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AD1981HD Fiches technique(PDF) 8 Page - Analog Devices |
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AD1981HD Fiches technique(HTML) 8 Page - Analog Devices |
8 / 16 page AD1981HD Rev. 0 | Page 8 of 16 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 48 47 46 45 44 43 42 41 40 39 38 37 35 PORT-D_L 34 SENSE_B/SRC_A 33 NC 30 MIC_BIAS-F 31 NC 32 MIC_BIAS-D 36 PORT-D_R 29 MIC_BIAS-C 28 MIC_BIAS-B 27 VREF_FILT 25 AVDD 26 AVSS 2 GPIO_2 3 GPIO_3 4 DVSS 7 DVSS 6 BIT_CLK 5 SDATA_OUT 1 DVDD 8 SDATA_IN 9 DVDD 10 SYNC 12 PC BEEP 11 RESET NC = NO CONNECT 13 14 15 16 17 18 19 20 21 22 23 24 PIN 1 AD1981HD TOP VIEW (Not to Scale) Figure 3. Pin Configuration Table 15. Pin Function Descriptions Mnemonic Pin No. I/O Description SDATA_OUT 5 I HD Audio Link Serial Data Output. Codec input stream. BIT_CLK 6 I HD Audio Link Bit Clock Input. 24 MHz. SDATA_IN 8 I/O HD Audio Link Serial Data Input. Codec output stream. SYNC 10 I HD Audio Link Frame Sync. RESET# 11 I HD Audio Link Reset. Master hardware reset. Table 16. Digital Input/Output Pin Function Descriptions Mnemonic Pin No. I/O Description GPIO_2 2 I/O General-Purpose Input/Output. Digital signal used to sense/control external circuits. GPIO_3 3 I/O General-Purpose Input/Output. Digital signal used to sense/control external circuits. GPIO_0/JS_1 43 I/O GPIO_0—General-Purpose Input/Output. Digital signal used to sense/control external circuits. JS_1—Classic (DC) Jack Sense for Headphone Out Pins. Low indicates that nothing is plugged into the jack; high indicates that a peripheral is plugged into the jack. GPIO_1/JS_0 44 I/O GPIO_1—General-Purpose Input/Output. Digital signal used to sense/control external circuits JS_0—Classic (DC) Jack Sense for Line Out Pins. Low indicates that nothing is plugged into the jack; high indicates that a peripheral is plugged into the jack. SENSE_A/SRC_B 13 I/O SENSE_A—Jack Sense A–D Input. For use with isolated switches on audio jacks.1 SENSE_B/SRC_A 34 I/O SENSE_B—Jack Sense E–F Input. For use with isolated switches on audio jacks.1 EAPD 47 O External Amplifier Power-Down Output. S/PDIF_OUT 48 O S/PDIF Output. 1 To reduce SENSE_A/B static current draw, connect a single 2.69 kΩ resistor between Pins 13 and 34. Remove the resistors from Pins 33 and 13 to AVDD. |
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