Features: • Supports up to 10 independent conferences for up to 32 PCM Voice Channels• ST-BUS compatible 2.048 Mb/s PCM Serial Interface (also supports 1.536 Mb/s and 1.544 Mb/s data rates)• Per channel digital gain control (0/-3/-6 dB)• Parallel microprocessor port for dev...
MT8924: Features: • Supports up to 10 independent conferences for up to 32 PCM Voice Channels• ST-BUS compatible 2.048 Mb/s PCM Serial Interface (also supports 1.536 Mb/s and 1.544 Mb/s data rat...
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Parameter | Symbol | Min | Max | Units | |
1 | Supply Voltage | VDD - VSS | -0.3 | 7 | V |
2 | Voltage on any I/O pin | VI/O | VSS-0.3 | VDD+0.3 | V |
3 | CCurrent on any I/O pin | II/O | ± 10 | mA | |
4 | Storage Temperature | TST | -65 | + 150 | °C |
5 | Power Dissipation (plastic package) | PD | 500 | mW |
The MT8924 is designed to provide conference call capability in digital switching systems. It allows up to 10 independent conferences to be set for up to 32 PCM voice channels.
A/-Law companded data from the PCM input port is converted to linear format, processed by a dedicated arithmetic unit, re-converted to companded format and then sent to the PCM output port.The PCM output signal of MT8924 contains all the information of each channel connected in conference except its own.
Programmable attenuation and noise suppression are provided for channels connected in conference or transparent mode. Additionally, an input of MT8924 for an external tone is featured that can be used as a signal to indicate to connected parties that they are on a conference call.