ANALOGDEVICES fAX-ON-DEHAND HOTLINE AD1881 CD Volume (Index 12b) Reg DIS DI4 D13 D12 NBDlC Nwn LCV4 LCV3 LCV2 LCVl LCVO CD Volwne CVM X X 12h Right CD Volume. Allows setting the CD right channel attenuator in 32 steps. The LSB represents 1.5 dB, and RCV[4:0] the range -34.5 dB. The default value is 0 dB, mute enabled. ...
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... LIM3 LIM2 LIMI X LIMO gain xIM3 xIMO Function +22.5 dB Gain 0 0000 0 dB Gain I xxxxx dB Gain -00 -15- AD1881 RS2 RSI RSO Source RIM3 RIM2 RIMI RIMO 8000h Default; ...
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... ANALOG DEVICESfAX-ON-DEMAND H OTLINE AD1881 General Purpose Register (Index 20h) Reg D15 D14 NBlDe NUID POP X ZOh General Purpose Note: This register should be read before writing to generate a mask for only the bites) that need to be changed. The function de- fault value is OOOOh which is all off. ...
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... Note: The ready bits are read only, writing to REF, ANL, DAC, ADC will have no effect. These bits indicate the status for the AD1881 subsections. If the bit is a one, then that subsection is "reacfy." Ready is derIDed as the subsection able to perfonn in its nominal state. ...
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... ANALOGDEVICES fAX-ON-DEHAND HOTLINE AD1881 Extended Audio Status and Control Register Reg D15 Name D14 Num ExteDded Audio StlClrI X X lAh Note: The Extended Audio Status and Control Register is a read/write register that provides status and control of the extended audio features. ...
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... Change only when DACs are powered down. (2Ch). (32h) alive for notebook is starved-for data. 012 011 010 value greater than 48 kHz or less than -19- AD1881 status address and data slots with the contents SRXI0 SRXS X X ORSR X ARSR ...
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... ANALOG DEVICESfAX-ON-DEHAND HOTLINE AD1881 Sample Rate I (Index 7Ah) Reg Name D15 D14 D13 Num 7Ah Smnple Rate I SR11S SRll4 SR113 SR112 SKIll SRllO SRI9 Note: 2Ch is an alias for 7Ah. The VRA bit in register 2Ah must be set for the alias to work zero is written to VRA, both sample rates are reset to 48k ...
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... The AD1881 has been designed to require a minimum amount of external circuitry. The recommended applications circuits are shown in Figures 9 and 10. Reference designs for the AD1881 are available and may be obtained by contacting your local Analog Devices' sales representative or authorized distributor. Example shell programs for establishing a communications path between the ADl881 and an ADSP-21xx are also available ...
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... ANALOGDEVICES FAX-ON-DEMAND HOTLINE AD1881 D.D3D (D'75).t.. D.D18(D.45)T"~ D.DD6(D.15) D.DD2(D.D5)-J~){D" - Page 31 OUTLINE DIMENSIONS Dimensions shown in inches and (rnrn). 48-Lead Thin Plastic Quad Aatpack (LQFP) (ST-48) D.D63 (1.6D) MAX D.D57 (1.45) ~ D.D53 (1.35) liP SEATING PLANE 1'J':;1; MIN . ~~ -..11. DO-7°* D.DD7(D.18) D.D19 (D.5) D.D11 (D.27) D.DD4(D.D9) BSC D.DD6 (D.17) -22- " ...