LM49352RLX/NOPB National Semiconductor, LM49352RLX/NOPB Datasheet - Page 52

• Manufacturer Part Number: LM49352RLX/NOPB
• Description: IC AMP AUDIO MONO D1.4W 36USMD
• Manufacturer: National Semiconductor
• Series: Boomer®, PowerWise®r
• Type: Class Dr

Specifications of LM49352RLX/NOPB

• Output Type: 1-Channel (Mono) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.4W x 1 @ 8 Ohm; 65mW x 2 @ 32 Ohm
• Features: Depop, Differential Inputs, I²C, I²S, Microphone, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 36-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -
• Other names: LM49352RLX

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Bits
0
1
2
3
HPSENSE_AUX_D
HPSENSE_AUX
HPSENSE_D
HP SENSE
Field
This bit enables the headphone sense circuit. If enabled, the headphone amplifier will automatically
turn on/off based on the logic level of the GPIO pin whenever GPIO is selected as a headphone
sense input. If the presence of a headphone insertion is detected, the headphone amplifier will
automatically turn on. If a headphone removal is detected the headphone amplifier will automatically
turn off.
This bit enables the headphone sense circuit. If enabled, the headphone amplifier will automatically
turn on/off based on the logic level of the GPIO pin whenever GPIO is selected as a headphone
sense input. If the presence of a headphone insertion is detected, the headphone amplifier will
automatically turn on and the Class D loudspeaker amplifier will turn off. If a headphone removal is
detected the headphone amplifier will automatically turn off and the Class D loudspeaker amplifier
will turn on. This bit overrides bit 0 of this register.
This bit enables the headphone sense circuit. If enabled, the headphone amplifier will automatically
turn on/off based on the logic level of the GPIO pin whenever GPIO is selected as a headphone
sense input. If the presence of a headphone insertion is detected, the headphone amplifier will
automatically turn on and the Earpiece / Auxout amplifier will turn off. If a headphone removal is
detected the headphone amplifier will automatically turn off and the Earpiece / Auxout amplifier will
turn on. This bit overrides bit 0 and bit 1 of this register.
This bit enables the headphone sense circuit. If enabled, the headphone amplifier will automatically
turn on/off based on the logic level of the GPIO pin whenever GPIO is selected as a headphone
sense input. If the presence of a headphone insertion is detected, the headphone amplifier will
automatically turn on and the Class D loudspeaker amplifier along with the Earpiece / Auxout
amplifier will turn off. If a headphone removal is detected the headphone amplifier will automatically
turn off and the Class D loudspeaker amplifier along with the Earpiece / Auxout amplifier will turn
on. This bit overrides bit 0, bit 1, and bit 2 of this register.
TABLE 24. HP_SENSE (0x1Bh)
HPSENSE_AUX_D
HPSENSE_AUX
HPSENSE_D
HPSENSE
0
1
0
1
0
1
0
1
52
Description
Headphone Sense Status
Headphone Sense Status
Headphone Sense Status
Headphone Sense Status
Off
On
Off
On
Off
On
Off
On