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參數資料
型號: MAX5952CUAX+
廠商: Maxim Integrated
文件頁數: 22/50頁
文件大小: 1006K
描述: IC PSE CNTRLR FOR POE 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:
工作溫度: 0°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
Watchdog
R1Dh, R1Eh, and R1Fh registers control the watchdog
operation. The watchdog function, when enabled, allows
the MAX5952 to gracefully take over control or securely
shuts down the power to the ports in case of software/
firmware crashes. Contact the factory for more details.
Address Inputs
A3, A2, A1, and A0 represent the four LSBs of the chip
address. The complete chip address is 7 bits (see
Table 4).
The four LSBs latch on the low-to-high transition of RESET
or after a power-supply start (either on V
DD
or V
EE
).
Address inputs default high through an internal 50k&
pullup resistor to V
DD
. The MAX5952 also responds to the
call through a global address 30h (see the Global
Addressing and Alert Response Protocol section).
I
2
C-Compatible Serial Interface
The MAX5952 operates as a slave that sends and
receives data through an I
2
C-compatible, 2-wire or
3-wire interface. The interface uses a serial-data input
line (SDAIN), a serial-data output line (SDAOUT), and a
serial-clock line (SCL) to achieve bidirectional commu-
nication between master(s) and slave(s). A master (typ-
ically a microcontroller) initiates all data transfers to and
from the MAX5952, and generates the SCL clock that
synchronizes the data transfer. In most applications,
connect the SDAIN and the SDAOUT lines together to
form the serial-data line (SDA).
Using the separate input and output data lines allows
optocoupling with the controller bus when an isolated
supply powers the microcontroller.
The MAX5952 SDAIN line operates as an input. The
MAX5952 SDAOUT operates as an open-drain output. A
pullup resistor, typically 4.7k&, is required on SDAOUT.
The MAX5952 SCL line operates only as an input. A
pullup resistor, typically 4.7k&, is required on SCL if
there are multiple masters, or if the master in a single-
master system has an open-drain SCL output.
High-Power, Quad, PSE Controller
for Power-Over-Ethernet
22   ______________________________________________________________________________________
0
1
0
A3
A2
A1
A0
R/W
Table 4. MAX5952 Address
Figure 4. 2-Wire Serial Interface Timing Details
SCL
SDAIN
t
LOW
t
HIGH
t
R
t
F
t
BUF
START
CONDITION
STOP
CONDITION
REPEATED START CONDITION
START CONDITION
t
HD, STA
t
SU, DAT
t
HD, DAT
t
SU, STA
t
HD, STA
t
SU, STO
Figure 5. 3-Wire Serial Interface Timing Details
SCL
SDAIN/SDA
t
LOW
t
HIGH
t
R
t
F
t
BUF
START
CONDITION
STOP
CONDITION
REPEATED START CONDITION
START CONDITION
t
HD, STA
t
SU, DAT
t
HD, DAT
t
SU, STA
t
HD, STA
t
SU, STO
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相關代理商/技術參數
參數描述
MAX5952CUAX+ 功能描述:熱插拔功率分布 Quad PSE Controller for POE 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
MAX5952CUAX+T 功能描述:熱插拔功率分布 Quad PSE Controller for POE 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
MAX5952DEAX+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX5952DEAX+T 制造商:Maxim Integrated Products 功能描述:HIGH-POWER QUAD PSE CONTROLLER FOR - Tape and Reel
MAX5952DUAX+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
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