PCLK & Bandwidth Calculator
Enter your resolution and frame rate to get the pixel clock and the interface bandwidth it demands — before you commit to an interface or a driver IC.
Results are engineering estimates for early sizing — always confirm against the module datasheet before design freeze.
PCLK = (Hactive+Hblank) × (Vactive+Vblank) × FPS. LVDS payload assumes 7-bit serial per pair on 4 data pairs; MIPI DSI assumes RGB888 video mode without compression. For exact blanking, use your SoC timing template.
FAQ
What blanking values should I use?
If you leave blanking at 0 the tool applies a typical 10 percent horizontal and 5 percent vertical auto estimate. For production, use the exact porch values from your SoC timing template.
Does this cover MIPI DSI bandwidth?
Yes — it estimates MIPI DSI payload assuming RGB888 video mode without compression, plus single and dual-link LVDS. Lane and D-PHY planning for DSI is a separate step.
When should I use the PCLK and bandwidth calculator?
Use it before you commit to an interface or driver IC: enter resolution and frame rate to get the pixel clock and RGB, LVDS and MIPI bandwidth the design must sustain.
What do link encoding and lanes mean for bandwidth?
Line coding adds overhead: 8b/10b costs 25 percent (×1.25) and 128b/132b about 3 percent (×1.03). Serial links split the encoded rate across lanes, so a 4-lane MIPI DSI or eDP link carries about one quarter of the total per lane. Compare your per-lane rate against the PHY limit (MIPI DSI ≤1.5, eDP HBR2 ≤5.4, DP HBR3 ≤8.1 Gbps per lane).
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