BT656 - Operational Overview

After an external reset, you will need to initialize the BT656 Controller. This involves:

• Writing the value for the start address in external memory to the Controller's START register.

• Writing the value for the size of the external memory space to be used, to the Controller's SIZE register.

• Write the value for the number of bytes (pixels) per line to the Controller's BPL register, in accordance with the number of pixels on a line and the color format required.

• Write the value for the number of visible bytes (pixels) per line to the Controller's VPBL register.

• Write the required value to the Controller's SCALE register to achieve the frame rate, and X and Y scaling desired.

• Write the required value to the Controller's MODE register to set the color mode required and also set the Controller running in either continuous mode or single frame mode.