CS43130 datasheet(84/137 Pages) CIRRUS

84 / 137 page

DS1073F1

CS43130

5.11 Headphone Load Measurement

4 Read Interrupt Status 4 register (0xF0003) to clear sticky bits.

5 Enable HP Load Interrupts

Interrupt Mask 4. 0xF0013

0x20

HPLOAD_NO_DC_INT_MASK

HPLOAD_UNPLUG_INT_MASK

Reserved

HPLOAD_OOR_INT_MASK

HPLOAD_AC_DONE_INT_MASK

HPLOAD_DC_DONE_INT_MASK

HPLOAD_OFF_INT_MASK

HPLOAD_ON_INT_MASK

Enable HPLOAD_NO_DC interrupt

Enable HPLOAD_UNPLUG interrupt

Enable HPLOAD_OOR interrupt

Enable HPLOAD_AC_DONE interrupt

Enable HPLOAD_DC_DONE interrupt

Enable HPLOAD_OFF interrupt

Enable HPLOAD_ON interrupt

6 Enable calibration

0x10010

0x99

0x80024

0xBB

0x1002C

0x01

0x10026

0xCB

0x10027

0x95

0x10028

0x0B

0x10010

0x00

7 Turn on impedance measurement

subsystem

HP Load 1. 0xE0000

0x80

HPLOAD_EN

Reserved

HPLOAD_CHN_SEL

Reserved

HPLOAD_AC_START

HPLOAD_DC_START

Enable impedance measurement subsystem

8 Wait for interrupt. Check if HPLOAD_ON_INT = 1 in Interrupt Status 4 register (0xF0003).

Example 5-20. Sequence for Enabling the Impedance Measurement Subsystem (Cont.)

STEP

TASK

VALUE

DESCRIPTION

CS43130 Datasheet(PDF) 84 Page - Cirrus Logic

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