STW5093CYL ST-Ericsson Inc, STW5093CYL Datasheet - Page 17

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

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

STW5093
Earpiece amplifier gain selection:
Earpiece Receive gain can be programmed in 2 dB step from 0 dB to -30 dB relative to the maximum with bits
4 to 7.
0 dBmO voltage at the output of the amplifier on pin VFr is 0.9825 Vrms when 0dB gain is selected down to
30.925 Vrms when -30dB gain is selected.
Extra amplifier gain selection:
Extra Receive amplifier gain can be programmed in 2 dB step from 0 dB to -30 dB relative to the maximum with
bits 0 to 3.
0 dBmO voltage on the output of the amplifier on pins V
and V
1.965 Vrms when 0 dB gain is selected down
Lr+
Lr-
to 61.85 mVrms when -30 dB gain is selected.
CONTROL REGISTER CR7:
First byte of a READ or a WRITE instruction to Control Register CR7 is as shown in TABLE 1. Second byte is
as shown in TABLE 9.
Tone/Ring amplifier gain selection
Output level of Ring/Tone generator, before attenuation by programmable attenuator is 1.6 Vpk-pk when f1 gen-
erator is selected alone or summed with the f2 generator and 1.26 Vpk-pk when f2 generator is selected alone.
Selected output level can be attenuated down to -27 dB by programmable attenutator by setting bits 4 to 7.
Frequency mode selection
Bits 'F1' (3) and 'F2' (2) permit selection of f1 and/or f2 frequency generator according to TABLE 9.
When f1 (or f2) is selected, output of the Ring/Tone is a squarewave (or a sinewave) signal at the frequency
selected in the CR8 (or CR9) Register.
When f1 and f2 are selected in summed mode, output of the Ring/Tone generator is a signal where f1 and f2
frequency are summed.
In order to meet DTMF specifications, f2 output level is attenuated by 2dB relative to the f1 output level.
Frequency temporization must be controlled by the microcontroller.
Waveform selection
Bit 'SN' (1) selects waveform of the output of the Ring/Tone generator. Sinewave or squarewave signal can be
selected.
DTMF selection
Bit DE (0) permits connection of Ring/Tone/DTMF generator on the Transmit Data path instead of the Transmit
Amplifier output. Earpiece or extra receive output feed-back may be provided by sidetone circuitry by setting bit
SI or directly by setting bit RTE in Register CR4. Loudspeaker feed-back may be provided directly by setting bit
RTL in Register CR4.
CONTROL REGISTERS CR8 AND CR9
First byte of a READ or a WRITE instruction to Control Register CR8 or CR9 is as shown in TABLE 1. Second
byte is respectively as shown in TABLE 10 and 11.
If "standard frequency tone range" is selected, Tone or Ring signal frequency value is defined by the formula:
f1 = CR8 / 0.128 Hz
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