ACE9040 datasheet(3/33 Pages) MITEL

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ACE9040

Pin No.

Name

Description

FP2 package FP1 package

DD supply to substrate, pin should be at highest d.c. voltage

DEC

Mid-supply reference decoupling connection, 3.3

µF to GND

Output from TX or RX handsfree rectifier, switched by bit “HFS”

Line input

RREF

Reference bias current set for all op-amps by resistor to GND

BIAS

Buffered mid-supply reference output

Analogue V

DD input

DATI

Transmit data input

TSI

SAT path input for locally generated tone

RSI

SAT path receiver input for received tone

RXI

Speech path receiver input

RBPO

Audio output from EXPGAIN block

EAMPI

Output from EARSENSE amp

HFGIN

Input to RX volume control and handsfree attenuator

EOUT

Expander speech output

ERCIN

Expander time constant input, 180 k

Ω to ERCOUT, 100 nF to GND

ERCOUT

Expander time constant output, 180 k

Ω to ERCIN

EIN

Expander speech input, 33 nF to RBPO

EAMPO

Output from EAMP op-amp

EAMPFB

Inverting input to EAMP op-amp

EPOP

Earpiece driver positive output

Earpiece V

SS (GND) supply connection

23/24

No connection

EPON

Earpiece driver negative output

Earpiece V

DD supply input

STBY

Standby output: low indicates standby state, high is V

DD output @ 10 mA

Line output

VMIDRX

RX path mid-supply reference voltage, 82 nF to GND

Digital V

LEN

Serial interface latch signal input, rising edge triggered

Digital V

SS (GND) connection

31/32

No connection

LVN

Low supply V

DD voltage indicator comparator output, reset active low output

SCLK

Serial interface system clock input

Serial interface data input

RSO

Received (regenerated) SAT output

TSO

Transmit SAT output, regenerated or transponded

DATO

Transmit data filter output.

Analogue V

SS (GND)

MOD

Modulation output: sum of Speech, Data and SAT

SUMO

Modulation summing amplifier output

SUMI

Modulation summing amplifier input

TLPO

Transmit audio lowpass filter output

BGAP

Bandgap voltage output, 10 nF to GND

V485

Hard limiter gain selection for 3.75 V or 4.85 V nominal supplies

No connection

DTMF

DTMF tone output

AMPO

Auxillary op-amp output

No connection

AMPI

Auxillary op-amp inverting input (non-inverting internally connected to VMIDTX)

PREIN

Transmit pre-emphasis filter input

TBPO

Transmit bandpass filter output

CIN

Compressor audio input, 10 nF from TBPO

CRCIN

Compressor time constant input, 100 nF to GND, 180 k

Ω to CRCOUT

VMIDTX

TX path reference voltage, 82 nF to GND

CRCOUT

Compressor time constant output, 180 k

Ω to CRCIN

No connection

COUT

Compressor audio output, 33 nF to PREIN

TXC

Transmit handsfree audio level sensing rectifier smoothing filter, 68 nF to GND

RXC

Received handsfree audio level sensing rectifier smoothing filter, 68 nF to GND

IPS

Transmit audio gain INPSENSE adjustment block input

SLO

Soft limiter output

Microphone input

MICBIAS

Bias for electret or active microphone

PIN DESCRIPTIONS

Note: FP1 = 10 x 10mm package, FP2 = 7 x 7 mm package

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