CS35L32 Datasheet, PDF (41/51 Pages) Cirrus Logic – Boosted Class D Amplifier with Speaker-Protection Monitoring and Flash LED Drivers

CS35L32
7.18 Interrupt Mask 3
7.18 Interrupt Mask 3
Address 0x14
R/W
7
6
5
4
3
2
1
0
M_UVLO M_LED2_OPEN M_LED2_SHORT M_LED1_OPEN M_LED1_SHORT M_LOWBAT M_BOOST_CURLIM M_BOOST_OVERROR
Default
1
1
1
1
1
1
1
1
Interrupt mask register bits serve as a mask for the interrupt sources in the interrupt status registers. Interrupts are described in Section 4.2.
Registers at addresses 0x14–0x17 must not be part of a control-port autoincremented read and must be read individually. See Section 4.14.1.
Bits
Name
7
M_UVLO
UVLO mask
0 Unmasked
1 (Default) Masked
6
M_LED2_OPEN LED 2/1 open and shorted masks
5
M_LED2_SHORT
0 Unmasked
1 (Default) Masked
4
M_LED1_OPEN
3
M_LED1_SHORT
2
M_LOWBAT
Low battery mask
0 Unmasked
1 (Default) Masked
1 M_BOOST_CURLIM Boost converter masks
0 M_BOOST_OVERROR
0 Unmasked
1 (Default) Masked
Description
7.19 Interrupt Status 1 (Audio)
Address 0x15
R/O
7
6
5
4
3
2
1
0
—
ADSPCLK_ERR MCLK_ERR AMP_SHORT
OTW
OTE
Default
x
x
x
x
x
x
x
x
Interrupt mask register bits serve as a mask for the interrupt sources in the interrupt status registers. Interrupts are described in Section 4.2.
Registers at addresses 0x14–0x17 must not be part of a control-port autoincremented read and must be read individually. See Section 4.14.1.
Bits Name
Description
7:5
—
Reserved
4 ADSPCLK_ ADSP clock error. Indicates that the ADSP has lost synchronization. See Section 4.11.2 and Section 7.7 for details.
ERR
0 (Default) MCLK_INT-to-LRCK ratio is valid. Valid if f_LRCK = f_MCLK(INT)/RATIO
1 MCLK_INT-to-LRCK ratio is invalid. Set as the ADSP resynchronizes on initial power up and application of clocks.
3 MCLK_ Master clock error. Indicates the MCLK watchdog status.
ERR
0 (Default) MCLK is above ~1.25 MHz.
1 MCLK is below ~1.25 MHz, so the device should be reset (RESET = HIGH LOW), released from reset (RESET =
LOW HIGH) when a valid MCLK is reapplied, and restarted. If this condition exists, the Class D amplifier
immediately stops switching and the outputs are internally clamped to ground. See Section 4.13.3.
2 AMP_ Amplifier short. Indicates that either of the amplifier outputs (OUT±) is driving a short circuit.
SHORT 0 (Default) Not shorted
1 Shorted. The device enters Speaker-Safe Mode (see Section 4.3.4). Normal behavior may resume when the short
condition ceases and AMP_SHORT_RLS is sequenced, as described in Section 7.15.
Note: The circuit feeding this bit requires the amplifier to be fully powered and not in shut-down mode; if it is powered down
(PDN_AMP = 1) or in Speaker-Safe Mode, the detector indicates no short condition, even if speaker outputs are shorted.
1
OTW Overtemperature warning. Indicates that device junction temperature exceeded the set limit, as described in Table 3-3.
0 (Default) Below set overtemperature warning threshold
1 Above set overtemperature warning threshold
0
OTE Overtemperature error. Indicates whether the device junction temperature exceeded the damage limit.
0 (Default) Below damage limit
1 Above damage limit. The device enters Speaker-Safe Mode (see Section 4.3.4). Normal behavior may resume when
the OTE event ends and OTE_RLS is sequenced, as described in Section 7.15.
DS963F5
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