lm49370rl National Semiconductor Corporation, lm49370rl Datasheet - Page 11

• Manufacturer Part Number: lm49370rl
• Description: Audio Sub-system With An Ultra Low Emi, Spread Spectrum, Class D Loudspeaker Amplifier, A Dual-mode Stereo Headphone Amplifier, And A Dedicated Pcm Interface For Bluetooth Transceivers
• Manufacturer: National Semiconductor Corporation

f
DC
DC
I2C
T
T
SPI
T
T
T
T
T
T
VOLUME CONTROL
VCR
VCR
VCR
VCR
VCR
SS
SS
SS
SS
SS
AUDIO PATH GAIN W/ STEREO (bit 6 of 0x00h) ENABLED (AUX_L & AUX_R signals identical and selected onto mixer)
PCMCLK
I2CSET
I2CHOLD
SPISETENB
SPIHOLD-ENB
SPISETD
SPIHOLDD
SPICL
SPICH
AUX
DAC
CPIN
MIC
SIDE
I2S_CLK
I2S_WS
Symbol
AUX
DAC
CPIN
MIC
SIDE
PCM CLK Frequency
I2S_CLK Duty Cycle
I2S_WS Duty Cycle
I2C Data Setup Time
I2C Data Hold Time
Enable Setup Time
Enable Hold Time
Data Setup Time
Data Hold Time
Clock Low Time
Clock High Time
AUX Volume Control Range
DAC Volume Control Range
CPIN Volume Control Range
MIC Volume Control Range
SIDETONE Volume Control Range
AUX VCR Stepsize
DAC VCR Stepsize
CPIN VCR Stepsize
MIC VCR Stepsize
SIDETONE VCR Stepsize
Loudspeaker Audio Path Gain
Parameter
f
f
f
f
Min
Max
Refer to Pg. 16 for more details
Refer to Pg. 16 for more details
Minimum Gain w/ AUX_BOOST OFF
Maximum Gain w/ AUX_BOOST OFF
Minimum Gain w/ AUX_BOOST ON
Maximum Gain w/ AUX_BOOST ON
Minimum Gain w/ DAC_BOOST OFF
Maximum Gain w/ DAC_BOOST OFF
Minimum Gain w/ DAC_BOOST ON
Maximum Gain w/ DAC_BOOST ON
Minimum Gain
Maximum Gain
Minimum Gain
Maximum Gain
Minimum Gain
Maximum Gain
Minimum Gain from AUX input,
BOOST OFF
Maximum Gain from AUX input,
BOOST OFF
Minimum Gain from CPI input
Maximum Gain from CPI input
S
S
S
S
= 48kHz; 16 bit mode
= 48kHz; 25 bit mode
= 8kHz; 16 bit mode
= 8kHz; 25 bit mode
11
Conditions
(Note 6)
Typical
0.768
0.128
–46.5
–34.5
–46.5
–34.5
–34.5
–34.5
–22.5
–30
1.2
0.2
1.5
1.5
1.5
50
12
12
12
36
12
24
0
0
6
0
2
3
LM49370
(Notes 7,
Limit
100
300
100
100
100
100
500
500
11)
40
60
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% (max)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
% (min)
Units
MHz
MHz
MHz
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
%