AS3525-A/-B C22O22
Data Sheet, Confidential
Table 146 Second Interrupt Register
Name
Base
Default
0x00
IRQ_ENRD_1
I2C audio master
Second Interrupt Register
Please be aware that writing to this register will enable/disable the corresponding
interrupts, while with reading you get the actual interrupt status and will clear the
register at the same time. It is not possible to read back the interrupt enable/disable
settings. This register is reset at a DVDD-POR.
Offset: 0x26
Bit
Bit Name
JTEMP_high
(level)
Default
Access
Bit Description
7
0
x
W
Supervisor junction over-temperature interrupt setting
0: disable
1: enable
R
Supervisor junction over-temperature interrupt reading
0: chip temperature below threshold
1: chip temperature has reached the threshold
The threshold can be set in the SUPERVISOR register (0x24)
Speaker over-current interrupt setting
0: disable
6
LSP_overcurr
(level)
0
x
0
x
W
1: enable
The interrupt must not be enabled if the speaker block is
disabled
Speaker over-current interrupt reading
0: no over-current detected
1: speaker over-current detected, speaker amplifier was shut
down. The shut-down time can be set in LSP_OUT_R register
(0x04)
Headphone over-current interrupt setting
0: disable
R
5
HPH_overcurr
(level)
W
R
1: enable
The interrupt must not be enabled if the headphone block is
disabled
Headphone over-current interrupt reading
0: no over-current detected
1: headphone over-current detected, headphone amplifier was
shut down. The shut-down time can be set in HPH_OUT_R
register (0x02)
4
3
I2S_status
x
R
0: no LRCK on I2S interface detected
1: LRCK on I2S interface present
I2S input status change interrupt setting
0: disable
I2S_changed
(status change)
0
W
1: enable
x
0
x
R
I2S input status change interrupt reading
0: I2S input status not changed
1: I2S input status changed, check I2S_status
Microphone 2 connect detection interrupt setting
0: disable
2
MIC2_connect
(level)
W
R
1: enable
Microphone 2 connect detection interrupt reading
0: no microphone connected to MIC2 input
1: microphone connected at MIC2 input.
IRQ will be released after enabling the microphone stage.
Detecting a microphone during operation has to be done by
measuring the supply current.
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