we design the transceiver with ad9122, how to get ad9122 reference design?
Could you be a bit more specific as to what exactly you're looking for as far as reference design?
Here are a few resources online for some information:
AD9122 Product Page (datasheet, circuit notes, evaluation board kits): http://www.analog.com/en/products/digital-to-analog-converters/da-converters/ad9122.html#product-overview
AD9122 Evaluation Board Wiki Page (evaluation board schematics, Gerber files etc): https://wiki.analog.com/resources/eval/dpg/eval-ad9122
FMCOMMS1 Reference Board (AD9122 DAC and AD9243 ADC on board + clock circuitry): http://www.analog.com/en/design-center/evaluation-hardware-and-software/evaluation-boards-kits/EVAL-FMCOMMS.html#eb-overview