VS6724 Datasheet, PDF (102/118 Pages) STMicroelectronics – 2 Megapixel single-chip camera module

Programming model and register description
VS6724
Table 50. JPEG image characteristics (continued)
Index
JPEGImageCharacteristics⁽¹⁾
bOIFCLKRatio
0x2514
Default value
Purpose
Type
Possible values
uwThres
0x1
Determines the maximum PCLK output rate for the JPEG data, in
relation to the YUV pixel clock frequency
BYTE
0 ->PCLK is same frequency YUV pixel clock, for non JPEG
//for JPEG
1-> PCLK is 2 times slower
2-> PCLK is 4 times slower
3-> PCLK is 6 times slower
4-> PCLK is 8 times slower
5-> PCLK is 10 times slower
6-> PCLK is 12 times slower
7-> PCLK is 14 times slower
8-> PCLK is 16 times slower
9-> PCLK is 18 times slower
10-> PCLK is 20times slower
0x251b
0x251c
Default value
Purpose
Type
Possible values
1. Can be controlled in all stable states
0x0200
Sets the number of bytes of JPEG data are present in each Packet
(line), must equal uwLinelength
WORD
The number of bytes in a line is 2 x the value programmed into this
register, the maximum number of bytes in a line is 2KB.
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