ICUT
參數(shù)資料
型號(hào): SMARTPSE24-KIT
廠商: Silicon Laboratories Inc
文件頁數(shù): 17/36頁
文件大?。?/td> 0K
描述: KIT EVAL REF 24PORT SPI/UART
標(biāo)準(zhǔn)包裝: 1
主要目的: 電源管理,以太網(wǎng)供電(POE),PSE
已用 IC / 零件: Si3452,Si3482,Si3500
已供物品: 板,線纜,CD
相關(guān)產(chǎn)品: SI3482-A01-GM-ND - IC CTLR POE 24-48PORT PSE 24-QFN
336-1830-5-ND - IC POE CONTROLLER MIDSPAN 40QFN
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336-1832-5-ND - IC POE CONTROLLER MIDSPAN 40QFN
Si3452
24
Rev. 1.3
Table 23. Si3452 Port Configuration
PoE+ bit
Class
Auto Mode Setting of
ICUT Register
ICUT Nominal
Ilim Nominal*
0 or 1 don’t care
1
0x1E
97 mA
425 mA
0 or 1 don’t care
2
0x35
170 mA
425 mA
0 or 1 don’t care
0/3
0x75
375 mA
425 mA
0
4
0x75
375 mA
425 mA
1
4
0xC9
640 mA
850 mA
*Note:
During initial port turn-on (TSTART time of 60 ms), the current limit is set to 425 mA, even in PoE+ mode.
Table 24. Si3452 Command Codes
Command
CMD Register
[B5..B2]
[B1..B0] Command
Parameter
2 Byte Return Value
Power on port
0x04 | port no
0001b
2 bit port number1
Power off port
0x08 | port no
0010b
2 bit port number
Reset port
0x0C | port no
0011b
2 bit port number
Toggle detection
back-off timing2
0x10
0100b
NA
Reset chip
0x14
0101b
NA
Get VEE
0x18
0110b
NA
VEE in mV units
Read port current
0x1C | port no
0111b
2 bit port number
Port current in 100 A
units
Shut down
low-priority ports
0x20
1000b
NA
Notes:
1.
Port 1 has 2 bit port number 0x00; port 2 is 0x01, etc.
2.
This command toggles bit 0 of Register 0x1D. When bit zero is set, the detection back-off of 2 seconds is implemented
(alternative B or “midspan” mode).
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