MS1826A Four-Input One-Output Video Processor
The MacroSilicon MS1826A is a multi-function video processor for four HD inputs and one HD output, with one configurable I2S / SPDIF digital-audio interface. It supports four independent OSD windows with user-defined font libraries, four video playback engines, deinterlacing, video enhancement, and frame-rate conversion for systems that combine multiple HD inputs into one display output.
Key Specifications
| Item | Specification |
|---|---|
| HD input | 4 independent HD input channels |
| HD output | 1 HD output channel |
| 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 64 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 MS1826A.
Video Processing
- Supports VESA and CEA-861-F video formats, plus RGB / BT.601 / BT.709 colorimetry.
- Automatic input mode, video timing, and InfoFrame detection; input auto EQ and programmable EDID.
- Programmable input HPD and output HPD status 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
- Four-input to single-output multiview processors
- Multi-HD-input display aggregation systems
- Single-screen PIP / POP, split-screen, and OSD overlay products
- Display control systems requiring scaling, deinterlacing, rotation, and frame-rate conversion
Design Notes
- MS1826A is suited to multi-input / single-output systems. For four-output distribution, evaluate MS1826B; for 4-in / 4-out designs, evaluate MS1826.
- The embedded 64 MB DDR3 supports typical multiview and frame-buffer applications. Validate bandwidth for complex blending, rotation, and frame-rate conversion combinations.
- Power rails, DDR, high-speed HD interfaces, and OSD font configuration should follow authorized reference designs and system 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.