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參數(shù)資料
| 型號： | SAA7128 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Digital video encoder |
| 中文描述： | 數(shù)字視頻編碼器 |
| 文件頁數(shù)： | 35/56頁 |
| 文件大小： | 192K |
| 代理商： | SAA7128 |
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2000 Mar 08
35
Philips Semiconductors
Product specification
Digital video encoder
SAA7128H; SAA7129H
Table 71
Subaddress 7BH
Table 72
Subaddress 7CH
Table 73
Subaddress 7EH
Table 74
Subaddress 7FH
BIT
SYMBOL
DESCRIPTION
7 to 0
LAL[7:0]
These are the 8 LSBs of the 9-bit code that determines the last active line. The MSB is
held in subaddress 7CH, see Table 72. LAL[8:0] = 0 coincides with the first field
synchronization pulse.
last active line = LAL[8:0] + 3 for M-systems
last active line = LAL[8:0] for other systems
BIT
SYMBOL
DESCRIPTION
7
TTX60
0 = enables NABTS (FISE = 1) or European teletext (FISE = 0); default state after
reset
1 = enables World Standard Teletext 60 Hz (FISE = 1)
MSB of the last active line code; see Table 71.
0 = new teletext protocol selected: at each rising edge of TTXRQ a single teletext bit is
requested (see Fig.23); default state after reset
1 = old teletext protocol selected: the encoder provides a window of TTXRQ going
HIGH; the length of the window depends on the chosen teletext standard (see Fig.23)
MSB of the first active line code; see Table 70.
MSB of the 9-bit code that selects the last line of occurrence of signal on pin TTXRQ in
even field; see Table 69.
MSB of the 9-bit code that selects the last line of occurrence of signal on pin TTXRQ in
odd field; see Table 67.
MSB of the 9-bit code that selects the first line of occurrence of signal on pin TTXRQ in
even field; see Table 68.
MSB of the 9-bit code that selects the first line of occurrence of signal on pin TTXRQ in
odd field; see Table 66.
6
5
LAL8
TTXO
4
3
FAL8
TTXEVE8
2
TTXOVE8
1
TTXEVS8
0
TTXOVS8
BIT
SYMBOL
DESCRIPTION
7 to 0
LINE[12:5]
Individual lines in both fields (PAL counting) can be disabled for insertion of teletext by
the respective LINE bits. Disabled line = LINEnn (50 Hz field rate). This bit mask is
effective only, if the lines are enabled by TTXOVS/TTXOVE and TTXEVS/TTXEVE.
SYMBOL
SYMBOL
DESCRIPTION
7 to 0
LINE[20:13]
Individual lines in both fields (PAL counting) can be disabled for insertion of teletext by
the respective LINE bits. Disabled line = LINEnn (50 Hz field rate). This bit mask is
effective only, if the lines are enabled by TTXOVS/TTXOVE and TTXEVS/TTXEVE.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SAA7128H | Digital video encoder |
| SAA7129 | Digital video encoder |
| SAA7129H | Digital video encoder |
| SAA7130 | PCI video broadcast decoder |
| SAA7134 | PCI audio and video broadcast decoder |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SAA7128A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital video encoder |
| SAA7128AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital video encoder |
| SAA7128H | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital video encoder |
| SAA7129 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital video encoder |
| SAA7129/DENC29A | 制造商:NXP Semiconductors 功能描述: |
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