MAX5971BETI+ Maxim Integrated Products, MAX5971BETI+ Datasheet - Page 39

• Manufacturer Part Number: MAX5971BETI+
• Description: Hot Swap & Power Distribution IEEE 802.3af/at PSE Controller
• Manufacturer: Maxim Integrated Products

Specifications of MAX5971BETI+

• Lead Free Status / Rohs Status: Details

The miscellaneous configurations 2 register (R29h, Table
35) is used to enable the load stability safety check (see
the PD Detection section). On a power-up or after a reset
condition, this register is set to a default value of 0x00h.
Table 35. Miscellaneous Configurations 2 Register
Table 36. ICUT Register
Table 37. ICUT Current-Limit Threshold Settings
SYMBOL
Reserved
Reserved
Reserved
Reserved
Reserved
SYMBOL
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
LSC_EN
ICUT
Miscellaneous Configurations 2 Register (R29h)
ADDRESS = 2Ah
ADDRESS = 29h
010, 011, 100
ICUT_[2:0]
BIT NO.
BIT NO.
000
001
101
110
111
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
______________________________________________________________________________________
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
—
—
—
—
—
—
—
—
—
—
Reserved
Reserved
Reserved
Enables the load stability safety check
Internally connected. For a write command, always write a zero to this bit.
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
ICUT[2]
ICUT[1]
ICUT[0]
TYPICAL CURRENT-LIMIT THRESHOLD
Single-Port, 40W, IEEE 802.3af/at,
Not Used
(mA)
420
720
850
900
950
PSE Controller with I
The ICUT register (R2Ah, Table 36) is used to adjust
the device current limit and corresponding overcurrent
thresholds. On a power-up or after a reset condition, this
register is set to a default value of 0x00h. The MAX5971B
can automatically set the ICUT register (see Table 4) or
ICUT[2:0] can be manually written to by the software
(see Table 37) to manually adjust the current-limit and
overcurrent thresholds.
DESCRIPTION
DESCRIPTION
TYPICAL OVERCURRENT THRESHOLD
Not Used
(mA)
370
634
748
792
836
ICUT Register (R2Ah)
2
C
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