(Hong Kong)
Product Summary
The PEB20320HV3.4 is a Multichannel Network Interface Controller for HDLC, which handles up to 32 data channels of a full duplex PCM highway. The PEB20320HV3.4 performs layer 2 HDLC formatting/deformatting or V.110 and X.30 protocols up to a network data rate of 38.4 Kbit/s as well as transparent transmission for the DMI mode 0, 1 and 2. The processed data is passed on to an external memory shared with one or more host processors.
Parametrics
PEB20320HV3.4 absolute maximum ratings: (1)Ambient temperature under bias: PEB, TA: 0 to 70℃; PEF, TA: -40 to 85℃; (2)Storage temperature, Tstg: -65 to 125℃; (3)Voltage at any pin with respect to ground, VS: -0.4 VDD + 0.4 V.
Features
PEB20320HV3.4 features: (1)Serial Interface, Up to 32 independent communication channels.; Serial multiplexed (full duplex) input/output for 2048-, 4096-, 1544- or 1536-Kbit/s PCM highways; (2)Dynamic Programmable Channel Allocation, Compatible with T1/DS1 24-channel and CEPT 32-channel PCM byte format; Concatenation of any, not necessarily consecutive, time slots to superchannels independently for receive and transmit direction; Support of H0, H11, H12 ISDN-channels; Subchanneling on each time slot possible; (4)Bit Processor Functions (adjustable for each channel), HDLC Protocol; Automatic flag detection and transmission; Shared opening and closing flag; Detection of interframe-time-fill change, generation of interframe-time-fill "1" or flags; Zero bit insertion; Flag stuffing and flag adjustment for rate adaption; CRC generation and checking (16 or 32 bits); Transparent CRC option per channel and/or per message; Error detection (abort, long frame, CRC error, 2 categories; (5)of short frames, non-octet frame content); Special short frame mode to allow reception of "frames" with a least on byte length; ABORT/IDLE generation.
Diagrams
