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參數資料
| 型號： | DS2409P |
| 英文描述： | MicroLAN Coupler |
| 中文描述： | 微型局域網耦合器 |
| 文件頁數： | 14/18頁 |
| 文件大小： | 415K |
| 代理商： | DS2409P |
DS2409
102199
14 of 18
USAGE EXAMPLE
Configuration:
A bus master controls a MicroLAN consisting of a trunk with many DS2409s that create
branches. Each of the DS2409s has a DS2430A connected to its auxiliary output to label its physical
location in the network (see Figure 10). iButton devices are constantly arriving at or departing from the
branches.
Task:
Identify one branch where an iButton has arrived and get the branch’s physical location. Determine
the population on that particular branch.
STEP
MASTER MODE
DATA (LSB FIRST)
1
TX
Reset
2
RX
Presence
3
TX
ECh
4
RX/RX/TX
for each of the 64 ROM bits
5
TX
33h
6
TX
FFh
7
RX
<data byte>*
8
RX
33h
9
TX
CCh
10
TX
F0h
11
RX
<32 data bytes>
12
TX
Reset
13
RX
Presence
14
TX
55h
15
TX
<8 byte ROM ID>
16
TX
CCh
17
TX
FFh
18
RX
<data byte>*
19
RX
CCh
20
TX
F0h
21
RX/RX/TX
for each of the 64 ROM bits
22
TX
Reset
23
RX
Presence
24
TX
55h
25
TX
<8 byte ROM ID>
26
TX
66h
27
RX
66h
28
TX
Reset
29
RX
Presence
repeat steps 12 to 21 for each of the remaining devices on the branch of the identified coupler
* 00h or 01h if presence pulse, FFh if no presence pulse
COMMENTS
Reset pulse (480–960 μs)
Presence pulse
Issue “conditional search ROM” command
Identify and access one of the qualifying devices
Issue Smart-On Auxiliary command
Send reset stimulus
Get reset response byte with presence info
Get confirmation byte
Issue “skip ROM” command
Issue “read memory” command
Get branch location information (DS2430A)
Reset pulse
Presence pulse
Issue “Match ROM” command
Access the previously identified coupler
Issue Smart-On Main command
Send reset stimulus
Get reset response byte with presence info
Get confirmation byte
Issue “search ROM” command
Identify one of the devices connected
Reset pulse
Presence pulse
Issue “Match ROM” command
Access the previously identified coupler
Send all lines off command
Get confirmation byte
Reset pulse
Presence pulse
Note:
The sequence of steps 12 to 21 logically decouples all other devices residing on the trunk from
responding to the search ROM command. The All Lines Off command is required to clear the event flag
that made the device respond to the conditional search command.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS2409P/T&R | 制造商:Maxim Integrated Products 功能描述:IC COUPLER MICROLAN 1-WIRE 6TSOC |
| DS2409P/T&R | 功能描述:接口 - 專用 RoHS:否 制造商:Texas Instruments 產品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| DS2409P+ | 制造商:Maxim Integrated Products 功能描述:MICROLAN COUPLER 制造商:Maxim Integrated Products 功能描述:MICROLAN COUPLER SMD TSOC-6 2409 |
| DS2411 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Silicon Serial Number with Vcc Input |
| DS2411C/W | 制造商:Maxim Integrated Products 功能描述:SINGLE, UNSORTED UN-BACKLAPPED WAFER - Gel-pak, waffle pack, wafer, diced wafer on film |
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