PM4314-1 Datasheet, PDF (152/170 Pages) PMC-Sierra, Inc – QUAD T1/E1 LINE INTERFACE DEVICE

PM4314 QDSX
DATA SHEET
PMC-950857
ISSUE 5
QUAD T1/E1 LINE INTERFACE DEVICE
3. Negative currents flow into the device (sinking), positive currents flow out of
the device (sourcing).
4. I_DDOP is the sum of all power supply currents when transmitting all ones from
XPLS. For DSX-1, XPLS is using the 440’-550’ line buildout, which is the
most energetic, and a 50Ω resistor is connected across TXTIP and TXRING
of each quadrant in order to mimic a 100Ω line reflected back through a
1:1.36 transformer. For E1, XPLS is using the 75Ω template, and a 44Ω
resistor is connected across TXTIP and TXRING of each quadrant in order to
mimic a 75Ω line reflected back through a 1:1.36 transformer.
5. Typical Values are given as an aid to the system designer. Product is not
tested to the typical values given in the data sheet.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE 140