Instruction/ maintenance manual of the product 73M2901/5V TDK
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73M2901/5V Advanced Single Chip Modem DESCRIPTION The 73M2901/5V is a single - chip modem that combines all the controller (DTE) and data pump functions necessary to implement an intelligent V.
73M2901/5V Advanced Single Chip Modem 2 HARDWARE DESCRIPTION The 73M2901/5V is designed for a single +5 volt supply with low power consumption (~250mW @ 5 volts). The modem supports automatic standby idle mode. The modem will also accept a request to power down from the DTE via hardware control.
73M2901/5V Advanced Single Chip Modem 3 RESET A reset is accomplished by holding the RESET pin high. To ensure a proper power - o n reset, the reset pin must be held high for a minimum of 3 m s. At power on, the voltage at VPD, VPA, and RESET must come up at the same time for a proper reset.
73M2901/5V Advanced Single Chip Modem 4 PIN DESCRIPTIONS ( continued ) OSCILLATOR PIN DESCR IPTION PIN NAME 32 - PIN 44 - PIN TYPE DESCRIPTION OSCIN 24 26 I Crystal input for internal oscillator, also input for external source. OSCOUT 23 25 O Crystal oscillator output.
73M2901/5V Advanced Single Chip Modem 5 ELECTRICAL SPECIFICA TIONS ABSOLUTE MAXIMUM RAT INGS Operation above maximum rating may permanently damage the device .
73M2901/5V Advanced Single Chip Modem 6 ELECTRICAL SPECIFICA TIONS ( continued) MAXIMUM TRANSMIT LEVELS Vref=2.25V; VPA=5.0V Transmit type Maximum differential line level (dBm0) QAM - 5.5 DPSK - 3.4 FSK - 1.2 DT MF (high tone) - 6.0 DTMF (low tone) - 8.
73M2901/5V Advanced Single Chip Modem 7 ELECTRICAL SPECIFICA TIONS (continued) TRANSMITTER PARAMETER C ONDITIONS MIN NOM MAX UNIT Gain Adjust Tolerance By step - 0.3 0 0.3 dB Transmit Gain Boost SFR 96h bit 1 (TXBOOST) = 1 4.8 5.1 5.4 dB Total Harmonic Distortion (THD) 1Khz sine wave at output (TXAP - TXAN) 1.
73M2901/5V Advanced Single Chip Modem 8 ELEC TRICAL SPECIFICATION S ( continued ) RECEIVER ( continued ) PARAMETER TEST CONDITION MIN NOM MAX UNITS Input Impedance RXA 150 --- --- k W Receive Gain Boost SFR 96h bit 2 (Rxgain) = 1 2.7 3.0 3.3 dB VREF=1.
73M2901/5V Advanced Single Chip Modem 9 ELECTRICAL SPECIFICA TIONS (continued) DC CHARACTERISTICS PARAMETER SYMBOL CONDITION MIN NOM MAX UNIT 5V Operations Maximum Power Supply Normal Operation @ 5V H.
73M2901/5V Advanced Single Chip Modem 10 FIRMWARE DESCRIPTION 2 An “AT” command interpreter provides command and configuration of the 73M2901/5V. This provides the user a uniform interface to control t he modem in embedded applications. The signal processing is performed by obtaining data from and providing data to the integrated A/D converter.
73M2901/5V Advanced Single Chip Modem 11 DESIGN CONSIDERATION S TDK Semiconductor’s single chi p modem solutions include all the basic modem functions.
73M2901/5V Advanced Single Chip Modem 12 T elephone Line T1 5.1K R4 R3 21K R1 TXAP RXA TXAN 475 C1 0.033 m Midcom 671-8005 Recommended Line Interface R2 21K PRI R4 470 R3 5.1K C4 100nF GND JP1 HEADER 10 1 2 3 4 5 6 7 8 9 10 R1 10K GND VCC GND R13 nc Y1 11.
73M2901/5V Advanced Single Chip Modem 13 TYPICAL USA APPLICAT ION SCHEMATICS.
73M2901/5V Advanced Single Chip Modem 14 BER VS SNR BER VS R ECEIVE LEVEL V.22bis 3002A Lin e, 5.0V, 25C V.22bis 3002A Lin e, 5.0V, 25C 1.00E+00 1.00E-01 1.00E-02 1.00E-03 1.00E-04 4 10 11 12 13 14 15 16 17 18 19 8 12 16 20 24 28 32 36 40 44 1.00E-05 1.
73M2901/5V Advanced Single Chip Modem 15 32 PIN PLCC PIN - OUT PIN PIN NAME PIN PIN NAME 1 ASRCH 17 TXAP 2 RING 18 VREF 3 RELAY 19 VBG 4 RI 20 RXA 5 VND 21 VNA 6 VPD 22 VND 7 DCD 23 OSCOUT 8 DSR 24 OS.
73M2901/5V Advanced Single Chip Modem 16 MECHANICAL DRAWINGS 32 - Pin PLCC.
73M2901/5V Advanced Single Chip Modem 17 MECHANICAL DRAWINGS (continued) 44 - Pin TQFP (JEDEC LQFP).
73M2901/5V Advanced Single Chip Modem 18 PACKAGE PIN DESIGNAT IONS (Top View) 32 - Lead PLCC 44 - Pin TQFP 73M2901 - 32IH/5 73M2 901 - IGT/5 ORDERING INFORMATION PART DESCRIPTION ORDER NUMBER PACKAGIN.
73M2901/5V Advanced Single Chip Modem 19 August 22, 2001 Removed 5V pin callouts from package drawing. August 30, 2001 Updated Mechanical Drawing.
An important point after buying a device TDK 73M2901/5V (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought TDK 73M2901/5V yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data TDK 73M2901/5V - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, TDK 73M2901/5V you will learn all the available features of the product, as well as information on its operation. The information that you get TDK 73M2901/5V will certainly help you make a decision on the purchase.
If you already are a holder of TDK 73M2901/5V, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime TDK 73M2901/5V.
However, one of the most important roles played by the user manual is to help in solving problems with TDK 73M2901/5V. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device TDK 73M2901/5V along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
