Dvdes-804 ((free))

| Parameter | Typical Value | |-----------|---------------| | | 480 p – 4K @ 60 Hz (HD‑SDI, HDMI 2.0, MIPI‑CSI‑2) | | Maximum Throughput | 12 Gbps (equivalent to 4K @ 60 Hz, 10‑bit Y′CbCr) | | Output Formats | 8‑/10‑bit Y′CbCr 4:2:0/4:2:2/4:4:4, RGB 4:4:4 | | Latency | < 2 ms (input capture to first valid pixel) | | Power Consumption | 2 W (typical) – 5 W (worst case, full 4K processing) | | Operating Temperature | –40 °C to +85 °C (industrial grade) | | Package | 48‑pin LQFP or 64‑pin BGA, optional mezzanine carrier board | | Control Interface | I²C (400 kHz), SPI (10 MHz), optional JTAG for firmware debug | | Firmware | Upgradable via USB‑C or SD‑card; includes auto‑gain control, de‑interlace algorithms, and a small RTOS for peripheral handling. |

| Symptom | Likely Cause | Diagnostic Steps | Remedy | |---------|--------------|-------------------|--------| | | Incorrect input pin mapping or missing power rail | 1. Probe VDD with multimeter. 2. Verify I²C address and read ID register. | Re‑wire pins, correct power sequencing, re‑flash firmware. | | Colour distortion (incorrect hue/saturation) | Colour‑space conversion mis‑configuration | Read the COL_SPACE register; check if Y′CbCr→RGB matrix is set for BT.709 vs BT.601. | Set proper matrix; enable automatic colour‑space detection if available. | | Interlaced artefacts | De‑interlacing disabled on an interlaced source | Look at DEINT_MODE register; confirm it is not OFF . | Enable progressive scan mode or select motion‑adaptive de‑interlacing. | | Excessive jitter or dropped frames | Clock source instability or insufficient bandwidth on the bus | Use a spectrum analyzer on the reference clock; monitor I²C/SPI bus load. | Replace oscillator with lower‑jitter part; increase I²C bus speed or switch to SPI. | | Over‑temperature shutdown | Sustained 4K processing without adequate cooling | Check thermal sensor register; verify heatsink attachment. | Add active cooling (fan) or lower the processing resolution. | dvdes-804