T9000

Features:

` Complete interface to basic rate ISDN networks at the S/T-interface and U-interface reference points.
` U-interface (LT or NT operation) conforms to ANSI* T1.601 and ETSI TS 080 standards.
` S/T-interface conforms to ANSI T1.605 standard, ITU-T I.430 recommendation, and ETSI ETS 300 012 standard for the network termination (NT) side of the network.
` Low power consumption.
` D-channel HDLC formatter with address recognition and integrated contention resolution scheme.
` 64-byte D-channel FIFOs.
` GCI+ interface supporting GCI and generic TDM modes for interfacing to a wide variety of POTS circuits.
` General-purpose I/O (GPIO) ports with interrupt capability for interfacing to SLICs, codecs, DTMF decoders, and other peripheral devices.
` Three low-power, general-purpose comparators.
` Two 100 kHz programmable PWM outputs with an automatic sine wave generation mode to support ringing, pulse metering, etc.
` 20 kHz-200 kHz programmable dc/dc converter synchronization output.
` JTAG boundary scan on all digital pins.
` Power-saving mode.
   - In this mode, the unused interfaces of the
       T9000, such as, microcontroller, PWMs, and comparator can remain in powerdown mode, thus resulting in significant reduction in power consumption (see Section 20.2, Power Consumption).
` Packaged in a 100-pin TQFP (thin quad flat pkg).
` 5 V power supply.
` Operating temperature range: 40 °C to +85 °C.
` Integrated 80C32 microcontroller with the following features:
   - Programmable clock rates (MHz): 15.36, 7.68, 3.84, 1.92, 0.96.
   - 4K internal SRAM.
   - 64K internal ROM.
   - Supports external ROM/RAM.
   - Can be disabled via pin strap (sleep mode) for
       use with an external emulator.
   - Programmable watchdog timer.
       External ROM and RAM (64K x 8 maximum each) are accessed through an external data/address bus. Support for   ROM and RAM space above the 64K limit can be accomplished by memory paging using one or more GPIO signals as an external chip select. Power management routines may be implemented through the microcontroller to power down most of the internal submodules, including the microcontroller itself. An autosleep mode is also included, allowing the microcontroller to stop its internal clock and be automatically restarted (microcontroller wake-up) whenever any interrupt is triggered.


Pinout




Specifications

Parameter	Symbol	Min	Max	Unit
dc Supply Voltage Range	VDD	-0.5	6.5	V
Storage Temperature	Tstg	-55	150	°C
Voltage (any pin) with Respect to GND	-	-0.5	6.5	V

Description

The T9000 is an ISDN network termination node device that is highly integrated and provides a lowcost solution to support the following:

· All standard NT1 functions required to attach an S/T interface device to an ISDN network. In addition, the T9000 also supports attachment of two standard analog (POTS) telephones for communications over an ISDN network.

· Intelligent network termination (INT/Smart NT1) functions, with its built-in controller and support for attachment of two analog phones for communications over an ISDN network.

· A variation of the V5.1 signaling protocol called narrowband multiservice delivery system (NMDS) adopted by countries using the V5 signaling protocol (e.g., United Kingdom)

In addition, the T9000 can also be used for pair-gain applications where support for more than one telephone line is required without the installation of an additional pair of wires from the telephone central office to the customer premises.