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參數(shù)資料
| 型號(hào)： | DS2406X |
| 英文描述： | Dual Addressable Switch Plus 1K-Bit Memory |
| 中文描述： | 雙址開關(guān)與1K位存儲(chǔ)器 |
| 文件頁數(shù)： | 21/30頁 |
| 文件大小： | 156K |
| 代理商： | DS2406X |
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DS2406
21 of 30
Conditional Search ROM [ECh]
The Conditional Search ROM command operates similarly to the Search ROM command except that only
devices fulfilling the specified condition will participate in the search. This command provides an
efficient means for the bus master to identify devices in a multidrop system that have to signal a status
change, e.g. the opening of a window in a building control application.
The condition is specified by the bit functions CSS0 to CSS4 in Status Memory location 7. At power-on
all these bits are 1s. They can be changed by means of the Write Status command. As long as the device
remains powered up, the modified search conditions are available for use at any time. For the conditional
search, one can specify the polarity (HIGH or LOW; CSS0), the source (PIO-pin, channel flip flop or
activity latch; CSS1, CSS2) and the channel of interest (A, B or the logical OR of A, B; CSS3, CSS4).
Table 2 shows all qualifying conditions and the required settings for CSS0 to CSS4.
QUALIFYING CONDITIONS FOR CONDITIONAL SEARCH
Table 2
DESCRIPTION
CHANNEL SELECT
CONDITION
CHANNEL
CSS4
RESERVED
Unconditional
neither one
CONDITIONAL SEARCH SELECT CODE
SOURCE SELECT
CSS3
CSS2
Don’t care
0
0
At least one of these
bits needs to be 1
1
0
1
0
1
1
POLARITY
CSS0
0/1
0
CSS1
0
0
Activity Latch = 0
Activity Latch = 1
Channel FF = 0
(transistor on)
Channel FF = 1
(transistor off)
PIO Low
PIO High
Activity Latch = 0
Activity Latch = 1
Channel FF = 0
(transistor on)
Channel FF = 1
(transistor off)
PIO Low
PIO High
Activity Latch = 0
Activity Latch = 1
Channel FF = 0
(transistor on)
Channel FF = 1
(transistor off)
PIO Low
PIO High
A
A
A
0
0
0
1
1
0
0
1
0
A
0
1
1
0
1
A
A
B
B
B
0
0
1
1
1
1
1
0
0
0
1
1
0
0
1
1
1
1
1
0
0
1
0
1
0
B
1
0
1
0
1
B
B
1
1
1
1
1
0
0
1
1
1
1
1
0
0
1
1
1
1
1
0
0
1
0
1
0
A or B
A or B
A or B
A or B
1
1
1
0
1
A or B
A or B
1
1
1
1
1
1
1
1
0
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2407 | Dual Addressable Switch Plus 1K.Bit Memory |
| DS2407P | Dual Addressable Switch Plus 1K.Bit Memory |
| DS2407T | Dual Addressable Switch Plus 1K.Bit Memory |
| DS2407V | Dual Addressable Switch Plus 1K.Bit Memory |
| DS2407X | Dual Addressable Switch Plus 1K.Bit Memory |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2407 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Addressable Switch Plus 1K.Bit Memory |
| DS2407FP000 | 制造商:Thomas & Betts 功能描述:200A,CON,3P4W,MG,407,3P250V |
| DS2407MP000 | 制造商:Thomas & Betts 功能描述:200A,PLG,3P4W,MG,407,3P250V |
| DS2407MP00K | 制造商:Thomas & Betts 功能描述:200A,PLG,3P4W,MG,407,00K,3P250V |
| DS2407MR000 | 制造商:Thomas & Betts 功能描述:200A,NLT,3P4W,MG,407,3P250V |
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