Pin configuration

STSMIA832

8/23

Frame synchronization

Each image frame begins with frame start synchronization code (SOF) and ends with frame

end synchronization code (EOF). Each line inside the frame begins with line start

synchronization code (SOL) and ends with line end synchronization code (EOL). The period

between EOL code and new SOL code is called line blanking period. Similarly, the time

between EOF code and new SOF code is called frame blanking period. The total size of one

image frame shall be a multiple of 128 bits.

In the beginning of frame and in the end of frame, line synchronization codes are replaced

by the frame synchronization codes. Synchronization signal usage is shown in Figure 4

below. Bit order of the synchronization codes is the same as for data, byte-wise LSB first.

The purpose of logical channels is to separate different data flows, which are interleaved in

the data stream.

The DMA channel identifier number is directly encoded in the 4-byte CCP embedded sync

codes. The CCP receiver will monitor the DMA channel identifier and de-multiplex the

interleaved video streams to their appropriate DMA channel. A maximum of 8 data streams

is supported. Valid channel identifiers are 0 to 7.

X = channel number 0 to 7.

Figure 7.

CCP2 Synchronization codes

Table 2.

Synchronization codes as per SMIA specifications

Name

Synchronization Codes

Notes

SOL

FFH 00H 00H X0H

Line Start Code

EOL

FFH 00H 00H X1H

Line End Code

SOF

FFH 00H 00H X2H

Frame Start Code

EOF

FFH 00H 00H X3H

Frame End Code

Logical Channels

FFH 00H 00H 0XH (to) FFH 00H 00H 7XH

DMA Channel Identifier from Channel 0 to 7