Am2055

Am2055 is a kind of extended PCM interface controller (EPIC).There are some features as follows.First is board controller for up to 32 ISDN or 64 voice subscribers.The second is nonblocking switch for 128 channels (16, 32, or 64 kbps bandwidth).Besides, two consecutive 64 kbps channel can be switched as a single 128 kbps channel.Then is timeslot assignment freely programmable for all connected subcribers.Next is two serial interface (PCM and configurable).The sixth is programmable for a wide range of data rates (8 to 8192 kbps).The seventh is PCM interface and configurable interface.The eighth is handling of layer 1 functions.The ninth is comfortable P access to two selected channels.The tenth is 40 pin dual in line or 44 pin PLCC package.The last one is advanced low power CMOS technology.

What comes next is about the absolute maximum ratings of Am2055.The storage temperature is from -65 to +125.The ambient temperature under bias is from 0 to +70.

The following is about the DC characteristics of Am2055(ambient temperature under bias range;VDD=+5 V±5%,VSS=0 V).The minimum VIL (input low voltage) is -0.4 V and the maximum is 0.8 V.The minimum VIH (input high voltage) is 2.0 V and the maximum is VDD+0.4 V.The maximum VOL (output low voltage) is 0.45 V at IOL=7 mA for DD0-DD3, DU0-DU3 and IOL=2 mA for all other pins.The minimum VOH (output high voltage) is 2.4 V at IOH=-400 A and is VDD-0.5 V at IOH=-100 A.The maximum ICC (operational power current) is 9.5 mA at VDD=5 V, inputs at 0 V or VDD,no output loads,clock frequency>4096 kHz and 6.5 mA clock frequency4096 kHz.