DS2155 T1/E1/J1

DS2155Register Name:T1CCR1Register Description: T1 Common Control Register 1Register Address: 07hBit # 7 6 5 4 3 2 1 0Name - - - - - TFM PDE TLOOPDefault 0 0 0 0 0 0 0 0Bit 0/Transmit Loop Code Enable (TLOOP). See Programmable In-Band Loop Codes Generation and Detection for details.0 = transmit data normally1 = replace normal transmitted data with repeating code as defined in registers TCD1 and TCD2Bit 1/Pulse Density Enforcer Enable (PDE). The framer always examines both the transmit and receive data streams forviolations of the following rules, which are required by ANSI T1.403: no more than 15 consecutive zeros and at least N onesin each and every time window of 8 x (N +1) bits where N = 1 through 23. Violations for the transmit and receive data streamsare reported in the INFO1.6 and INFO1.7 bits respectively. When this bit is set to one, the DS2155 will force the transmittedstream to meet this requirement no matter the content of the transmitted stream. When running B8ZS, this bit should be set tozero since B8ZS encoded data streams cannot violate the pulse density requirements.0 = disable transmit pulse density enforcer1 = enable transmit pulse density enforcerBit 2/Transmit Frame Mode Select (TFM).0 = D4 framing mode1 = ESF framing modeBit 3/Unused, must be set to zero for proper operation.Bit 4/Unused, must be set to zero for proper operation.Bit 5/Unused, must be set to zero for proper operation.Bit 6/Unused, must be set to zero for proper operation.Bit 7/Unused, must be set to zero for proper operation.45 of 242