UDA1343TT NXP Semiconductors, UDA1343TT Datasheet - Page 9

• Manufacturer Part Number: UDA1343TT
• Manufacturer: NXP Semiconductors

Specifications of UDA1343TT

• Single Supply Voltage (typ): 3V
• Single Supply Voltage (min): 2.4V
• Single Supply Voltage (max): 3.6V
• Package Type: TSSOP
• Lead Free Status / RoHS Status: Not Compliant

Philips Semiconductors
Double speed
SInce the device supports a sampling range of
8 to 110 kHz, the device can support double speed (e.g.
for 44.1 kHz and 48 kHz) by just doubling the system
speed. In double speed all features are available.
Digital mixer
The UDA1343TT has a digital mixer which can mix the
ADC signal to the playback signal. A functional block
diagram of the mixer mode is given in Fig.4.
When the device is in mixer mode, care is taken to avoid
clipping. This is done by reducing both signals by 6 dB
before mixing. After mixing there is master volume and
mute, after which the signal is reamplified digitally by 6 dB.
2001 Jul 25
handbook, full pagewidth
Economy audio CODEC with features
and decimator
from ADC
ADC_OUT
select (L3)
DC FILTER
DIGITAL
ADC volume
Fig.4 Mixing feature in the UDA1343TT.
VOLUME
MUTE
I
2
output
S-bus
mute
6 dB
9
VOLUME
The codec can be set to mixer mode via the L3 interface
by setting the MIX bit HIGH.
In the mixer mode there are 3 volume and mute controls
available; one for the ADC channel, one for the playback
channel and one for the master (equal sum) signal.
All three volume ranges can be controlled in 0.25 dB
steps.
In the mixer mode, the ADC volume control is used for
mixing purposes. The decimator output signal can be
output from the chip before the ADC volume control or
after the ADC volume control. This can be set via the L3
interface using the ADC output select bit.
I
MUTE
2
input
S-bus
6 dB
master volume
I
2
VOLUME
S-bus volume
MUTE
UDA1343TT
mute
mute
6 dB
MGL888
to interpolator
and DAC
UDA1343TT
Product specification