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HDMI 2.2规格,正式发布
半导体行业观察· 2025-06-26 03:49
Core Viewpoint - The HDMI Forum has officially announced the next-generation video standard HDMI 2.2, which will be rolled out throughout the remainder of the year, featuring a new Ultra96 cable that surpasses DisplayPort in maximum bandwidth support [1]. Group 1: HDMI 2.2 Specifications - HDMI 2.2 improves bandwidth from 48 GB/s to 96 GB/s compared to HDMI 2.1, with new cables labeled "Ultra96" to ensure consistent performance across devices [3]. - The new bandwidth supports 16K resolution at 60 Hz and 12K resolution at 120 Hz, enabling 4K at 240 Hz with a color depth of up to 12 bits without compression [5]. - Only cables explicitly marked with Ultra96 can achieve these high video transmission capabilities, and manufacturers can claim HDMI 2.2 compliance without enforcing bandwidth limits [5]. Group 2: Compatibility and Features - HDMI 2.2 is backward compatible, allowing new cables to work with older ports and vice versa, ensuring at least HDMI 2.1 functionality [7]. - A new feature called "Latency Indication Protocol" (LIP) will help synchronize audio and video, particularly beneficial for complex home theater systems [7]. - The first HDMI 2.2 devices are expected to launch in the last quarter of the year, with AMD's upcoming UDNA GPU likely to be among the first to adopt this standard [7]. Group 3: Market Context - Currently, AMD's Radeon Pro graphics cards are the only ones fully supporting the DisplayPort 2.1b UHBR20 standard, while the RX 9000 series has a lower transmission rate of 54 GB/s [8]. - It remains to be seen whether AMD will implement similar UDNA technology to provide full HDMI 2.2 bandwidth exclusively on workstation GPUs [8].