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STAC9752 Datasheet(PDF) 20 Page - Integrated Device Technology |
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STAC9752 Datasheet(HTML) 20 Page - Integrated Device Technology |
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20 / 95 page  STAC9752/9753 TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING IDT™ 20 STAC9752/9753 REV 3.3 1206 TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING 3. TYPICAL CONNECTION DIAGRAM Figure 9. Typical Connection Diagram Note: Pin 48: To Enable SPDIF, use an 1 K Ω to10 KΩ external pulldown. To Disable SPDIF, use an 1 KΩ to10 K Ω external pullup. Do NOT leave Pin 48 floating. Note: The CD_GND signal is an AC signal return for the two CD input channels. It is normally biased at about 2.5 V. The name of the pin in the AC’97 specification is CD_GND, and this has confused many designers. It should not have any DC path to GND. Connecting the CD_GND signal directly to ground will change the internal bias of the entire CODEC, and cause serious distortion. If there is no analog CD input, then this pin can be No-Connect. 0.1 µF 1 µF 0.1 µF 0.1 µF 1 µF 0.1 µF 2 Ω* Ferrite Bead 3.3V ± 5% AVdd1 AVdd2 DVdd1 DVdd2 XTL_IN XTL_OUT 9 2 3 27 pF 27 pF 24.576 MHz 1 38 25 PC_BEEP 12 PHONE 13 AUX_L 14 AUX_R 15 VIDEO_L 16 VIDEO_R 17 CD_L 18 CD_GND 19 CD_R 20 MIC1 21 MIC2 22 LINE_IN_L 23 LINE_IN_R 41 CAP2 32 *OPTIONAL 0.1 µF 1 µF* 820 pF 29 30 AFILT1 AFILT2 820 pF AVss1 AVss2 26 42 4 7 DVss1 DVss2 HP_OUT_R *Terminate ground plane as close to codec as possible Analog Ground Digital Ground HP_OUT_L 39 37 MONO_OUT 36 LINE_OUT_R 35 LINE_OUT_L 43 GPIO0 44 GPIO1 40 HP_COMM 48 SPDIF 34 NC 33 NC 31 NC 1 µF 27 VREF VREFOUT EAPD CID1 CID0 28 47 46 45 11 RESET# 10 SYNC 24 SDATA_IN BIT_CLK SDATA_OUT 5 6 8 STAC9753 *OPTIONAL 27 pF 22 Ω EMI Filter TUNE TO LAYOUT HP_COMM should be tied to ground at the headphone pin. CLOCK_IN* *Add resistive divider when using 5V clock. (Near Clk source) 0 Ω OPTIONAL |
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