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AD1981AJST データシート(PDF) 7 Page - Analog Devices |
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AD1981AJST データシート(HTML) 7 Page - Analog Devices |
7 / 24 page REV. 0 AD1981A –7– PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic I/O Function DIGITAL I/O 2 XTL_IN I Crystal Input (24.576 MHz) or External Clock Input 3 XTL_OUT O Crystal Output 5 SDATA_OUT I AC-Link Serial Data Output, AD1981A Data Input Stream 6 BIT_CLK O/I AC-Link Bit Clock Output (12.288 MHz) or Bit Clock Input if Secondary Mode Selected 8 SDATA_IN O AC-Link Serial Data Input, AD1981A Data Output Stream 10 SYNC I AC-Link Frame Sync 11 RESET I AC-Link Reset, AD1981A Master H/W Reset 48 SPDIF O S/PDIF Output CHIP SELECTS (These pins can also be used to select an external clock. See Table II.) 45 ID0 I Chip Select Input 0 (Active Low) This pin can also be used as the chain input from a secondary Codec. 46 ID1 I Chip Select Input 1 (Active Low) JACK SENSE AND EAPD 17 JS0 I JACK SENSE 0 Input 16 JS1 I JACK SENSE 1 Input 47 EAPD O External Amp Power-Down Control ANALOG I/O 13 PHONE_IN I PHONE Input. Mono input from telephony subsystem speaker phone or handset. 14 AUX_L I AUXILIARY Input Left Channel 15 AUX_R I AUXILIARY Input Right Channel 18 CD_L I CD Audio Left Channel 19 CD_GND_REF I CD Audio Analog Ground Reference for Differential CD Input 20 CD_ R I CD Audio Right Channel 21 MIC_IN I Microphone Input (Mono) 23 LINE_IN_L I Line In Left Channel 24 LINE_IN_R I Line In Right Channel 35 LINE_OUT_L O Line Out (Front) Left Channel 36 LINE_OUT_R O Line Out (Front) Right Channel 37 MONO_OUT O Monaural Output to Telephony Subsystem Speakerphone 39 HP_OUT_L O Headphone Left Channel Output 41 HP_OUT_R O Headphone Right Channel Output FILTER/REFERENCE (These signals are connected to resistors, capacitors, or specific voltages.) 27 VREF O Voltage Reference Filter 28 VREFOUT O Voltage Reference Output 5 mA Drive (Intended for Mic Bias and Power Amp Bias) 29 AFILT1 O Antialiasing Filter Capacitor—ADC Right Channel 30 AFILT2 O Antialiasing Filter Capacitor—ADC Left Channel 31 AFILT3 O Antialiasing Filter Capacitor—Mixer ADC Right Channel 32 AFILT4 O Antialiasing Filter Capacitor—Mixer ADC Left Channel POWER AND GROUND SIGNALS 1DVDD1 I Digital VDD 3.3 V 4DVSS1 I Digital GND 7DVSS2 I Digital GND 9DVDD2 I Digital VDD 3.3 V 25 AVDD1 I Analog VDD 5.0 V 26 AVSS1 I Analog GND 33 AVSS4 I Analog GND 34 AVDD4 I Analog VDD 5.0 V 38 AVDD2 I Analog VDD 5.0 V 40 AVSS2 I Analog GND 43 AVDD3 I Analog VDD 5.0 V 44 AVSS3 I Analog GND NO CONNECTS 12 NC No Connect 22 NC No Connect 42 NC No Connect |
同様の部品番号 - AD1981AJST |
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同様の説明 - AD1981AJST |
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