ACE9040
ACE9040 is Audio Processor Advance Information manufactured by Mitel Networks Corporation.
Supersedes January 1997 edition, DS4289
- 2.5
ACE9040 provides all the speech signal processing and data/SAT tone filtering needed for AMPS or TACS analog cellular telephones.
Transmit voice channel functions prise a microphone amplifier, soft limiter, bandpass filter, pressor, hard limiter, lowpass filter and a gain controlled amplifier to set deviation level. Additional transmit circuits include a DTMF generator, data and SAT filters, deviation setting amplifiers for data/ST and SAT and a modulation biner.
ACE9040’s receive path prises a bandpass filter, expander, volume control and power amplifiers to directly drive an earpiece or handsfree transducer.
Gain settings, mute switches and filter characteristics are programmed via a three wire serial interface.
To implement a handsfree function, both transmit and receive paths have rectifiers for signal amplitude monitoring via an external pin and signal path attenuators controlled via the serial interface.
ACE9040...
