Specifications


SLAS495A− JUNE 2006 − REVISED OCTOBER 2007
www.ti.com
10
FUNCTIONAL BLOCK DIAGRAM
Σ−∆
Σ−∆
Touch
Panel
Drivers
Battery
Monitor
SAR
ADC
Internal
Reference
−1
−1
Sidetone
DAC
ADC
AGC
Vol Ctl
Vol Ctl
Digital
Audio
Processing
and Serial
Interface
Touch
Screen
Processing
and SPI
Interface
PLL
Headset
detect and
Button
detect
X−
Y+
Y−
X+
VBAT
VREF
MICBIAS_HED
MICBIAS_HND
2.0/2.5/3.3
2.0/2.5
AUX1
MICIN_HED
MICIN_HND
CP_INP
BUZZ_IN/CP_INN
OUT8P
OUT8N
CP_OUTP
OUT32N
SPK1
SPK2
To Detection block
SPKFC
VGND/
1.5V
SCLK
SS
MOSI
MISO
PINTDAV
RESET
MCLK
PWR_DN
SDOUT
WCLK
SDIN
BCLK
0 to 59.5dB
(0.5dB steps)
0 to 59.5dB
(0.5dB steps)
12 to −34.5dB
(0.5dB steps)
0 to −45dB
(3dB steps)
12 to −34.5dB
(0.5dB steps)
MIC_DETECT_IN
To Detection
block
GPIO1
GPIO2
AVDD1 AVDD2 DRVDD BVDD DVDD IOVDD
AVSS2 DRVSS1 DRVSS2 DVSSAVSS1
To ADC and DAC
0 to −63.5dB
(0.5dB steps)
0 to −63.5dB
(0.5dB steps)
AUX2
Temperature
Measurement
OSC
Σ
Σ
Σ
Σ
Σ
Σ−∆
DAC
GPIO
Interface
−1
CP_OUTN