![]() Local loopback allows the user to route data from TSER to RSER and clock from TCLK and RCLK. Data from the transmit-side formatter is ignored.įigure 1. Data continues to pass through the receive-side framer of the device as it would normally. In remote loopback, data input by RTIP and RRING is transmitted back to TTIP and TRING through the jitter attenuator. When the RLB bit of the control register is set to high, the remote loopback is enabled. When the RLB bit of the control register is set to low, then remote loopback is disabled. From the far end equipment, the signal loops through the LIU and the jitter attenuator. This loopback allows the user to test the far end of the equipment link. There are six types of loopback supported by Maxim T1/E1/J1 transceivers. The signals from both ends can be compared and any discrepancy helps to trace the fault. In loopback mode, the device loops the signal from one end of the device to the other end of the sending device, after it has passed through a network or across a particular link. Loopback modes are useful for diagnostic testing of the device or equipment. T1 and E1 are terms used to refer to the transmission of 1.544Mbps and 2.048Mbps over any media. This application note contains an overview of the loopback functions for Maxim T1/E1/J1 transceivers. The discrepancy between the two helps to trace the fault. The signals from both ends can be compared. In loopback mode, the device loops the signal from one end of the device to the other end of the sending device after it has passed through a network or across a particular link.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |