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AD1984B Datasheet(PDF) 10 Page - Analog Devices |
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AD1984B Datasheet(HTML) 10 Page - Analog Devices |
10 / 20 page Rev. 0 | Page 10 of 20 | February 2008 AD1984B Table 4. Pin Function Descriptions Mnemonic Pin No. I/O Description DIGITAL INTERFACE SDATA_OUT BIT_CLK SDATA_IN SYNC RESET 5 6 8 10 11 I I I/O I I Link Serial Data Output. AD1984B input stream. Clocked on both edges of the BIT_CLK. Link Bit Clock. 24.000 MHz serial data clock. Link Serial Data Input. AD1984B output stream clocked only on one edge of BIT_CLK. Link Frame Sync. Link Reset. AD1984B master hardware reset. DIGITAL I/O and EAPD DM_1/2 DM_2 DM_CLK GPIO_2 MIC_BIAS-E/GPIO_1 EAPD/GPIO_0 S/PDIF_OUT-2 S/PDIF_OUT-1 2 4 46 30 31 47 45 48 I I O I/O I/O I/O O O Digital microphone 1 and 2 Inputs (for Biphase Microphones), or Digital Microphone 1 Input (for Single-phase Microphones). Digital microphone 2 Input (for Single-phase Microphones). Clock to drive external digital microphones. General Purpose Input/Output Pins. Digital signals used to control or sense external circuitry. Microphone Bias for Port E/General-Purpose Input/Output. Capable of High-Z, 1.65 V, and 2.86 V. Pin 31 shares functionality between MIC_BIAS_E (default) and GPIO_1. These functions are mutually exclusive and the MIC_BIAS function takes priority over the GPIO function. EAPD/General-Purpose Input/Output pin. Pin 47 shares functionality between GPIO_0 and EAPD. These functions are mutually exclusive and the EAPD function takes priority over the GPIO function. By default, the pin is in a High-Z state. External resistors should be used to ensure the proper circuit state when this pin is in High-Z. Supports S/PDIF Output. Typically used as an audio interface to an external HDMI encoder. Supports S/PDIF Output. JACK SENSE SENSE_A/SRC_B SENSE_B/SRC_A 13 34 I/O I/O Jack Sense A-D Input/Sense B drive. Jack Sense E-F Input/Sense A drive. ANALOG I/O PCBEEP Port-E_L Port-E_R Port-F_L Port-F_R CD_GND Port-B_L Port-B_R Port-C_L Port-C_R MONO_OUT Port-D_L Port-D_R Port-A_L Port-A_R 12 14 15 16 17 19 21 22 23 24 32 35 36 39 41 LI LI, MIC, LO LI, MIC, LO LI, LO LI, LO I LI, MIC LI, MIC LI, MIC LI, MIC LO HP, LO HP, LO HP, LO HP, LO Monaural Input from System for Analog PCBeep. Auxiliary Input/Output Left Channel. Auxiliary Input/Output Right Channel. Auxiliary Input/Output Left Channel. Auxiliary Input/Output Right Channel. CD-Audio-Analog-Ground-Reference. Must be connected to AGND via a 0.1 μF capacitor if not in use as CD_GND. MUST always be ac-coupled. Front Panel Stereo MIC/Line-In. Front Panel Stereo MIC/Line-In. Rear Panel Stereo MIC/Line-In. Rear Panel Stereo MIC/Line-In. Monaural Output to Internal Speaker or Telephony Subsystem Speakerphone. Rear Panel Headphone/Line-Out. Rear Panel Headphone/Line-Out. Front Panel Headphone/Line-Out. Front Panel Headphone/Line-Out. The symbols used in this table are defined as: I = input, O = output, LI = line level input, LO = line level output, HP = output capable of driving headphone load, MIC = input supports microphones with MIC bias and boost amplifier. |
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