Image data output device for image signal processor

An image data output device for an image signal processor that dividing and outputting image data of each horizontal line or each vertical line by a plurality of blocks when image data, which are outputted from a pixel array having a plurality of unit pixel for an image sensing, are stored in an external device, comprising:

• a decoder suitable for decoding and outputting image signals, which are sequentially outputted from the pixel array;
• an analog-digital converter suitable for sequentially converting decoded analog image signals provided from the decoder into digital signals;
• a pair of line memories suitable for alternately storing image data, which are outputted from the analog-digital converter, by the each horizontal line on a basis of the pixel array, outputting the image data using a first-in-first-out method, and outputting the image data by a block unit, wherein a first line memory of the pair of line memories includes whole memories corresponding to whole pixels of a first horizontal line of the pixel array and a second line memory of the pair of line memories includes whole memories corresponding to whole pixels of a second horizontal line of the pixel array;
• and
• a multiplexer suitable for sequentially selecting and outputting the image data, which are outputted from the pair of line memories by the block unit.