PSB 21373 H V1.1 Infineon Technologies, PSB 21373 H V1.1 Datasheet - Page 111

• Manufacturer Part Number: PSB 21373 H V1.1
• Description: IC SPEECH AND VOICE MQFP-44
• Manufacturer: Infineon Technologies
• Series: SCOUT™r

Specifications of PSB 21373 H V1.1

• Function: CODEC
• Interface: IOM-2, SCI
• Number Of Circuits: 1
• Voltage - Supply: 5V
• Current - Supply: 97.5mA
• Mounting Type: Surface Mount
• Package / Case: 44-BQFP
• Includes: Activation and Deactivation, Channel Handler, DTMF / Tone / Ringing Generator, HDLC Controller, Speakerphone, Voice Monitoring
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power (watts): -
• Operating Temperature: -
• Other names: PSB21373HV1.1XT; PSB21373HV11XT; SP000007602

PSB 21373
The GR-gain adjustment stage is digitally programmable from – 6 to 0 dB in steps
0.25 dB (–
dB and others are also possible). Respectively two bytes are coded in the
CRAM to set GR to the desired value. After reset, the GR-gain stage is bypassed.
A low-pass filter limits the signal bandwidth in the receive direction according to ITU-T
and ETSI (NET33) recommendations.
A series of low-pass interpolation filters increases the sampling frequency up to the
desired value. The last interpolator feeds the D/A-converter.
Equalizer 1
Equalizer 2
High- / Low- Pass
ITD02288
Figure 59
Architecture of the FX- and FR-Correction Filter
Data Sheet
111
2002-05-13