Other Parts Discussed in Thread: DS90CR218A, SN74AXC8T245, TXV0106, SN75LVDS83B, SN75LVDS82
Tool/software:
Hi,
we are designing a system based on a camera and a frame grabber, and the communication interface is based on Channel-Link. In the camera side, we use a DS90CR217 serializer, which works at 1.26Gbps (21 LVTTL signals @ 60 MHz, 60Mbps per line).
However, in the frame grabber side, the FPGA banks only support a voltage up to 1.8V, so we need a deserializer that can provide LVCMOS outputs.
- We check DS90CR218A, but it seems it only works with 3.3V LVTTL levels, which is not compatible with our application
- Other solution is to use the DS90CR218A which provides 3.3V LVTTL signals and then use a high speed level shifter to translate them to 1.8V LVCMOS. For example, SN74AXC8T245 and TXV0106 seem to support our interface. The problem with this solution is the delay introduced by the level shifter, specially for the clock signal which also needs to be translated. Different delays in signals and clock can generate errors in the communication due to a bad synchronization.
So our questions are:
- Do you have other similar device which can work at 1.8V LVCMOS levels and it is compatible with the serializer DS90CR217?
- Do you think that the solution based on level shifter will work correctly?
- Do you recommend a different solution?
Thanks and regards,
Antonio.
