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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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DS2196 датащи(PDF) 7 Page - Dallas Semiconductor |
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DS2196 датащи(HTML) 7 Page - Dallas Semiconductor |
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7 / 157 page  DS2196 7 of 157 1.2 Typical Applications 1.3 Functional Description The analog AMI/B8ZS waveform off of the T1 line is transformer coupled into the RRING and RTIP pins of the DS2196. The device recovers clock and data from the analog signal and passes it through the optional jitter attenuator to the receive side framer where the digital serial stream is analyzed to locate the framing/multiframe pattern. The DS2196 contains an active filter that reconstructs the analog received signal for the nonlinear losses that occur in transmission. The device has a usable receive sensitivity of 0 dB to –36 dB, which allows the device to operate on cables up to 6000 feet in length. The receive side framer locates D4 (SLC–96) or ESF multiframe boundaries as well as detects incoming alarms including, carrier loss, loss of synchronization, blue (AIS) and yellow alarms. The transmit side of the DS2196 is totally independent from the receive side in both the clock requirements and characteristics. The transmit formatter will provide the necessary frame/multiframe data overhead for T1 transmission. Once the data stream has been prepared for transmission, it is sent via the optional jitter attenuator to the wave shaping and line driver functions. The DS2196 will drive the T1 line from the TTIP and TRING pins via a coupling transformer. The line driver can handle both long haul (CSU) and short haul (DSX–1) lines. Long / Short Haul Line Interface Unit (LIU) Rx Framer A Rx HDLC Tx HDLC Tx Formatter A Rx Framer B Rx HDLC Tx HDLC Tx Formatter B Long / Short Haul Line Interface Unit (LIU) T1 Interface A T1 Interface B Microcontroller DS2196 1.544 MHz Long / Short Haul Line Interface Unit (LIU) Rx Framer A Rx HDLC Tx HDLC Tx Formatter A Rx Framer B Rx HDLC Tx HDLC Tx Formatter B T3 / SONET / Optical Mux T1 Network Interface Microcontroller DS2196 1.544 MHz NRZ Interface OFFICE REPEATER/NIU Long / Short Haul Line Interface Unit (LIU) Rx Framer A Rx HDLC Tx HDLC Tx Formatter A Rx Framer B Rx HDLC Tx HDLC Tx Formatter B Short Haul Line Interface Unit (LIU) Telco T1 Interface CPE T1 Interface Microcontroller DS2196 1.544 MHz Long / Short Haul Line Interface Unit (LIU) Rx Framer A Rx HDLC Tx Tx Formatter A Rx Framer B Rx HDLC Tx HDLC Tx Formatter B HDSL1 / HDSL2 Modem T1 Interface (Remote or CO Located) One or Two Sets of Twisted Pair Microcontroller DS2196 1.544 MHz NRZ Interface CSU APPLICATION HDSL1/HDSL2 APPLICATION T3/SONET/OPTICAL MULTIPLEXER APPLICATION |
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