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HDB3/B3ZS Encoder+Decoder: Overview Details Name: hdbn Created: 27-Apr-2003 23:24:03 Updated: 16-Mar-2006 11:57:23 CVS: browse Other project properties Category :: Communication controller Language :: VHDL Development status :: Production/Stable Project maintainers Allan Herriman Statistics view Opened bugs project has opened bugs Description This “core” is actually two cores – an HDB3/HDB2/B3ZS Encoder that converts NRZ data into P and N pulses according to ITU-T G.703, and a HDB3/HDB2/B3ZS Decoder that converts P and N pulses into NRZ data according to ITU-T G.703. Note: HDB2 and B3ZS are different names for the same encoding. HDB3 is typically used to encode data at 2.048 (E1), 8.448 (E2) and 34.368Mb/s (E3) B3ZS is typically used to encode data at 44.736Mb/s (T3) Features HDB3 / HDB2 selected by a generic. Code Error output on decoder. P and N outputs (on encoder) or inputs (on decoder) may be active high or active low, selected by a generic. P and N outputs on encoder may be controlled to be “full width” (NRZ) or “half width” (RZ) to suit the external LIU. Status Alpha tests look good. Code and documentation available in the HDBN project in CVSWeb