DA7219 Datasheet, PDF (10/123 Pages) Dialog Semiconductor – Audio codec with Advanced Accessory Detect

DA7219
Audio codec with Advanced Accessory Detect
Company confidential
4.1 Microphone pins
Pin MIC_P
MIC_P is the positive differential input for the analogue microphone channel. It can be used as a
single-ended input if MIC_N is grounded (see Figure 7).
Pin MIC_N
MIC_N is the negative differential input for the analogue microphone channel. It should be grounded
when using a single-ended analogue microphone configuration.
Pin MICBIAS
MICBIAS is the internally generated microphone supply. This must be decoupled with a 1 µF
capacitor.
4.2 Accessory detect pins
Pin JACKDET
JACKDET is used to signal to the device when the Jack is fully inserted into the 3.5 mm jack (or
alternative) socket
If not required it should be left unconnected.
Pin SLEEVE
Sleeve is tested during the sense stage and then configured as either the headset microphone input
or the headset ground connection
Pin RING2
RING2 is tested during the sense stage and then configured as either the headset microphone input
or the headset ground connection.
Pin SLEEVE_SENSE
SLEEVE sense line to guarantee accuracy over distance, cables and connectors.
Pin RING2_SENSE
RING2 sense line to guarantee accuracy over distance, cables and connectors.
Pin MIC
MIC is the DC input for the analogue accessory detect.
4.3 Interface input pins
Pin MCLK
MCLK is the master clock input pin. It is used as the main system clock either directly or via the PLL.
Pin SCL
SCL is the Control Interface (I2C) clock input and is used in conjunction with SDA to control the
device.
Pin DATIN
DATIN is the data input pin which forms part of the Digital Audio Interface. It is used to present audio
playback data to the device.
Datasheet
Revision 2.1
10 of 123
17-Dec-2015
© 2015 Dialog Semiconductor