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92HD65C Datasheet(PDF) 11 Page - Integrated Device Technology |
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92HD65C Datasheet(HTML) 11 Page - Integrated Device Technology |
11 / 268 page IDT CONFIDENTIAL 11 V 0.91 10/11 ©2011 INTEGRATED DEVICE TECHNOLOGY, INC. 92HD65C 92HD65C SIX CHANNEL HD AUDIO CODEC WITH DUAL CAPLESS HEADPHONE AMPLIFIERS 2. DETAILED DESCRIPTION 2.1. Port Functionality 2.2. Port Characteristics Universal (Bi-directional) jacks are supported on ports A, B, C, E, and F. Ports A, B, and F are designed to drive 32 ohm (nominal) headphones or a 10K (nominal) load. Line Level outputs are intended to drive an external 10K load (nominal) and an on board shunt resistor of 20-47K (nominal). However, applications may support load impedances of 2.8K ohms and above when implementing ports capable of operating as microphone inputs or line outputs. Input ports are 75K (nominal) at the pin. DAC full scale outputs and intended full scale input levels are greater than 1V rms at 5V (+5%/ -10%) to meet WLP requirements. Line output ports and Headphone output ports on the codec may be configured for +3dBV full scale output levels by using a vendor specific verb. Output ports implement anti-pop circuits to prevent pops/clicks associated with turning power on/off or charging and discharging output coupling capacitors (except for cap-less headphone ports). Unused ports should be left unconnected. When updating existing designs to use the codec, ensure that there are no conflicts between the output ports on the codec and existing circuitry. Pins (40-pin) Port Input Output Head phone Mic Bias (Vref pin) Input boost amp 23/24/32/33 A Yes Yes Yes Yes1 1. Ports A and B provide internal microphone bias on the headphone out pins. No external VrefOut pin is needed. Yes 25/26/34/35 B Yes Yes Yes Yes1 Yes 16/17 C Yes Yes Yes Yes -D 12/23 E Yes Yes Yes Yes 14/15 F Yes Yes Yes Yes 39 SPDIF_OUT0 Yes2 2. DMIC1 Yes Yes3 3. Boost amp is only available for DMIC input and is not associated with the pin widget 37 SPDIF_OUT1 Yes2 Yes Yes3 36 SPDIF_IN Yes 2 (CLK=1) DMIC0 Yes Yes Table 1. Port Functionality AFG Power State Input Enable Output Enable Used as output for DAC/Mixer Used as output for analog PC_Beep Used as input for ADC, mixer Port Behavior D0-D2 1 1 Don’t care Don’t care Yes Not allowed. Port is active as Input. 1 1 Don’t care Don’t care No Not allowed. Inactive (Power Down) - Port keeps output coupling caps charged if port uses caps. Table 2. Analog Output Port Behavior |
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