MT88E43AE ZARLINK [Zarlink Semiconductor Inc], MT88E43AE Datasheet
MT88E43AE
Related parts for MT88E43AE
MT88E43AE Summary of contents
Page 1
... Bias VRef Generator CAP PWDN To internal cct. Oscillator OSCin OSCout TRIGin Extended Voltage Calling Number MT88E43AE MT88E43AS • Feature phones, including Analog Display Services Interface (ADSI) phones • Phone set adjunct boxes • FAX and answering machines • Database query and Computer Telephony ...
Page 2
MT88E43 Pin Description Pin # Name 1 IN+ Non-inverting Input of the internal opamp. 2 IN- Inverting Input of the internal opamp Gain Select (Output) of internal opamp. The opamp’s gain should be set according to the nominal ...
Page 3
... An incoming CDS call is indicated by a polarity reversal on the A and B wires (see Figure 3), followed by an Idle State Tone Alert Signal. Caller ID FSK information is then transmitted in CCITT V.23 format. MT88E43 can detect the line reversal, tone alert signal, and demodulate the incoming CCITT V.23 FSK signals. The U.K.’ ...
Page 4
MT88E43 Bell-202 or CCITT V.23 FSK data following the ring burst. The U.K.’s CCA specifies that data can be transmitted in either format. Bellcore specification GR-30-CORE is the generic requirement for transmitting voiceband data to Customer Premises Equipment (CPE). Another ...
Page 5
... Previously the RC time constant would cause only one interrupt. Dual Tone Alert Signal Detection The BT on hook (idle state) caller ID scheme uses a dual tone alert signal whose characteristics are shown in Table 1. Bellcore specifies a similar dual tone alert signal called CPE Alerting Signal (CAS) for use in off-hook data transmission (see Table 1) ...
Page 6
MT88E43 Dual Tone Detection Guard Time When the dual tone alert signal is detected by the MT88E43, ESt goes high. When the alerting signal ceases to be detected, ESt goes low. The ESt pin signals raw detection of CAS/Alerting Tones. ...
Page 7
Data Sheet Voltage Gain ( Figure 6 - Single-Ended Input Configuration Differential Input Amplifier ...
Page 8
MT88E43 transfer is initiated by the MT88E43; in mode 1, data transfer is initiated by the external microcontroller. Mode 0 This mode is selected when the MODE pin is low the MT8841 compatible mode where data transfer is ...
Page 9
Data Sheet It is possible to clear StD and its interrupt by asserting PWDN immediately after system power up. When PWDN is high, StD is low. PWDN will also force both ESt and the comparator output low, Q2 will turn ...
Page 10
MT88E43 TIP / A R 22nF 1 5% TISP4180, TISP5180, TPA150A12 or TPB150B12 RING / B R 22nF 1 5% 499K, 5% 100nF 1N914 5% 1N914 499K, 5% 100nF 5% NOTE: Resistors must have 1% tolerance and capacitors have 20% ...
Page 11
Data Sheet 1 0.95 0.9 0.85 0.8 0.75 0.7 0.65 0.6 2 2.5 Figure 10: Gain Ratio as a function of Nominal Vdd Note: In the application circuits shown in Figures 9 and 11, the Gain Ratio of MT88E43 opamp ...
Page 12
MT88E43 22nF 5% TIP / 22nF 5% RING / 100nF 10% 330nF 12K1 Vdd Motorola 5% 10% 4N25 464K 5% NOTE: Resistors must have 1% tolerance, capacitors have 20% tolerance unless specified otherwise. : ...
Page 13
Data Sheet Absolute Maximum Ratings Parameter 1 Supply voltage with respect Voltage on any pin other than supplies 3 Current at any pin other than supplies 4 Storage Temperature * Exceeding these values may cause permanent damage. ...
Page 14
MT88E43 DC Electrical Characteristics Characteristics 7 TRIGout Output High Sourcing , DCLK, Current DATA, DR, CD, StD, ESt, St/GT 8 Output Low Sinking TRIGout , DCLK, Current DATA, DR, CD, StD, ESt, St/GT TRIGRC , INT 9 Input Current IN+, ...
Page 15
Data Sheet AC Electrical Characteristics Characteristic 1 Low tone frequency 2 High tone frequency 3 Frequency deviation accept 4 Frequency deviation reject 5 Accept signal level per tone 6 Reject signal level per tone 7 Positive and negative twist accept ...
Page 16
MT88E43 † Electrical Characteristics - Gain Setting Amplifier Characteristics 1 Input Leakage Current 2 Input Resistance 3 Input Offset Voltage 4 Power Supply Rejection Ratio 5 Common Mode Rejection 6 DC Open Loop Voltage Gain 7 Unity Gain Bandwidth 8 ...
Page 17
Data Sheet AC Electrical Characteristics Characteristics 1 Power-up time PWDN OSC1 2 Power-down time 3 Input FSK to CD low delay 4 Input FSK to CD high delay CD 5 Hysteresis † AC Electrical Characteristics are over recommended operating conditions ...
Page 18
MT88E43 DATA DCLK Figure 12 - DATA and DCLK Mode 0 Output Timing DR start stop TIP/RING (A/ WIRES t IDD start ...
Page 19
Data Sheet DCLK word N Demodulated internal bit stop 7 start stream DR ëëëëëë¿ t DDS t DDH DCLK DATA word N-1 word N ¿ DCLK clears DR ¡ DCLK does not clear DR, so ...
Page 20
MT88E43 Alerting Signal Line Reversal A/B Wires A B TRIGout Note 1 PWDN t DP ESt t GP St/GT t REC StD TE DC load µ <120 A 20 5ms TE AC load FSKen CD DR DCLK DATA t PU ...
Page 21
Data Sheet Ring Burst Line Reversal A/B Wires A TRIGout Note 3 PWDN 250-400ms TE DC load TE AC load FSKen CD DR DCLK DATA t PU OSCout Figure 18 - Input and Output Timing for CCA Caller Display Service ...
Page 22
MT88E43 TIP/RING 1st Ring Ch. seizure A B TRIGout PWDN Note OSCout FSKen Note DCLK DATA Figure 19 - Input and Output Timing for Bellcore On-hook Data Transmission Associated with Notes: This on-hook ...
Page 23
Data Sheet CPE goes off-hook CAS TIP/RING A Note 1 PWDN Note 2 FSKen t PU OSCout t DP ESt t GP St/GT t REC StD (Note 6) Note DCLK DATA Figure 20 - Input and Output ...
Page 24
MT88E43 Notes: 5-76 Preliminary Information ...
Page 25
...
Page 26
For more information about all Zarlink products Information relating to products and services furnished herein by Zarlink Semiconductor Inc. or its subsidiaries (collectively “Zarlink”) is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in ...