Introduction to HDMI DisplayPort and MIPI ICs
Introduction to HDMI DisplayPort and MIPI ICs.HDMI (High-Definition Multimedia Interface) is currently the most widely adopted high-definition audio-video transmission interface in the consumer electronics industry. Its core advantage lies in the capability of transmitting uncompressed high-definition audio and video signals simultaneously via a single cable. This design eliminates the complexity of multi-cable connections and avoids signal loss incurred when transmitting audio and video signals through separate channels.
DisplayPort (DP) is a digital video interface standard launched by the Video Electronics Standards Association (VESA), which targets personal computers and professional display devices. Its core design orientation is to meet the transmission requirements of high-performance display scenarios. Compared with HDMI, DisplayPort inherently features a higher bandwidth ceiling. The latest DP 2.1 standard supports an effective bandwidth of up to 80 Gbps, and can stably carry ultra-high-definition and high-refresh-rate video signals including 10K@60Hz, 8K@120Hz, and even 4K@240Hz. It also supports professional functions such as multi-screen splicing, Display Stream Compression (DSC), and adaptive synchronization technologies including G-SYNC and FreeSync.
MIPI IC stands for Mobile Industry Processor Interface Interface Control Chip, which refers to interface control chips developed in accordance with the protocol standards formulated by the MIPI Alliance. The MIPI Alliance was initiated and founded by manufacturers such as Motorola, Intel and Nokia, with the original intention of unifying internal interface standards for mobile devices and reducing hardware design costs.
Specific model numbers for HDMI DisplayPort and MIPI ICs
The TDP20MB421 is a 4-lane linear redriver integrated with a 2:1 multiplexer. This low-power, high-performance linear redriver is designed to support DisplayPort 2.1 sources (up to 20 Gbps) and AC-coupled HDMI 2.1 sources (up to 12 Gbps).
The receiver module of TDP20MB421 integrates a Continuous Time Linear Equalizer (CTLE) to provide programmable high-frequency gain capability. The equalizer can reopen input eye diagrams that have been completely closed due to inter-symbol interference (ISI) caused by interconnection media such as PCB traces. A linear output driver is connected downstream of the CTLE receiver. The linear data path of the TDP20MB421 retains the preset transmission characteristics. With high bandwidth, low inter-lane crosstalk, low additive jitter and excellent return loss performance, the device behaves almost identically to a passive component in the transmission link. Since the device is integrated into the passive channel between the source (Tx) and the receiver (Rx), DisplayPort and HDMI link training can be implemented smoothly through the device. The transparency of the device in the link training protocol helps to optimize the electrical performance of the link and minimize transmission latency. The data path of the device adopts an internal regulated power supply rail, which provides high immunity to power supply noise on the circuit board.
HDMI, DisplayPort, and MIPI IC Specifications
The HDMI DisplayPort and MIPI ICs parameters are as follows:
|
Protocols |
DisplayPort |
|
Rating |
Catalog |
|
Speed (max) (Gbpp) |
20 |
|
Operating temperature range (°C) |
-40 to 85 |
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