u4091bm-r ATMEL Corporation, u4091bm-r Datasheet
u4091bm-r
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u4091bm-r Summary of contents
Page 1
... DC/DC converter, sidetone equivalent and ear-protection rectifiers. The circuit is line-powered and contains all components nec- essary for signal amplification and adaptation to the line. The U4091BM-R can also be supplied via an external power supply. An integrated voice switch with loudspeaker amplifier enables hands-free or open-listening operation ...
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... Figure 1-1. Block Diagram Speech U4091BM-R 2 Voice circuit switch Serial bus DTMF Audio amplifier Clock Data MCU Reset Tone ringer 4872A–CORD–08/05 ...
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... Figure 1-2. Detailed Block Diagram 4872A–CORD–08/05 U4091BM-R 3 ...
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... Pin Configuration Figure 2-1. Pinning SSO44 U4091BM RECIN 44 2 TXACL 43 3 MIC3 MIC2 5 MIC1 RECO2 7 38 RECO1 IND SENSE 10 U4091BM GND SAO2 31 SAO1 14 VMPS 30 15 VMP 16 29 VMIC 28 17 TSACL 27 18 VRING 26 19 IMPA ...
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... Time constant for mode switching of voice switch 34 TLDR Time constant of receive-level detector 35 INLDR Input of receive-level detector 36 INLDT Input of transmit-level detector 37 TLDT Time constant of transmit-level detector 38 IMPSW Switch for additional line impedance 39 MICO Microphone preamplifier output Note: 1. The protection device at pin RECIN is disconnected. 4872A–CORD–08/05 (1) U4091BM-R 5 ...
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... L = ------------------------------------------------------------------------------------------ - The U4091BM-R contains two identical series regulators which provide a supply voltage VMP of 3.3V suitable for a microprocessor. In speech mode, both regulators are active because VMPS and VB are charged simultaneously by the DC line interface. The output current is 6 mA. The capacitor at VMPS is used to provide the microcomputer with sufficient power during long line interruptions ...
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... RING 6. Ringing Frequency Detector (RFD) The U4091BM-R provides an output signal for the microcontroller. This output signal is always double the value of the input signal (ringing frequency generated by a current comparator with hysteresis. The levels for the on-threshold are programmable in 16 steps, the off-level is fixed ...
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... The U4091BM-R drives the data line. The fast read cycle is indicated by a strobe signal. With the following two clocks the U4091BM-R reads out the status bits RFDO and LIDET which indicate that a ringing signal or a line signal is ...
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... DTMF Frequencies DTMFF[2:3] Decimal in DTMF Mode U4091BM-R Table 10-1. Status DTMF generator OFF Confidence tone melody on (sine) Ringer melody (pulse) Ringer melody (square signal) DTMF (mid level) DTMF (low level) DTMF (high level) – Frequency Error (%) 697 – ...
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... U4091BM-R 10 DTMFF4 in DTMF Mode Pre-emphasis Selection 0 1 DTMF and Melody Frequencies DTMFF f Tone/ [0:4] (Hz) Name 4 00000 440 00001 466 00010 493 00011 523 00100 554 ...
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... Write cycle Data from P Normal read cycle Strobe from µP Fast read cycle CLOCK DATA D7=IZC Data from U4091BM Strobe from µ R/W=0 Strobe from Data from U4091BM D6=IVE U4091BM ...
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... R2B3 R2 Matrix R2B4 R2B5 R2B6 R2B7 R3B0 R3B1 R3B2 R3B3 R3 Matrix R3B4 R3B5 R3B6 R3B7 U4091BM-R 12 Name Description ENRING Enable ringer ERX Enable receive part ETX Enable transmit part ENVM Enable VM generator ENMIC Enable microphone ENSTBAL Enable sidetone MUTE Muting earpiece amplifier ...
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... Gain earpiece amplifier EA2 Gain earpiece amplifier EA3 Gain earpiece amplifier EA4 Gain earpiece amplifier MSB IMPH Line impedance selection ( LOMAKE Short circuit during pulse dialing AIMP Switch for additional external line impedance U4091BM-R Status ...
