PRODUCT BRIEF
The INCA-P, PSB 21493, integrates in a single clip, all the functions required for a high feature PBX phone.
The line transceiver of the INCA-P implements the subscriber access functions for a digital PBX terminal to be connected to a two-wire UPN Interface. The chip provides complete Layer-1 and basic Layer-2 functions for digital terminals.
Different interfaces allow connection to a variety of devices including a full-speed USB interface for PC host communications.

FEATUREs
■ Two-wire transceiver with AMI coded 2B+D channels
■ C166 based 16-bit CPU
■ Bootstrap Loader Function
■ On-Chip General Purpose SRAM (4 KBytes)
■ On-Chip Debug System OCDS (Level 1)
■ Both Power-on-Reset and Under Voltage Detection provided
■ Terminal-specific Functions, including Keypad Scanner, LED Matrix Control, and two Pulse Width Modulation units
■ 12 Mbit/s Full-Speed Mode complies with USB Specification V1.1
■ 15 SW-configurable Endpoints, as well as the bi-directional Control Endpoint 0
■ Full-duplex echo cancellation with noise reduction
■ Two transducer correction filters
■ Tone Generator
■ DTMF Receiver
■ Three differential inputs for the handset microphone, speakerphone, and the headset
■ Three differential outputs for a handset ear piece (200 Ω), a headset (200 Ω),=and a loudspeaker (100 mW @ 20 Ω)
■ PCM A-Law/µ-Law (ITU-T G.711) and 8/16-bit linear data
■ PCM Codec is fully compatible with the ITU-T G.712 and ETSI (NET33) specification

APPLICATIONs
■ PBX Feature Phone with full-duplex, hands-free operation, including USB interface