Remote Data Concentrator (RDC) is used to collect the distributed digital signals over the aircraft to the core processing machine.First of all, a solution is put forward to achieve the transformation between ARINC 429 bus data and AFDX network data through HI-3593 chip.HI-3593 has the SPI bus interface to facilitate with the FPGA chip integration.Based on this, the HI-3593 is combined with controller IP core of Ethernet MAC layer, Verilog is used to implement receive-send of SPI protocol and AFDX framing logic development, and eventually to achieve data centralization and conversion.Subsequently, the access to Synchronization Client (SC) in AFDX is proposed, which can achieve synchronization according to the received Protocol Control Frame (PCF), so that RDC can access to the Time Triggered Ethernet (TTE) with the prerequisite of complete compatibility with AFDX.