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參數資料
型號: MAX5935EAX+
廠商: Maxim Integrated
文件頁數: 20/44頁
文件大小: 700K
描述: IC CTRLR POWER QUAD 36-SSOP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 30
類型: 以太網供電控制器(PoE)
應用: 遠程外設(工業控制,相機,數據訪問)
內部開關:
電源電壓: -32 V ~ -60 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 36-BSOP(0.295",7.50mm 寬)
供應商設備封裝: 36-SSOP
包裝: 管件
Bit Transfer
Each clock pulse transfers one data bit (Figure 8). The
data on SDA must remain stable while SCL is high.
Acknowledge
The acknowledge bit is a clocked 9th bit (Figure 9),
which the recipient uses as a handshake receipt of each
byte of data. Thus, each byte effectively transferred
requires 9 bits. The master generates the 9th clock
pulse, and the recipient pulls down SDA (or the SDAOUT
in the 3-wire interface) during the acknowledge clock
pulse, such that the SDA line is stable low during the
high period of the clock pulse. When the master trans-
mits to the MAX5935, the MAX5935 generates the
acknowledge bit. When the MAX5935 transmits to the
master, the master generates the acknowledge bit.
Slave Address
The MAX5935 has a 7-bit long slave address (Figure
10). The bit following the 7-bit slave address (bit eight)
is the R/W bit, which is low for a write command and
high for a read command.
010 always represent the first three bits (MSBs) of the
MAX5935 slave address. Slave address bits A3, A2,
A1, and A0 represent the states of the MAX5935s A3,
A2, A1, and A0 inputs, allowing up to sixteen MAX5935
devices to share the bus. The states of the A3, A2, A1,
and A0 latch in upon the reset of the MAX5935 into reg-
ister R11h. The MAX5935 monitors the bus continuous-
ly, waiting for a START condition followed by the
MAX5935s slave address. When the MAX5935 recog-
nizes its slave address, it acknowledges and is then
ready for continued communication.
Global Addressing and Alert Response Protocol
The global address call is used in writing mode to write
the same register to multiple devices (address 0x60). In
read mode (address 0x61), the global address call is
used as the Alert Response address. When responding
to a global call, the MAX5935 puts out on the data line its
own address whenever its interrupt is active and so does
every other device connected to the SDAOUT line that
has an active interrupt. After every bit is transmitted, the
MAX5935 checks that the data line effectively corre-
sponds to the data it is delivering. If it is not, it then backs
off and frees the data line. This litigation protocol always
allows the part with the lowest address to complete the
transmission. The microcontroller can then respond to
the interrupt and take proper actions. The MAX5935
does not reset its own interrupt at the end of the Alert
Response protocol. The microcontroller has to do it by
clearing the event register through their CoR addresses
or activating the CLR_INT pushbutton.
Quad Network Power Controller
for Power-Over-LAN
20   ______________________________________________________________________________________
Figure 9. Acknowledge
SCL
SDA
BY TRANSMITTER
CLOCK PULSE FOR ACKNOWLEDGEMENT
START CONDITION
SDA
BY RECEIVER
1
2
8
9
S
Figure 10. Slave Address
SDA
SCL
1
0
A3
A2
A1
A0
0
MSB
LSB
ACK
R/W
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相關代理商/技術參數
參數描述
MAX5935EAX+ 功能描述:熱插拔功率分布 Quad Network Power Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5935EAX+T 功能描述:熱插拔功率分布 Quad Network Power Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5935EAX-T 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5936AAESA 功能描述:熱插拔功率分布 RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
MAX5936AAESA+ 功能描述:熱插拔功率分布 48V- Hot-Swap Controller RoHS:否 制造商:Texas Instruments 產品:Controllers & Switches 電流限制: 電源電壓-最大:7 V 電源電壓-最小:- 0.3 V 工作溫度范圍: 功率耗散: 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Tube
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