Octal E1/t1/j1 Line Interface Device -

Octal E1/t1/j1 Line Interface Device - ,The PM4318 Octal E1/T1/J1 Line Interface Device (OCTLIU) is a monolithic integrated circuit suitable for use in long haul and short haul T1, J1 and E1 systems with a minimum of external circuitry. The OCTLIU is configurable via Microprocessor control or SPI-compatible serial PROM Interface allowing feature selection without changes to external wiring. Analogue circuitry is provided to allow direct reception of long haul E1 and T1 compatible signals with up to 36 dB cable loss (at 1.024 MHz) in E1 mode or up to 36 dB cable loss (at 772 kHz) in T1 mode using a minimum of external components. Typically, only line protection, a transformer and a line termination resistor are required. The OCTLIU recovers Clock and data from the line. Decoding of AMI, HDB3 and B8ZS line codes is supported. In T1 mode, the OCTLIU also detects the presence of in-band loop back codes. The OCTLIU supports detection of loss of signal, pulse density violation and line code violation alarm conditions. Line code violations are accumulated for performance monitoring purposes. Internal analogue circuitry allows direct transmission of long haul and short haul T1 and E1 compatible signals using a minimum of external components. Typically, only line protection, a transformer and an optional line termination resistor are required. Digitally programmable pulse shaping allows transmission of DSX-1 compatible signals up to 655 feet from the cross-connect, E1 short haul pulses into 120 ohm twisted pair or 75 ohm coaxial cable, E1 long haul pulses into 120 ohm twisted pair as well as long haul DS-1 pulses into 100 ohm twisted pair with integrated support for LBO filtering as required by the FCC rules. In addition, the programmable pulse shape extending over 5-bit periods allows customization of short haul and long haul line Interface circuits to application requirements. By pmc-sierra
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PM4318 Pinout, Pinouts
PM4318 pinout,Pin out
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