Abstract
This paper describes the development of a Mobile Industry Processor Interface (MIPI) C-PHY transmitter (TX) fabricated using a 28-nm CMOS process with a 1 V supply. In its operational mode, the TX effectively converted parallel signals into low-voltage and high-speed tri-level signals, facilitating seamless serial data transmission. A key aspect of the proposed TX design was the integration of an equalizer (TxEQ) capable of implementing de-emphasis to mitigate channel-induced inter-symbol interference, thereby ensuring robust high-speed data transmission. Furthermore, the output driver was meticulously designed with an optimized structure to ensure impedance matching in different operating modes. Remarkably, the introduction of a boosting pre-driver further enhanced the driving capability, operating independently from the TxEQ of the output driver. Each lane occupied an area of 0.284 mm2, accommodating necessary components such as a pseudo-random bit sequence for random data generation. By employing a boosting technique, the TX achieved a commendable power efficiency of 1.21 mW/Gbps/lane while simultaneously delivering a remarkable 0.52 UI eye-opening at a data transfer rate of 4.56 Gbps/lane.
Original language | English |
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Pages (from-to) | 128993-128999 |
Number of pages | 7 |
Journal | IEEE Access |
Volume | 12 |
DOIs | |
State | Published - 2024 |
Keywords
- C-PHY transmitter
- boosting pre-driver
- driver circuit
- impedance matching
- mobile industry processor interface