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... R12B5 R12B6 R12B7 R13B0 R13B1 R13B2 CLK R13B3 R13 RTH R13B4 TM R13B5 R13B6 R13B7 U4091BM-R 14 Name Description AFS0 AFS gain adjustment LSB AFS1 AFS gain adjustment AFS2 AFS gain adjustment AFS3 AFS gain adjustment AFS4 AFS gain adjustment AFS5 AFS gain adjustment MSB ...
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... Power-on Reset To avoid undefined states of the system when it is powered on, an internal reset clears the inter- nal registers. The system (U4091BM-R + microcontroller) is woken up by any of the following conditions: • VMP > 2.75V and VB > 2.95V • and line voltage (VL) • or ringer (VRING) • ...
Page 16
... Acoustic Feedback Suppression Acoustical feedback from the loudspeaker to the hands-free microphone may cause instability of the system. The U4091BM-R has a very efficient feedback-suppression circuit which offers a 4-point or (alternatively) a 2-point signal-sensing topology (see Two attenuators (TXA and SAI) reduce the critical loop gain via the serial bus either in the trans- mit or in the receive path ...
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... Figure 12-3. Power-on Reset (Ringing) Figure 12-4. Power-on Reset (Low Voltage Reset) 4872A–CORD–08/05 Line LID IVDD OSCOUT t on VMP Reset 4 start-up oscillator on VRING VB IVDD VMP OSCOUT t on Reset Line LID VMP LVI Reset OSCOUT U4091BM LVI LVR 17 ...
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... The output of the transmit background-noise monitor (BNMT) – designated I3 • The output of the receive background-noise monitor (BNMR) – designated I4 • The output of the dial-tone detector The differential output (AFST, AFSR) of the block MODECON controls AFSCON. The effect of I1-I4 in U4091BM-R 18 Figure 12-6 on page Table 12-1 on page 19. ...
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... approximately equal levels. The attenuators are quickly switched (30 ms) to the opposite mode until one speech level dominates the other. are then slowly switched (1.5s) to idle mode. U4091BM-R Output I3 I4 Mode S X Transmit Y Y Change mode ...
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... To switch to reverse mode, the current sources ITX, IRX are turned off, and the current source IFI is switched on, discharging the capacitor to VM. • To switch to idle mode, the current sources ITX, IRX, IFI are turned off, and the current source ISI charges the capacitor to VM. U4091BM-R 20 level detectors, and level detectors, and speaker’ ...
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... Figure 12-7. Generation of Control Voltage (CT) for Mode Switching 4872A–CORD–08/05 IN OUT + - DTD TLDR + + (TLDT µ µ U4091BM-R to mode control BNMR (BNMT) 1 µ AFS to control attenuators 4 Control circuit I 1-4 Dial tone det. 21 ...
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... Figure 12-8. Block Diagram Hands-free Mode U4091BM-R 2-point Signal Sensing Figure 12-9. Block Diagram Hands-free Mode U4091BM-R 4-point Signal Sensing MICRO U4091BM-R 22 TXA MICRO AFS control SA SAI TXA LOGT BNMT Mode control CLOGR AFS control SA SAI LOG Line LOG CLOGT BNMR LOGR CT CCT ...
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... Figure 13-1. Timing of ADC Figure 13-2. ADC Input Selection 4872A–CORD–08/05 SOC 50 s EOC mV/( ADIN 0 0.4 x VMP S 0.4 x VMP 8 x (TLDR - REF (TLDT - REF) 0 AO1 0.4 x OFF1 0.4 x OFF2 0.4 x OFF3 U4091BM BIT5 BIT4 ADC BIT3 BIT2 BIT1 LS B EOC 23 ...
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... Note measured digital word (0 D 127 programmable gain 0 peak value of the measured signal p U4091BM-R 24 Symbol Value OFF - 127 mA ADIN extern 128 (maximum 2.5V (2.5V / 0.4) VMPS V4 = (2.5V / 0.4) VMP V5 = (2.5V / 0.4) TLDR – Ref) p ...
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... If a switch is open, the path has a damping of more than 60 dB. Figure 14-1. Switch Matrix Diagram 4872A–CORD–08/05 AGCO AMPB LRX DTMF MIC Offset cancel AGC Low pass LTX AGCI AMREC EPO RXLS STO U4091BM-R Offset cancel I1 AGATX0 AGATX1 2.9 dB AGATX2 TXO - ...
