MC145426P Freescale Semiconductor, Inc, MC145426P Datasheet

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MC145426P

Manufacturer Part Number
MC145426P
Description
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Universal Digital-Loop
Transceivers (UDLT)
that provide 80 kbps full–duplex data communication over 26 AWG and larger
twisted–pair cable up to two kilometers in distance. Intended primarily for use in
digital subscriber voice/data telephone systems, these devices can also be
used in remote data acquisition and control systems. These devices utilize a
256 kilobaud modified differential phase shift keying burst modulation technique
for transmission to minimize RFI/ EMI and crosstalk. Simultaneous power
distribution and duplex data communication can be obtained using a single
twisted–pair wire.
evolving, telephone switching hardware and software architectures.
telephone switch linecard and the MC145426 Slave UDLT for use at the remote
digital telset and/or data terminal.
reliable low–power operation and proven capability for complex analog/digital
LSI functions.
MC145422 Master UDLT
MC145426 Slave UDLT
REV 2
9/95
MOTOROLA
The MC145422 and MC145426 UDLTs are high–speed data transceivers
These devices are designed for compatibility with existing, as well as
The UDLT chip–set consists of the MC145422 Master UDLT for use at the
The devices employ CMOS technology in order to take advantage of their
Motorola, Inc. 1995
Provides Full–Duplex Synchronous 64 kpbs Voice/Data Channel and Two
8 kbps Signaling Data Channels Over One 26 AWG Wire Pair Up to Two
Kilometers
Compatible with Existing and Evolving Telephone Switch Architectures and
Call Signaling Schemes
Automatic Detection Threshold Adjustment for Optimum Performance Over
Varying Signal Attenuations
Protocol Independent
Single 5 V Power Supply
22–Pin PDIP, 24–Pin SOG Packages
Application Notes AN943, AN949, AN968, AN946, and AN948
Pin Controlled Power–Down and Loopback Features
Signaling and Control I/O Capable of Sharing Common Bus Wiring with
Other UDLTs
Variable Data Clock — 64 kHz to 2.56 MHz
Pin Controlled Insertion/Extraction of 8 kbps Channel into LSB of 64 kbps
Channel for Simultaneous Routing of Voice and Data Through PCM Voice
Path of Telephone Switch
Compatible with MC145500 Series PCM Codec–Filters
Pin Controlled Loopback Feature
Automatic Power–Up/Power–Down Feature
On–Chip Data Clock Recovery and Generation
Pin Controlled 500 Hz D3 or CCITT Format PCM Tone Generator for
Audible Feedback Applications
22
24
ORDERING INFORMATION
MC145422DW SOG Package
MC145426DW SOG Package
MC145422P
MC145426P
MC145422
MC145426
1
1
MC145422 MC145426
Order this document
Plastic DIP
Plastic DIP
SOG PACKAGE
PLASTIC DIP
DW SUFFIX
CASE 751E
CASE 708
P SUFFIX
by MC145422/D
1

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MC145426P Summary of contents

Page 1

... Audible Feedback Applications REV 2 9/95 MOTOROLA Motorola, Inc. 1995 Order this document by MC145422/D MC145422 MC145426 P SUFFIX PLASTIC DIP 22 CASE 708 1 DW SUFFIX SOG PACKAGE 24 CASE 751E 1 ORDERING INFORMATION MC145422P Plastic DIP MC145426P Plastic DIP MC145422DW SOG Package MC145426DW SOG Package MC145422 MC145426 1 ...

Page 2

MC145422 — MASTER (PLASTIC PACKAGE ref 2 21 LO1 LO2 RE1 TDC/RDC SI1 6 SO1 7 16 CCI SI2 ...

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MC145422 MASTER UDLT BLOCK DIAGRAM LO1 + 1 – 1 LO2 CCI MSI LI * — SE controlled latch MC145426 SLAVE UDLT BLOCK DIAGRAM + 1 LO1 LO2 – POWER– PD DOWN CONTROL X2 OSC X1 LI ...

