LM4934RL/NOPB National Semiconductor, LM4934RL/NOPB Datasheet - Page 17

• Manufacturer Part Number: LM4934RL/NOPB
• Description: IC AUDIO SUBSYSTEM 1.2W 42USMDXT
• Manufacturer: National Semiconductor
• Series: Boomer®r
• Type: Class ABr

Specifications of LM4934RL/NOPB

• Output Type: 2-Channel (Stereo) with Mono and Stereo Headphones
• Max Output Power X Channels @ Load: 1.2W x 2 @ 8 Ohm; 80mW x 2 @ 32 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Features: 3D, Depop, I²C, I²S, Mute, Shutdown, SPI, Volume Control
• Mounting Type: Surface Mount
• Package / Case: 42-MicroSMDxt
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LM4934RL; LM4934RLTR

System Controls
3D type 1: R
3D type 2: R
R
L
G = 3D gain level (Mix Ratio)
R
L
i
OUT3D
i
OUT3D
= Left Input
= Right Input
Loudspeaker Right Channel
Loudspeaker Left Channel
Headphone Right Channel
Headphone Output Mode
Headphone Left Channel
Mono Speaker Output
= L
= R
i
i
OUT
OUT
through the high-pass filter R
through the high-pass filter R
All Outputs
Lineout
= R
= −R
3D_LEVEL_1
i
- G * L
i
- G * L
0
0
1
1
OUT3D
OUT3D
3D_MODE
, L
, L
OUT
(Continued)
OUT
0
1
3D
= L
TABLE 10. National 3D Enhancement Level Select (03h)
3D
Outputs Toggled Via Register Control
= L
and C
Headphone Output set to Capless
and C
i
- G * R
i
+ G * R
3D
TABLE 11. National 3D Mode Control (04h)
3D
LINEOUT_OUTPUT = 1
MONO_OUTPUT = 1
OUT3D
HP_R_OUTPUT = 1
LS_R_OUTPUT = 1
HP_L_OUTPUT = 1
LS_L_OUTPUT = 1
(CHP = 1/2 AV
OUT3D
TABLE 9. Output Control (01h)
Output On
Output On
Output On
Output On
Output On
Output On
OCL = 1
CD3 = 1
3D_LEVEL_0
DD
)
17
0
1
0
1
OCL = 1, Output Mute
OCL = 1, Output Mute
Headphone Output Set to Cap-coupled
LINEOUT_OUTPUT = 0
MONO_OUTPUT = 0
HP_R_OUTPUT = 0
LS_R_OUTPUT = 0
HP_L_OUTPUT = 0
LS_L_OUTPUT = 0
3D type 1
3D type 2
MODE
All Outputs Off
Output Mute
Output Off
Output Off
Output Off
OCL = 0
CD3 = 0
MIX RATIO
OCL = 0, Output Mute
OCL = 0, Output Mute
25%
40%
55%
70%
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