FH8556 is a High Performance ISP for CIS ( CMOS Image Sensor ) and targeted on professional surveillance CCTV camera with internal HDcctv Tx. FH8550M supports 4K 4-lane CIS MIPI interface. Its analog video outputs support standard CVBS/960H/1280H, and 720P/1080P/3M/4M/8M HDcctv standard. FH8556 has high performance 3D De-noise, 2-frame line-by-line WDR and Dynamic Pixel Correction modules. It also has TOSD/GOSD, PM, MD and AF statistics modules along with SADC and PWM interfaces.