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ADS8328IBPW Datasheet(PDF) 35 Page - Texas Instruments |
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ADS8328IBPW Datasheet(HTML) 35 Page - Texas Instruments |
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35 / 50 page ![]() Note:olddatashown. CONFIGURE READResult READResult Nth Nthfrom#1 Nthfrom#1 Nthfrom#1 N − 1thfrom#2 Nthfrom#3 N − 1thfrom#2 1110............ 1101b 1101b 1..................16 1 ..................16 1..................16 Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Hi-Z Cascaded ManualTrigger/ReadWhileSampling (UseinternalCCLK,EOCactivelowand activelow) heldlowduringtheNtimes16bitstransfercycle. INT CS CONVST #1, CONVST #3 CONVST #2=1 EOC#1 (activelow) INT #1 (active low) SCLK#1, SCLK#2, SCLK#3 SDO#1, CDI#2 SDO#2, CDI#3 SDO#3 SDI#1, SDI#2, SDI#3 CS/FS#1 CS/FS#2, CS/FS#3 t CONV =18CCLKs t SAMPLE1 =3CCLKsmin t d(CSR-EOS) =20nsmin t d(CSR-EOS) =20nsmin t d(SDO-CDI) t d(SDO-CDI) ADS8327 ADS8328 www.ti.com SLAS415E – APRIL 2006 – REVISED JANUARY 2011 Figure 62. Simplified Cascade Timing (Separate CONVST) The number of SCLKs required for a serial read cycle depends on the combination of different read modes, TAG bit, chain mode, and the way a channel is selected, i.e., auto channel select. This is listed in Table 7. Table 7. Required SCLKs For Different Read Out Mode Combinations CHAIN MODE AUTO CHANNEL NUMBER OF SCLK PER SPI TAG ENABLED CFR.D1 TRAILING BITS ENABLED CFR.D5 SELECT CFR.D11 READ 0 0 0 16 None 0 0 1 ≥17 MSB is TAG bit plus zero(s) 0 1 0 16 None 0 1 1 ≥17 TAG bit plus 7 zeros 1 0 0 16 None 1 0 1 24 TAG bit plus 7 zeros 1 1 0 16 None 1 1 1 24 TAG bit plus 7 zeros © 2006–2011, Texas Instruments Incorporated Submit Documentation Feedback 35 Product Folder Link(s): ADS8327 ADS8328 |
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