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DA7219

Audio codec with Advanced Accessory Detect

Company confidential

Datasheet

Revision 2.1

17-Dec-2015

21 of 123

Functional description

DA7219 is a high-performance, low-power audio codec with in-built Advanced Accessory Detection

(AAD). The AAD supports the detection of three-pole (headphone or lineout) or four-pole (headset)

jacks, with automatic pin order switching of MIC/GND on CTIA and OMTP headsets.

The DA7219 contains a mono analogue microphone-to-ADC path and a digital audio interface (DAI)

for input and output. The DAC to headphone path has a ground centred, single ended stereo

headphone output.

The digital core has an input filter with a high pass filter, and automatic level control (ALC), while the

output filter has a high pass filter, and a 5-band EQ.

There is also a sidetone path with gain and a tone generator that supports Dual Tone Multi-

Frequency (DTMF).

9.1

Device operating modes

The DA7219 codec has three operating modes:

● DEEP SLEEP – There is no clocking in DEEP SLEEP mode and consequently no functionality

available and no accessory detection is performed. The system will awake when

system_active = 1.

● SLEEP – In SLEEP mode and with micbias OFF, AAD performs jack detection and jack

configuration detection. Any button press is detected, but identification of the button cannot be

performed until micbias is ON. No clocking is performed in SLEEP mode, and playback and

record are not supported.

● ON – AAD performs full-function accessory detection. Playback and record are supported.

All modes, their maximum current consumption, and functionality are listed in Table 19.

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