STW5093CYL ST-Ericsson Inc, STW5093CYL Datasheet - Page 18

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STW5093CYL

Manufacturer Part Number
STW5093CYL
Description
IC FILTR/CODEC 14BIT AUD 30TSSOP
Manufacturer
ST-Ericsson Inc
Type
Stereo Audior
Datasheet

Specifications of STW5093CYL

Data Interface
PCM Audio Interface
Resolution (bits)
14 b
Number Of Adcs / Dacs
1 / 1
Sigma Delta
No
Voltage - Supply, Analog
2.7 V ~ 3.3 V
Voltage - Supply, Digital
2.7 V ~ 3.3 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
30-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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STw5093
and
where CR8 and CR9 are decimal equivalents of the binary values of the CR8 and CR9 registers respectively.
Thus, any frequency between 7.8 Hz and 1992 Hz may be selected in 7.8 Hz step.
If "halved frequency tone range"is selected, Tone or Ring signal frequency value is defined by the formula:
and
This any frequency between 3.9Hz and 996Hz may be selected in 3.9Hz step.
If "doubled frequency tone range"is selected, Tone or Ring signal frequency value is defined by the formula:
and
Thus any frequency between 15.6Hz and 3984Hz may be selected in 15.6Hz step.
TABLE 12 gives examples for the main frequencies usual for Tone or Ring generation.
CONTROL REGISTER CR10
Remocon Function Enable
Bit REN(7) enables or disables the RemoconFunction. Default value is disabled.
Remocon Mode Selection
Bit RLM(6) is used to select between a transparent pressed button information and a latched pressed button
information at REMOUT. In both cases a debounce circuit (50ms max.) is active.
Remocon Output Inversion
Bit ROI(5) is used to invert or not the information at REMOUT. Default value is not inverted (i.e. pressed button
information is a logic 1 at REMOUT.
Remocon Detection Latch
Bit RDL(4) is set by the internal Remocon Function logic, after the debounce time, when a low level on REMIN
is detected. It can be reset by the mP writing CR10.
Preamplifier Gain Selection
Bit PG(3) provides the selection between 0dB and 20dB gain of the preamplifier. Default value is 20dB.
Microphone Bias Disabling/Enabling
Bit MB (2) enables or disables a switch for microphone biasing.
Default value is disabled.
Tone Frequency Range Selection
Bit DFT(1) and HFT(0) permits the selection among "standard frequency tone range" (i.e. from 7.8Hz to 1992Hz
in 7.8Hz step), "halved frequency tone range" (i.e. from 3.9Hz to 996Hz in 3.9Hz step), and "doubled frequency
18/34
f2 = CR9 / 0.128 Hz
f1 = CR8 / 0.256 Hz
f2 = CR9 / 0.256 Hz
f1 = CR8 / 0.064 Hz
f2 = CR9 / 0.064 Hz

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