MC145745FW Freescale, MC145745FW Datasheet
MC145745FW
Specifications of MC145745FW
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MC145745FW Summary of contents
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... This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without notice. REV 0 7/96 MOTOROLA Motorola, Inc. 1996 Load ( Order this document by MC145745/D MC145745 FW SUFFIX 28 SOIC 1 CASE 751M ORDERING INFORMATION MC145745FW SOIC PIN ASSIGNMENT GND ref RxA CDA 3 26 TxA1 TLA ...
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Rx AMP RxA AND AGC CONTROL CDA LOOPBACK PATH V ref TxA2 – + TxA1 CLOCK CLKO GENERATOR X1 X2 MC145745 2 BLOCK DIAGRAM ANTI–ALIAS DTMF AND RECEIVER LOW–PASS CPT FILTER DETECTOR TONE FSK GENERATOR CARRIER DETECTOR SMOOTHING FSK V.21 ...
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PIN DESCRIPTIONS Pin Location Symbol Type 1, 14 GND — Ground — These are the ground pins of the digital and the analog circuits. The 0 V potential of the device is determined by the input voltage at these pins. ...
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PIN DESCRIPTIONS (continued) Pin Location Symbol Type 25 TxA2 O Transmit Buffer Output 2 (Inverting) — This pin is the inverting output of the line driver. When dBm (typ), differential output voltage (V ...
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TRANSMIT CARRIER CHARACTERISTICS Characteristic V.21 Carrier Frequency Mark “1” Originate Mode Originate Mode Space “0” V.21 Carrier Frequency Mark “1” Answer Mode Answer Mode Space “0” V.23 Carrier Frequency Mark “1” Space “0” Transmit Carrier Level Secondary Harmonic Level Out–of–Band ...
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DTMF TRANSMIT CHARACTERISTICS Characteristic Tone Output Level Low Group High Group High Group Pre–Emphasis DTMF Distortion DTMF Frequency Deviation Out–of–Band Level Setup Time DTMF RECEIVER CHARACTERISTICS Characteristic Input Resistance Detection Signal Level (Each Tone) Twist (High/Low Group) Frequency Detection Band ...
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Figure 2. FSK, DTMF, and CPT Carrier Detection Timing NO–DETECT É É É É É É É É É É É É É É É É – 3.5% Figure 3. DTMF Frequency Detection Bandwidth MOTOROLA ...
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SCP TIMING CHARACTERISTICS Ref. No. 1 SCPEN Active Before Rising Edge of SCPCLK 2 SCPCLK Rising Edge Before SCPEN Active 3 SCP Rx Setup Time Before SCPCLK Rising Edge 4 SCP Rx Hold Time After SCPCLK Rising Edge 5 SCPCLK ...
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DEVICE DESCRIPTION The MC145745 is a selectable modem chip compatible with V.21 (300 baud full duplex asynchronous) and V.23 mode 2 (1200 baud half duplex asynchronous). This device includes a DTMF generator, DTMF receiver, call–progress tone detector, answer tone generator, ...
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SCPEN Î Î Î Î SCPCLK Î Î Î Î Î Î Î Î SCP Rx Î Î Î Î SCP Tx HIGH IMPEDANCE SCPEN Î Î Î Î SCPCLK Î Î Î Î Î Î Î Î SCP Rx ...
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SCP REGISTER MAP The MC145745 register map is shown in Table 2. Seven of the 4–bit wide byte registers (BR) are provided in the register block. According to these published specifications, BR signi- fies each register and the address of ...
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Register b3 b2 FSK Mode 0 0 FSK Loopback 0 0 CPT Detect Mode 0 0 Answer Tone 0 0 Transmission Mode DTMF Transmission 0 1 Mode Single Tone 0 1 Transmission Mode Power Down Power Down ...
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Tone Receiver K Key K Low Group Input Frequency (Hz) D 941 1 697 2 697 3 697 4 770 5 770 6 770 7 852 8 852 9 852 0 941 * 941 # 941 A 697 B 770 ...
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MCU 3.579545 MHz LINE PROTECTION CIRCUIT * MC145745 14 600 : 600 TxA1 TxD RxD 600 TxA2 CD RxA SCPEN CDA SCPCLK 0.1 F TLA SCP Rx SCP Tx PB0 – PB3 TEST1 RESET TEST2 V ...
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A –Y– 28X 0.25 (0.010 0.18 (0.007 MOTOROLA PACKAGE DIMENSIONS FW SUFFIX SOIC CASE 751M–01 VIEW –Z– " ...
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Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of ...