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AT73C213 Datasheet (HTML) - ATMEL Corporation

Part No. AT73C213
Description  Power Management for Mobiles (PM) / Audio Interface for Portable Handsets
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Maker  ATMEL [ATMEL Corporation]
Homepage  http://www.atmel.com
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2
2744A–PMGMT–27-Jan-05
AT73C213
The stereo 32 Ohm headset pair of drivers also includes a mixer of a LINEL and LINER pair of
stereo inputs, as well as a differential monaural auxiliary input (line level).
The DAC output can be connected through a buffer stage to the input of the audio power ampli-
fier, using 2x coupling capacitors The mono buffer stage also includes a mixer of the LINEL and
LINER inputs, as well as a differential monaural auxiliary input (line level) which can be, for
example, the output of a voice Codec output driver in mobile phones.
The audio power amplifier is a dual-mode AB class amplifier with differential output and pro-
grammable volume control. In full power mode, it is capable of driving an 8-ohm loudspeaker at
maximum power of 1W at 5V supply and 440 mW at 3.6V supply. In low power mode, it can
drive the same loudspeaker as an earpiece, making it suitable as a handsfree speaker driver in
wireless handset application. The volume, mute, power down, de-emphasis controls and 16-bit,
18-bit and 20-bit audio formats are digitally programmable via a 4-wire SPI bus and the digital
audio data are provided through a multi-format I2S interface.
2.
Block Diagram
Figure 2-1.
AT73C213 Functional Block Diagram
AT73C213
RSTB
SMODE
VDIG
SDIN
LRFS
BCLK
Digital Filter
LINER
LINEL
HSR
HSL
AVDDHS
LOLC: -6 to +6dB
in 3dB step
32
driver
32
driver
Volume
Control
LMPG: -34.5dB to +12dB
in 1.5dB step and mute
VCM
PGA
Digital Filter
Volume
Control
LLIG: -33 to +12dB in
3dB step
+ 20dB and mute
SPI_DOUT
SPI_CLK
SPI_CSB
SPI
SPI_DIN
DAC
+
+
LLOG: -46.5dB to 0dB
in 1.5dB step and mute
+
+
GNDD
MCLK
INGND
Status
Registers
+
PGA
AUXN
AUXP
MONO
MONOP
MONON
DAC
MONO
RLIG: -33 to +12dB in
3dB step
+ 20dB and mute
RMPG: -34.5dB to +12dB
in 1.5dB step and mute
Volume
Control
Volume
Control
RLOG: -46.5dB to 0dB
in 1.5dB step and mute
ROLC: -6 to +6dB
in 3dB
step
AUXG: -33 to +12dB in
3dB step
+20 dB and mute
APAGAIN -22 to +20dB in
3dB step



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