NOIP1FN016KA-GDI datasheet(39/87 Pages) ONSEMI

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Frame Synchronization

Table 24 shows the structure of the frame synchronization

code. Note that the table shows the default data word

(configurable). If more than one window is active at the

same time, the sync channel transmits the frame

synchronization codes of the window with highest index

only.

Table 24. FRAME SYNCHRONIZATION CODE DETAILS

Sync Word Bit

Position

Address

Default Value

Description

9:7

N/A

0x5

Frame start (FS) indication

9:7

N/A

0x6

Frame end (FE) indication

9:7

N/A

0x1

Line start (LS) indication

9:7

N/A

0x2

Line end (LE) indication

6:0

117[6:0]

0x2A

These bits indicate that the received sync word is a frame synchronization code. The value is

programmable by a register setting

Window Identification

Frame synchronization codes are always followed by a

4−bit window identification (bits 3:0). This is an integer

number, ranging from 0 to 15, indicating the active window.

If more than one window is active for the current cycle, the

highest window ID is transmitted.

Data Classification Codes

For the remaining cycles, the sync channel indicates the

type of data sent through the data links: black pixel data

(BL), image data (IMG), or training pattern (TR). These

codes are programmable by a register setting. The default

values are listed in Table 25.

Table 25. SYNCHRONIZATION CHANNEL DEFAULT IDENTIFICATION CODE VALUES

Sync Word Bit

Position

Address

Default Value

Description

9:0

118 [9:0]

0x015

Black pixel data (BL). This data is not part of the image. The black pixel data is used

internally to correct channel offsets.

9:0

119 [9:0]

0x035

Valid pixel data (IMG). The data on the data output channels is valid pixel data (part of the image).

9:0

125 [9:0]

0x059

CRC value. The data on the data output channels is the CRC code of the finished image data line.

9:0

126 [9:0]

0x3A6

Training pattern (TR). The sync channel sends out the training pattern which can be

programmed by a register setting.

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