DATA FORMAT CONVERSION CIRCUIT

摘要

DATA FORMAT CONVERSION CIRCUIT This circuit converts data in an ISDN data format to data in a T-carrier compatible data format and vice versa. The converted data is then stored in a memory for subsequent transmission. Due to the format differences, the data may be discontinuous. This circuit stores the data in memory in a contiguous fashion to promote and to facilitate the subsequent transmission of the data. This circuit includes a timing and control arrangement which indicates the size of each channel and frame of input data. This circuit generates memory addresses for the storage of both ISDN and T-carrier formatted data which are contiguous over multiple frames of data. A counting arrangement of this circuit converts data received in a module 32 format to stored data in a module 24 format or vice versa. In addition, this circuit provides output signals for generating proper framing bits and extended superframing information.