NXP TDA19978B四路HDMI接收方案

NXP 公司的TDA19978B是带均衡器的四路HDMI 1.3a接收器接口，适用于高达1080p的HDTV或高达UXGA的PC格式，并和HDMI 1.3a, DVI 1.0 以及CEA-861-D兼容，HDMI频率高达205 MHz。TDA19978B还嵌入了EDID存储器：253共享字节和每个HDMI输入专用的 3字节。电源1.8 V 和3.3 V，主要用在HDTV，高端TV，YCbCr 或RGB高速视频数字化仪，家庭影院放大器，DVD刻录机和AVR与HDMI分离器。本文介绍 TDA19978B主要特性和优势，方框图和应用框图。

Quad HDMI 1.3a receiver interface with equalizer (HDTV up to 1080p, up to UXGA for PC formats)

The TDA19978B is a four input HDMI 1.3a compliant receiver with embedded EDID memory. The built-in auto-adaptive equalizer improves signal quality and allows the use of cable lengths up to 25 m which are laboratory tested with a 0.5 mm (24 AWG) cable at 2.05 gigasamples per second. In addition, the TDA19978B is delivered with software drivers to ease configuration and use.

The TDA19978B supports:

• TV resolutions:

– 480i (1440 × 480i at 60 Hz), 576i (1440 × 576i at 50 Hz) to HDTV (up to 1920 × 1080p at 50/60 Hz)

– WUXGA (1920 × 1200p at 60 Hz) reduced blanking format

• PC resolutions:

– VGA (640 × 480p at 60 Hz) to UXGA (1600 × 1200p at 60 Hz)

• Deep Color mode in 10-bit and 12-bit (up to 205 MHz TMDS clock)
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