| Title |
A Design and Implementation of MIPI A-PHY Retransmission(RTS) Layer |
| Authors |
신상웅(Sangung Shin) ; 강진구(Jin-Ku Kang) ; 김용우(Yongwoo Kim) |
| DOI |
https://doi.org/10.5573/ieie.2022.59.6.81 |
| Keywords |
Automotive SerDes; In-Vehicle Network; MIPI; A-PHY; FPGA |
| Abstract |
Recently, with the development of automotive technology, many electronic control units (ECUs) are connected to the vehicle. In particular, the performance and number of cameras and displays required for advanced driver assistance systems (ADAS) and automated driving systems (ADS) are increasing significantly. Therefore, the need for high-speed data transmission increases, but it is not easy to cope with the high-speed data transmission required by the existing vehicle network. To solve this problem, SerDes (Serializer/Deserializer) for automotive, MIPI A-PHY, has been proposed as a new standard. A-PHY proposed the RTS (Retransmission) layer, a new physical layer with a packet retransmission function to ensure standard data transmission in an automotive environment with a significant influence of noise. In this paper, we design and verify the RTS layer based on the newly proposed A-PHY standard. It was confirmed through RTL simulation that the designed RTS layer satisfies the retransmission operation suggested in the A-PHY standard, and for verification, a SerDes environment for integrated verification was configured using Xilinx KC705 development board and FMC (FPGA Mezzanine Card) Loopback module. As a result of synthesizing the designed A-PHY with RTS layer in Kintex-7 FPGA, it was confirmed that 3,924 LUTs, 2,019 registers, and 132 block memories were used, and the maximum operating frequency was 200MHz. |