Description
The MT88E41 Extended Voltage Calling Number Identification Circuit (ECNIC) is a CMOS integrated circuit providing an interface to various calling line information delivery services that utilize 1200 baud BELL 202 or CCITT V.23 FSK voiceband data transmission schemes. The ECNIC receives and demodulates the signal and outputs data into a simple 3-wire serial interface.

FEATUREs
• 1200 baud BELL 202 and CCITT V.23 Frequency Shift Keying (FSK) demodulation
• Compatible with Bellcore GR-30-CORE and SR-TSV-002476
• High input sensitivity: -36dBm minimum FSK Detection Level
• Simple serial 3-wire data interface eliminating the need for a UART
• Power down mode
• Internal gain adjustable amplifier
• Carrier detect status output
• Uses 3.579545 MHz crystal
• 2.7 - 5.5V operation
• Low power CMOS technology

APPLICATIONs
• Calling Number Delivery (CND), Calling Name Delivery (CNAM) and Calling Identity on Call Waiting (CIDCW) features of Bellcore CLASSSM service
• Feature phones
• Phone sets, adjunct boxes
• FAX machines
• Telephone answering machines
• Database query systems
• Battery powered applications