73M1966 Product Brief
73M1966
Foreign-Exchange-Office Chip Set
The Teridian 73M1966 is a two chip solution that uses Teridian’s unique data access
arrangement (DAA) function designed exclusively for Foreign-Exchange-Office (FXO) of
Voice-over-IP (VoIP) systems. The device provides most of the circuitry to connect PCM
formatted voice channels to a PSTN via a two wire twisted pair interface.
The 73M1966 interfaces through simple standard interfaces. A PCM Highway interface
provides the data path and device control is provided by an SPI. These interfaces allow the
73M1966 to be easily connected and controlled with other similar devices connected to
the PCM highway and SPI such as POTS Codecs, ISDN Codecs, T1/E1 framers, etc.
The chip set constitutes two separate devices that provide the necessary functionality and
the protection required for worldwide homologation. The 73M1906 is a host side device
and provides the digital data and control interfaces. The 73M1916 is the line side device.
With better than 2.0 in
2
(10.2 cm
2
) board area and a very competitive BOM cost, a complete
universal FXO may be realized with only a few additional standard external components.
Suitable applications for the 73M1966 include VoIP equipment that have a need to
provide connectivity to the PSTN for purposes of guaranteeing emergency service calling,
redundancy for supplementary connectivity for voice, maintenance services.
Based on an innovative and patented technology, which sets new standards in reliability
and cost. A small pulse transformer forms a digital isolation barrier, transferring both
power and data to the PSTN line side components. This results in reliable performance
in presence of EMI and a tolerance to line voltage variations by providing power to the line
side across the barrier thus enhancing overall performance.
Key Applications
PSTN lifeline support for VoIP
Equipment
Small and Medium Enterprise
integrated service routers
Converged media gateways
Analog Telephone Adapters
Voice over IP - PBX
Residential/CPE gateways
Overall the 73M1966 provides a highly efficient solution for performance…
Teridian Semiconductor Corporation is a Silicon DAA technology pioneer and patent holder
with a long history of development and innovation including the capacitive isolation barrier
technology licensed to 3rd parties and has been globally deployed in low speed and high
speed analog modems.
SPI
PCM
MISC
GPIO
LINE
IN/OUT
CTRL
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
