PEF22554HTV2.1

The PEF22554HTV2.1 is one member of the PEF22554HT family which designed as one kind of quad E1/T1/J1 framer and line interface component for long and short haul applications.

The following function of the PEF22554HTV2.1 has been changed:(1)version status in register VSTR changed from 02H to 05H;(2)the boundary scan part number changed to 142, the boundary scan ID changed to 1. A new BSDL file is required;(3)the pulse mask programming (registers XPM(2:0)) has to be adjusted;(4)the MCLK reference clock programming (registers GCM(8:1)) has to be changed;(5)variable master clock frequency function always enabled (GCM2(4)=1);(6)new feature "automatic short haul/long haul adjustment" available by setting LIM0.EQON=1.

The absolute maximum ratings of the PEF22554HTV2.1 can be summarized as:(1)ambient temperature under bias:-40 to 85°C;(2)storage temperature:-65 to 125°C;(3)IC supply voltage (pads,digital):-0.3 to 3.60 V;(4)IC supply voltage (core,digital):-0.3 to 1.98 V;(5)IC supply voltage PLL (analog):-0.3 to 3.60 V;(6)IC supply voltage receive (analog):-0.3 to 3.60 V;(7)IC supply voltage transmit (analog):-0.3 to 3.60 V;(8)voltage on any pin with respect to ground:-0.3 to 3.60 V.If you want to know more information such as the electrical characteristics about the PEF22554HTV2.1,please download the datasheet in www.seekic.com or www.chinaicmart.com .