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M-986-2R2PL

Clare Inc.
Part Number M-986-2R2PL
Manufacturer Clare Inc.
Description MFC Transceivers
Published Mar 30, 2005
Detailed Description M-986-2R2 MFC Transceivers Features • Direct A-Law PCM digital input • 2.048 Mb/s clocking • Programmable forward/backwa...
Datasheet PDF File M-986-2R2PL PDF File

M-986-2R2PL
M-986-2R2PL

Overview
M-986-2R2 MFC Transceivers Features • Direct A-Law PCM digital input • 2.
048 Mb/s clocking • Programmable forward/backward mode • Programmable compelled/direct control • Operates with standard codecs for analog interfacing • Microprocessor read/write interface • Binary or 2-of-6 data formats • Single- or dual-channel versions • 5 volt power Applications • Test equipment • Trunk adapters • Paging terminals • Traffic recorders • PBXs Description The M-986-1R2 and -2R2 MFC Transceivers contain all the logic necessary to transmit and receive CCITT R2F (forward) and R2B (backward) multifrequency signals on one 40-pin integrated circuit (IC).
M-9861R2 is a single-channel version; M-986-2R2 provides two channels.
R1 single and dual multifrequency transceivers are also available as M-986-1R1 and 2R1.
Operating with a 20.
48 MHz crystal, the M-986 is capable of providing a direct digital interface to an Alaw-encoded PCM digital input.
Each channel can be connected to an analog source using a coder-decoder (codec) as shown in the Block Diagram below.
The M-986 can be configured by the customer to operate with the transmitter and receiver either coupled together or independently, allowing it to handle a compelled cycle automatically or via command from the host processor.
For the R2 versions of the M-986, A-law is used for coding/decoding.
The M-986 is configured and controlled through an integral coprocessor port.
Pin Assignments Ordering Information Part # M-986-1R2P M-986-1R2PL M-986-2R2P M-986-2R2PL Description 40-pin plastic DIP, Single Channel 44-pin PLCC, Single Channel 40-pin plastic DIP, Dual Channel 44-pin PLCC, Dual Channel Block Diagram DS-M976-2R2-R3 www.
clare.
com 1 M-986-2R2 Function Description The M-986 can be set up for various operating modes by writing two configuration bytes to the coprocessor port.
Configuration Options External/Internal Codec Clock (ECLK): If external codec clocking is selected, an external clocking source provides an 8kHz transmit ...


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