SLWU079D March 2012 – April 2016
Some TI high-speed DAC’s have LVDS inputs for the digitized data. These DACs are generally available on an EVM that connects directly to the TSW1400EVM. The common connector between the DAC EVM and the TSW1400EVM is a Samtec high-speed connector with differential pairs routed to adjacent pins and the pairs separated by a ground pin. A common pinout for the connector across a family of EVMs has been established. At present, the interface between these DAC EVMs and the TSW1400EVM has defined connections for 32 pairs of LVDS data lines, two data output clock pairs, four control pairs, two input clock pairs (sync, strobes, and so on), eight general purpose CMOS I/O pins (USB controlled) and 10 general purpose CMOS I/O pins (FPGA controlled). The TSW1400 CMOS interface provides up to 40 single-ended CMOS data outputs and two clock sources for CMOS DAC EVM formats. This interface has an option to be either 3-V or 1.8-V CMOS logic.