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ABSOLUTE MAXIMUM RATINGS (Voltage Referenced Rating Symbol DC Supply Voltage V DD – Voltage, Any Pin Current, Any Pin (Excluding Operating Temperature Storage Temperature ...

Page 5

ANALOG CHARACTERISTICS ( Parameter Modulation Differential Amplitude ( 440 Ω) Modulation Differential DC Offset Demodulator Input Amplitude (See Note) Demodulator Input lmpedance NOTE: The input level into ...

Page 6

CLK, TDC, RDC, RE1, CCI, MSI MSI VD, SO1, SO2 TDC Tx MC145422 MC145426 6 SWITCHING WAVEFORMS t w(H) t w(L) 90% 50% 10 Figure 1. 70% t PHL 70% Figure 2. 70% t PLH 70% ...

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TE1, RE1, MSI TDC, RDC TDC, RDC, CLK Rx TE1 (MC145426) OR MSI (MC145422) SI1, SI2 MOTOROLA SWITCHING WAVEFORMS (continued) 70% t su3 70% Figure 4. 70% 30% t su5 t h1 70% 70% 30% 30% Figure 5. t su6 ...

Page 8

TE1 CLK RE1 t P3 70% CLK 70 70% CLK MC145422 MC145426 8 SWITCHING WAVEFORMS (continued) 70 70% Figure 7. 70% Figure 8. SO1, SO2 TE1 Figure 9. 30 70% 30% t ...

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MC145422 MASTER UDLT PIN DESCRIPTIONS V DD Positive Supply Normally Negative Supply This pin is the most negative supply pin, normally ref Reference Output This pin is the output of the internal reference ...

Page 10

Rx Receive Data Voice data is clocked into the UDLT from this pin on the falling edges of TDC/RDC under the control of RE1. RE1 Receive Data Enable 1 Input A rising edge on this pin will enable data on ...

Page 11

Tx Transmit Data Output This is a standard B–series CMOS output. Voice data is output on this pin on the rising edges of CLK while TE1 is high and is high impedance when TE1 is low. X1 Crystal Input A ...

Page 12

V supply and can be driven by TTL or CMOS logic. MASTER OPERATION In the master, data from the linecard is loaded into the re- ceive register each frame from the Rx pin ...

Page 13

MSI CCI/TDC/RDC TE1 Tx RE1 Rx VALID SI1, SI2 SO1, SO2 VD DEMODULATOR SYNC TRANSFER RECEIVE REGISTER TO MODULATION BUFFER, LATCH VALID DATA PIN, OUT (INTERNAL) LATCH SI1, SI2. TWO CCI CLOCKS LATER, TRANSFER RECEIVE REGISTER TO MODULATION BUFFER, START ...

Page 14

DEMODULATOR SYNC (INTERNAL) CLK (128 kHz) INTERNAL 2.048 MHz FROM XTAL TE1 RE1 VOICE Tx DON’T CARE Rx SI1, SI2 SO1, SO2 VD TRANSFER DEMODULATION BUFFER TO TRANSMIT REGISTER, GENERATE ENABLES, LATCH SI1, SI2, OUTPUT Tx, SO1, SO2, OUTPUT VALID ...

Page 15

Both the Differential–Phase Shift Keying and the Modified Differential–Phase–Shift Keying waveforms are shown in Figures 12 thru 14. The DPSK encodes data as phase rever- sals of a 256 kHz carrier indicated by a 180 phase shift ...

Page 16

MASTER Figure 14. Typical Signal Waveforms at Demodulator MC145422 MC145426 16 SLAVE BIT PATTERN — 1010101000 BIT PATTERN — RANDOM MOTOROLA ...

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Figure 15. Typical Multichannel Digital Line Card MOTOROLA MC145422 MC145426 17 ...

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MC145422 MC145426 18 Figure 16. Basic Digital Telset MOTOROLA ...

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MOTOROLA MC145426 MC145502 Figure 17. Full–Featured Digital Telset MC145422 MC145426 19 ...

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–A– 24X 0.010 (0.25 –T– SEATING PLANE G 22X Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation ...

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