DA7219 datasheet(11/123 Pages) DIALOG

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DA7219

Audio codec with Advanced Accessory Detect

Company confidential

Datasheet

Revision 2.1

17-Dec-2015

11 of 123

4.4

Interface output pins

Pin nIRQ

nIRQ is the open drain active-low interrupt output to alert the host to either an accessory or a

level-detect event.

Pin DATOUT

DATOUT is the data output pin which forms part of the Digital Audio Interface. It is used to present

audio record data to the host.

4.5

Interface bidirectional pins

Pin SDA

SDA is the Control Interface (I2C) data input/output and is used in conjunction with SCL to control the

device.

Pin BCLK

BCLK is the bit clock input/output pin which forms part of the Digital Audio Interface (DAI). It is used

to clock audio data bits into or out from the device or both.

Pin WCLK

WCLK is the word clock input/output pin which forms part of the DAI. It is used to indicate whether

the data bits belong to the left or right audio channel.

4.6

Headphone output pins

Pin HP_L

3.6.2

HP_L is the left-channel headphone output. It is ground-centred so the headphone speaker

can be connected directly between HP_L and ground.

Pin HP_R

HP_R is the right-channel single ended headphone output. It is ground-centred so the headphone

speaker can be connected directly between HP_R and ground.

4.7

Charge pump pins

Pin HPCSP

HPCSP is the positive output from the headphone charge pump. It should be connected to GND_CP

via a reservoir capacitor.

Pin HPCSN

HPCSN is the negative output from the headphone charge pump. It must be connected to GND_CP

via a reservoir capacitor.

Pin HPCFP

HPCFP is one of the flying capacitor connections required by the headphone charge pump. It must

be connected to HPCFN via a capacitor.

Pin HPCFN

HPCFN is one of the flying capacitor connections required by the headphone charge pump. It must

be connected to HPCFP via a capacitor.

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