​GS12270​

Overview

The device fully supports SDI interface standards from HD-SDI (ST 292) to UHD-SDI at 12Gb/s (ST 2082-1), including all Multi-Link SDI standards at these rates. When configured for HDMI bridging, the GS12270 fully supports the HDMI 2.0 standard (up to 4Kp60 4:4:4 format). The color space and subsampling conversion feature of the GS12270 allows all the formats support.

The G12270 is the ideal solution for chip-to-chip connectivity using TMDS signaling for UHDTV products requiring a 12Gb/s UHD-SDI interface. For example, add a 12Gb/s UHD-SDI input interface to a UHDTV monitor simply by adding the GS12270 in SDI to HDMI Mode, with TMDS connection directly into off-the-shelf image processing ASICs.

For applications requiring multi-channel audio, the GS12270 includes a full 16-channel audio de-embedding and embedding feature. Up to 16 channels of digital audio at 48kHz sampling, or up to 8 channels at 96kHz sampling, can be extracted from the input video, and output on dedicated balls in AES/EBU or I2S serial digital formats. Existing audio is also simultaneously re-embedded in the selected output interface format. Users may also choose to insert up to 8 channels of new audio using dedicated audio input balls.

In HDMI to SDI Mode, the GS12270 can extract all HDMI InfoFrames, including HDR meta data. Video payload information is automatically converted to SMPTE ST 352 packets. Similarly, in SDI to HDMI Mode, SDI SMPTE ST 352 packets are extracted and converted to equivalent InfoFrames. All InfoFrame and ancillary data packets can be read via the GSPI host interface. Users can also choose to insert new SDI ancillary data packets via the GSPI.

In SDI Gearbox Mode, the device will automatically reorder the output serial stream according to the received ST 352 packets and may also duplicate outputs to unused serial output ports or route any input channel to an unused output. The device will also automatically compensate for up to 400ns of skew between Multi-Link SDI inputs. This aids in any lane-to-lane variance introduced by cable mismatch or upstream routing and distribution equipment.

Its small package and low power operation make the device ideal for adding UHD-SDI interfaces to existing HDMI 2.0 based UHDTV products, and for low-cost SDI/HDMI converters and extenders.

Features