A 6.84 Gbps/lane MIPI C-PHY Transceiver Bridge Chip With Level-Dependent Equalization

Abstract

A 3.0 GSymbol/s/lane transceiver bridge chip, which fully supports the mobile industry processor interface (MIPI) C-PHY version 1.1 specification, is proposed for field-programmable gate array (FPGA)-based pattern generators and frame grabbers. In transmit mode, it converts parallel low-voltage complementary metal oxide semiconductor (CMOS) signals into high-speed three-level signals when performing serialization. In addition, deserialization including clock recovery from the received data is performed for its receive mode operation. A pre-emphasis transmitter and an elastic receiver that perform equalization according to the signal level are proposed to improve the signal integrity of high-speed three-level signals. The proposed MIPI C-PHY transceiver bridge chip is implemented using a 65 nm CMOS process with 1.2 V supply voltage. The area of each lane is 0.103 mm2 and the power consumption in high-speed transmit and receive modes is 2.96 mW/Gbps/lane and 5.62 mW/Gbps/lane, respectively. The measured peak-to-peak time jitter of the proposed high-speed transmitter, receiver, and clock recovery are 0.27 UI, 0.35 UI, and 90 ps, respectively, at a data rate of 3 GSymbol/s/lane.