The MS9331 is a HDMI retime IC that supports a signaling rate up to 3.0Gbps and I2S & SPDIF output. With 3.0Gbps capability, the MS9331 can support the new 4K@30Hz video format and 4K (YCbCr420) @60Hz. The MS9331 equalizes incoming TMDS data with optimal quality regardless of the incoming signal quality. The highly acclaimed equalization technology provides for support of long or low-quality HDMI cables at even the highest speeds. Input terminations of the TMDS inputs and output current levels are both programmable. The chip also supports on-chip HDCP Keys RAM and EDID Memory.


Compliant with HDMI 1.4b

Support One Port DVI/HDMI input,1 Port DVI/HDMI output

Support HDMI 4K@30Hz and HDMI 2.0 YCbCr420 4K@60Hz

Support I2S and SPDIF output

Audio output sample rate 32KHz---192KHz

Support all compressed and uncompressed audio format

Adaptive input equalization

Output Pre-emphasis

Support 10/12/16 bit Deep Color input/output

Automatically monitor HDMI input signal

Automatically monitor the status of HDMI output devices

Support 5V TTL DDC

Integrated pre-programmed HDCP keys

Embedded EDID RAM saves external EDID ROM costs

No external crystal oscillations are required

QFN48 (6mm×6mm)

Function Block Diagram