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... Table 14-1. Register U4091BM-R 26 Bits and Corresponding Switches No. Name Description R2B0 I1O1 Switch on MIC/LTX R2B1 I1O2 Switch on MIC/RXLS R2B2 I1O3 Switch on MIC/EPO R2B3 I1O4 Switch on MIC/AMREC R2B4 I1O5 Switch on MIC/AGCI R2B5 I2O1 Switch on DTMF/LTX R2B6 I2O2 Switch on DTMF/RXLS R2B7 I2O3 Switch on DTMF/EPO ...
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... In real life, the line impedance ZL varies strongly for different users. To obtain good suppression with one application for all different line impedances, the STB function is programmable. 4872A–CORD–08/05 LTX DIFF1 + - AMP1 STO_DIFF AMP2 Sidetone balancing U4091BM-R LINE MOD RECIN STO -10 dB STOAMP STO 8.2 k STRC CTO STC f ...
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... SL (sidetone slope; the pole frequency of the high-pass) The SL has 3 steps. SL( lower frequency of the high-pass. SL( higher fre- quency of the high-pass. SL can be used to influence the suppression at high frequencies. Figure 15-2. Audio Frequency Signal Management U4091BM -10 dB and 7 dB (NWT ...
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... MICHF = 1 MICHF = mA 700 rms I 19 mA, d < 5 MIC CTXA = 1 µF, DBM5 = 0 DBM5 = mV, MICG[0: MIC U4091BM-R Value 140 12 15 125 –25 to +75 –55 to +150 0.9 Value 70 = 25° 100 , amb ear Symbol Min. Typ. 1.6 4 ...
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... Receiving noise psophometrically weighted Sidetone suppression Output resistance Gain at low operating current (receive only) Note: 1. This is a period of time the bus requires from the end of a data transmission and before a new transmission can be started U4091BM 1 Test Conditions I 14 mA, MICG[0: AGATX[0: CTXA = 1 µ ...
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... Load resistance mV AMPB > –10°C to +60°C amb U4091BM-R = 25° 100 , amb ear Symbol Min. Typ. dR 0.8 1 0.8 1 –10 Z 595 625 impl Z 980 1030 imph –5.1 –3.6 – ...
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... 5V, ENAM = I4O4 = 1, V Input impedance AMPB Gain AMPB to AMREC Maximum input level AMPB Maximum output level AMREC Note: 1. This is a period of time the bus requires from the end of a data transmission and before a new transmission can be started U4091BM 1 Test Conditions mA, V ...
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... MP IMPSW = 0 IMPSW = 1 IMPSW = mA 300 mV, L GEN mA µA L INLDT µA INLDR µA L INLDT µA INLDR U4091BM-R = 25° 100 , amb ear Symbol Min. Typ. V AMREC 60 VMP 2.65 2. 3.2 on VLVI 2.5 2.6 VLVR 2.35 2.45 100 150 0.6 0.9 ...
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... Stop condition (1) Time space Hold Time Start condition DATA Note: 1. This is a period of time the bus requires from the end of a data transmission and before a new transmission can be started U4091BM 1 Test Conditions = –10° 60° mA 680 k ...
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... Test Circuits Figure 19-1. Basic Test Circuit 4872A–CORD–08/05 U4091BM-R 35 ...
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... Figure 19-2. Test Circuit for Ringing U4091BM-R 36 4872A–CORD–08/05 ...
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... Package Information Package SSO44 Dimensions in mm 0.3 0 4872A–CORD–08/ hDAT H sSTA Stop Start Package SSO44 SSO44 Die 18.05 17.80 16.8 U4091BM-R t hSTA t t sSTOP hDAT Remarks Tube Taped and reeled Die on foil 9.15 8.65 7.50 7.30 2.35 0.25 0.10 10.50 10.20 23 technical drawings according to DIN specifications 22 P 0.25 37 ...
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... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © Atmel Corporation 2005. All rights reserved. Atmel marks or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. Atmel Operations Memory ...