IMP8980DC IMP [IMP, Inc], IMP8980DC Datasheet
IMP8980DC
Related parts for IMP8980DC
IMP8980DC Summary of contents
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General Description This CMOS device is designed for switching PCM-encoded voice or data, under microprocessor control modern digital exchange, PBX or Central Office. It provides simultaneous connections for up to 256 64kbit/s channels. Each of the eight serial ...
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By integrating both switching and interprocessor communications, the IMP8980D allows systems to use distrib- uted processing and to switch voice or data in an ST-BUS architecture. Hardware Description Serial data at 2048 kbit/s is ...
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Message Mode; i.e., the contents of the Connection Memory Low are output on the ST-BUS output streams once every frame unless the ODE pin is low. In this mode the chip behaves as if bits 2 and ...
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Figure5 - Connection Memory High Bits No Corresponding Memory - These bits give 0s if read BIT NAME DESCRIPTION 2 Message When 1, the contents of the corresponding location in Connection Channel Memory Low are output on ...
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IMP8980D for communication with the line interface circuits. A larger digital switching system may be designed by cascading a number of IMP8980Ds. Figure 9 shows four IMP8980Ds arranged in a non-blocking configuration which can switch any ...
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Figure 7 Typical Simple Digital Switching System 8980 used as IMP8980 speed switch 8980 used in message IMP8980 mode for control and signalling Figure 8 Simple Digital Switching System Speech Switch 8980 Controlling µprocessor Control & Signalling 8980 Figure 9 ...
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Figure 10 Application Circuit D7-D0 A15-A0 MEK6802D3 R/W System MR VMA E 1 DTA 2 STi0 3 STi1 4 STi2 909Ω 5 STi3 1/4W 6 STi4 7 STi5 5V 8 STi6 IMP 9 STi7 5V 10 VDD 8980 11 F0i ...
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Absolute Maximum Ratings* Parameter Voltage on Digital Inputs 3 Voltage on Digital Outputs 4 Current at Digital Outputs 5 Storage Temperature 6 Package Power Dissipation * Exceeding these values may cause permanent damage. ...
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AC Electrical Characteristics † - Clock Timing (Figures 12 and 13) Characteristics 1 Clock Period* 2 Clock Width High 3 Clock Width Low 4 Clock Transition Time 5 Frame Pulse Setup TIme 6 Frame Pulse Hold Time 7 Frame Pulse ...
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AC Electrical Characteristics † - Serial Streams (Figures 11, 14, 15 and 16) Characteristics Inputs 1 STo0/7 Delay-Active to High Z 2 STo0/7 Delay-High Z to Active 3 STo0/7 Delay-Active to Active 4 STo0/7 Hold Time 5 Output Driver Enable ...
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AC Electrical Characteristics † - Processor Bus (Figures 11 and 17) Characteristics 1 Chip Select Setup Time 2 Read/Write Setup Time 3 Address Setup Time 4 A cknowledgement Fast Delay Slow 5 Fast Write Data Setup Time 6 Slow Write ...
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Pin Description Pin # Name 40 44 DIP PLCC - -15 - -18 - ...
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... Figure 2 Pin Connections STi3 STi4 STi5 STi6 STi7 VDD F0i C4i Ordering Information Ordering Part Number IMP8980DC IMP8980DE IMP8980DP IMP8980DP Pin PLCC DTA 1 40 CSTo STi0 2 39 ODE STi1 3 38 STo0 STi2 4 37 STo1 ...
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ISO 9001 Registered IMP, Inc. http://www.impweb.com 14 © IMP, Inc. IMP8980D DS-5-00 ...