STV0974 datasheet(15/69 Pages) STMICROELECTRONICS

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Functional description

STV0974

15/61

The MCU sequence order is top left to top right and top to bottom.

Figure 6 shows the MCU structure made of 4 blocks: 2 blocks of 8x8 Y component, 1 block of 8x8 U

component and one block of 8x8 V component. The series of blocks must be processed according

to this order.

Each block is composed of 8x8 components.

Figure 7 presents the structure of BlockY1, as an

example.

The data sequence inside each block is left to right and top to bottom.

To summarize, at the output of Raster to Block converter, the data order is the following:

Y data of blockY1 of first MCU (64 data from left to right, then top to bottom)

Y data of blockY2 of first MCU (64 data from left to right, then top to bottom)

U data of blockU of first MCU (64 data from left to right, then top to bottom)

V data of blockV of first MCU (64 data from left to right, then top to bottom)

Y data of blockY1 of second MCU (64 data from left to right, then top to bottom)

Y data of blockY2 of second MCU (64 data from left to right, then top to bottom)

U data of blockU of second MCU (64 data from left to right, then top to bottom)

V data of blockV of second MCU (64 data from left to right, then top to bottom)

... up to last image MCU.

Figure 6: Structure of each MCU

Figure 7: Structure of block Y1

MCU

BlockY1

BlockY2

BlockU

BlockV

BlockY1

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