Datasheet


SLAS412− DECEMBER 2003
www.ti.com
7
FUNCTIONAL BLOCK DIAGRAM
∑−∆
DAC
Σ Σ
Vol
Ctl
0 to −63.5 dB
(0.5 dB Steps)
Digital
Audio
Processing
and
Serial
Interface
∑−∆
DAC
Σ Σ
Vol
Ctl
PLL
Sidetone
−48 to 0 dB
1.5 dB Steps
Headphone Driver
Headphone Driver
DAC CM
Analog Volume
Control −34.5 to
12 dB
2.5 V/2 V
∑−∆
ADC
0 to 59.5 dB
(0.5 dB Steps)
AGC
SPI
Interface
OSC
SAR
ADC
Internal 2.5 V/
1.25 V
Reference
Battery
Monitor
Battery
Monitor
Temperature
Measurement
DRVDD DRVSS AVDD AVSS DVDD DVSS IOVDD
HPR
HPL
VGND
MICBIAS
MICIN
AUX
VBAT1
VBAT2
VREF
MCLK
PWD
/ADWS
DOUT
LRCK
DIN
BCLK
RESET
SCLK
SS
SCLK
MOSI
MISO
DAV