MS1826B One-Input Four-Output Video Processor
The MacroSilicon MS1826B is a multi-function video processor for one HD input and four independent HD outputs, with one configurable I2S / SPDIF digital-audio interface. It supports four independent OSD windows with user-defined font libraries and can split, scale, enhance, and output one input video stream across multiple displays.
Key Specifications
| Item | Specification |
|---|---|
| HD input | 1 HD input channel |
| HD output | 4 independent HD output channels |
| Maximum resolution | Up to 4K@30Hz |
| Color space | RGB, YCbCr 4:4:4, YCbCr 4:2:2, YCbCr 4:2:0 (input only) |
| Color depth | 8 / 10 / 12 / 16 bit |
| Audio interface | 1-channel I2S and SPDIF digital-audio input or output, 32 kHz to 192 kHz |
| HD audio | HBR Audio supported |
| OSD | Four independent OSD windows, up to 4096 characters per window |
| Font library | User-defined 1 bpp / 2 bpp / 4 bpp mixed font library up to 128 KB; maximum character size 32 × 64 |
| Frame buffer | Embedded 128 MB DDR3 SDRAM, 16-bit access, DDR rate 1866 MT/s |
| Package | HLQFP-256, 28 mm × 28 mm |
| Power rails | 3.3 V, 2.5 V, 1.35 V, and 1.1 V |
| Compliance | Pb-free and RoHS 2.0 compliant |
Block Diagram
The block diagram shows how the HD input/output channels, video scaling pipeline, OSD, frame buffer, and control interfaces are connected inside MS1826B.
Video Processing
- Supports VESA and CEA-861-F video formats, plus RGB / BT.601 / BT.709 colorimetry.
- Automatic input video timing and InfoFrame detection, input auto EQ, and programmable EDID.
- Programmable input HPD and automatic output HPD detection.
- Interlaced-to-progressive conversion, edge-correction deinterlacing, global noise reduction, and 3:2 / 2:2 pull-down detection.
- Dynamic peaking and brightness, saturation, contrast, and hue adjustment.
- Four independent video scalers with independent horizontal and vertical scaling and flexible frame-rate conversion.
- Up to eight input video layers for mixer output with alpha blending and Color Key.
- One fixed-angle rotation path supporting 90°, 180°, and 270°.
- Video compression and frame buffering, input cropping, and horizontal/vertical video flip.
Typical Applications
- One-input to four-output video distribution and display-processing systems
- Multi-screen stitching, image splitting, and video-wall front-end processing
- Multi-output OSD overlay, scaling, and frame-rate conversion products
- AV systems requiring one input, multiple processed outputs, and digital audio handling
Design Notes
- MS1826B is suited to single-input / multi-output distribution systems. For multi-input aggregation, evaluate MS1826A; for full 4-in / 4-out systems, evaluate MS1826.
- Multiple outputs, scaling, rotation, blending, and frame buffering all consume DDR and internal processing bandwidth. Validate against the target resolution and layout.
- HD high-speed interfaces, DDR, power rails, HPD/EDID behavior, and OSD configuration should be confirmed with authorized reference designs and project validation.
References
Notes
This page summarizes information from MacroSilicon's public product page. Confirm feature combinations, parameter limits, package details, supply status, and production support against the latest authorized datasheet, reference design, and project validation results.