DA7219 datasheet(49/129 Pages) RENESAS

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DA7219

Audio Codec with Advanced Accessory Detect

Datasheet

Revision 3.4

24-Dec-2021

CFR0011-120-00

49 of 128

Table 34: DA7219 Advanced Accessory Detection Feature Summary

Feature

DA7219

support

Configuration

Host Reporting

Jack

Insertion/Removal

Detection

Yes

Enabled when system_active and

accdet_en are both 1.

Jack insertion latency set by

jackdet_debounce

(1 ms <--> 1 s).

Host notifiaction via

e_jack_inserted and

e_jack_removed IRQ events.

Jack Type

Detection

Yes - 3-pole / 4-

pole

Jack type detection runs on

insertion, duration set by

jack_detect_rate. Host configurable

microphone detection impendance

threshold mic_det_thresh (100, 200,

500, 750

Ω). Optional host manual

type override provided.

Host notification via

e_jack_detect_complete IRQ

event. jack_type_sts register

available for host readback ( 3-

pole or 4-pole reported), data

is qualified by

e_jack_detect_complete

Pin Order

Detection

Yes -

CTIA/OMTP

Detection with GND switching runs

on insertion if a 4-pole jack is

detected. Optional host manual pin

order override provided.

Host notification via

e_jack_detect_complete IRQ

event. register available for

host readback (LRGM or

LRMG reported ), data is

qualified by

e_jack_detect_complete.

Button Press

Detection

Yes - press /

release detection

for A,B,C and D

button

impedances with

+/- 1 % accuracy,

as per Google

Chromebook

Headset

Accessory

Electrical

Specification.

Button detection enable and

frequency (2 ms<--> 500 ms) set by

button_config. Host controlled

A_D_BUTTON_THRESH,

D_B_BUTTON_THRESH,

B_C_BUTTON_THRESH, and

C_MIC_BUTTON_THRESH set the

ADC voltage thresholds for button

press impedance measurements

= (RLOAD / (RLOAD + RMICBIAS))

Host notification via

e_button_*_pressed and

e_button_*_released IRQ

events, (where * = a/b/c/d).

button_type_sts 8-bit ADC

measurement result also

available for host readback.

Interrupt Reporting

Yes - single

dedicated h/w

interrupt line.

All events are maskable and are

'Write 1 to clear'.

Interrupt line asserted to host

when any unmasked events are

captured. Interrupt line is de-

asserted when all unmasked

events have been cleared by

host.

MICBIAS Isolation

Yes - both on

insertion and

removal.

Host control when the MICBIAS rail

can be enabled (requires VDD_MIC) with

micbias1_en. AAD will automatically

enable the MICBIAS LDO following

e_jack_detect_complete if

jack_type_sts reports 4-pole.

MICBIAS is auto-disabled, discharged

and isolated on e_jack_removed to

prevent audible artefacts on HPs

during a fast jack removal.

micbias_up_sts available for

host readback to report

MICBIAS rail is up.

HP_L Impedance

Measurement

Yes - supported

by DA7219 using

s/w controlled

sequence

following insertion.

N/A

HP_L / HP_R to

GND when Device

Unpowered

Yes - supported

by DA7219 using

pulldown on HPs.

N/A

DA7219 Datasheet(PDF) 49 Page - Renesas Technology Corp

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