LM49450SQ/NOPB National Semiconductor, LM49450SQ/NOPB Datasheet - Page 31

• Manufacturer Part Number: LM49450SQ/NOPB
• Description: IC AUDIO SUBSYSTEM 2.5W D 32LLP
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class Dr

Specifications of LM49450SQ/NOPB

• Output Type: 2-Channel (Stereo) with Stereo Headphones
• Max Output Power X Channels @ Load: 2.5W x 2 @ 4 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, DAC, Depop, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 32-LLP
• Amplifier Class: D
• No. Of Channels: 2
• Output Power: 1.2W
• Supply Voltage Range: 2.7V To 5.5V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +85°C
• Amplifier Case Style: LLP
• Rohs Compliant: Yes
• For Use With: LM49450SQEVAL - BOARD EVAL FOR LM49450
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM49450SQ; LM49450SQ; LM49450SQTR

HEADPHONE 3D CONFIGURATION REGISTER (0x05h)
Default value is 0x00h.
LOUDSPEAKER 3D CONFIGURATION REGISTER
(0x06h)
Default value is 0x00h.
B5:B4
B3:B2
B5:B4
B3:B2
Bit
B7
B6
B1
B0
Bit
B7
B6
B1
B0
HP_3DFREQ_1 (B5)
HP_3DFREQ_0 (B4)
HP_3DFREQ_1 (B3)
HP_3DFREQ_0 (B2)
LS_3DFREQ_1 (B5)
LS_3DFREQ_0 (B4)
LS_3DFREQ_1 (B3)
LS_3DFREQ_0 (B2)
HP_3DATTN
LS_3DATTN
RESERVED
RESERVED
HP_3DEN
HP_3DEN
HP_3D
HP_3D
Name
Name
TABLE 15. Loudspeaker 3D Configuration Register
TABLE 14. Headphone 3D Configuration Register
B5
B3
B5
B3
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Value
Value
X
X
0
1
0
1
0
1
0
1
0
1
0
1
B4
B2
B4
B2
31
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
0
UNUSED
No Attenuation
Output signals are attenuated by 6dB
Sets 3D high pass filter -3dB (roll-off) frequency
Sets the 3D mix level, ie the amount of the left channel
signal that appears on the right channel and visa versa.
Narrow 3D effect
Wide 3D effect
Headphone 3D disabled
Headphone 3D enabled
UNUSED
No Attenuation
Output signals are attenuated by 6dB
Sets 3D high pass filter -3dB (roll-off) frequency
Sets the 3D mix level, ie the amount of the left channel
signal that appears on the right channel and visa versa.
Narrow 3D effect
Wide 3D effect
Loudspeaker 3D disabled
Loudspeaker 3D enabled
Description
Description
300Hz
600Hz
900Hz
300Hz
600Hz
900Hz
37.5%
37.5%
25%
50%
75%
25%
50%
75%
0
0
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