MSM7502 Description
The MSM7502, developed especially for low-power and multi-function applications in touchtone telephone sets and digital telephone terminals of digital PBXs, is a single +5 V power supply CODEC device. The device consists of the analog speech paths directly connectable to a handset, the calling circuit directly connectable to a piezosounder, the push-button key scanning interface between push buttons and control...
MSM7502 Key Features
- Single +5 V Power Supply
- Low Power Dissipation Power ON Mode : 30 mW Typ. 53 mW Max. Power Saving Mode : 2 mW Typ. 5 mW Max
- In pliance with ITU-T’s panding law
- Built-in PLL
- Built-in Reference Voltage Supply
- Calling Tone Interval : Controlled by processor
- Calling Tone bination : Controlled by processor, 6 modes
- Calling Tone Volume : Controlled by processor, 4 modes
- Ringing Tone Interval : Controlled by processor
- Ringing Tone Frequency : Controlled by processor, 6 modes