參數(shù)資料
型號(hào): SDA9589X
廠(chǎng)商: Electronic Theatre Controls, Inc.
英文描述: PIP IV Advanced SOPHISTICUS High-End Picture-In-Picture ICs
中文描述: 畫(huà)中畫(huà)四先進(jìn)SOPHISTICUS高端畫(huà)中畫(huà),圖像芯片
文件頁(yè)數(shù): 40/102頁(yè)
文件大?。?/td> 2306K
代理商: SDA9589X
SDA 9489X
SDA 9589X
System Description
Micronas
4-40
Preliminary Data Sheet
registers
DATAA/DATAB
are read. Both modes are useful to avoid continous polling of
the I2C bus. The micro-controller initiates I2C transfers only when required.
Figure 4-22
Example in pseudo-code for reading the data
4.11.4
The rating information is sent in the program rating packet of the current (sometimes
future) class in the XDS data stream. If only this information is desired the corresponding
XDS filter (class 01h, type 05h) should be used to suppress other data. The class/packet
bytes (0105h) precede the 2 bytes rating information. Each sequence is closed by the
end-of-packet byte (0fh) and a checksum. This checksum complements the byte
truncated sum of all bytes to 00h. Except comparison of the received rating with the
adjusted user rating threshold the micro-controller should check the parity of each byte
and validate the checksum to avoid miss-interpretation of wrong received data.
The SDA 9589X/SDA 9489X offer some alternatives to blocking the PIP channel
completely by switching it off (fig. (4-23)).
Violence Protection
Figure 4-23
Possibilities of PiP blocking
The Mosaic mode (
MOSAIC
) hides details of the picture by reduced sharpness and
increased aliasing. The picture looks scrambled and is less perceptible.
while (1){
i2c_read pip4_adr, status_reg_adr, status
if (status & data_valid_mask) {
i2c_read_inc pip4_adr, dataa_reg_adr, dataa, datab, status
process_data dataa, datab, status
}
}
“Blue Screen”
“Mosaic”
“Warning Message”
THIS PROGRAM
CONTAINS VIOLENT
SCENES
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