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0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
Deglitching of Digital Comparators
The five digital comparators per hot-swap channel
(undervoltage/overvoltage warning and critical, over-
current warning) all have a user-selectable deglitching
feature that requires two consecutive positive compares
The deglitching function is enabled or disabled per com-
parator by registers dgl_i, dgl_uv, and dgl_ov (Tables
38, 39, and 40). Writing a 1 to the appropriate bit location
in these registers enables the deglitch function for the
corresponding digital comparator.
before the MAX5970 takes action as determined by the
particular compare and the setting of the PROT input.
Table 38. OI Warnin g Comparators Deglitch Enable Register Format
Description:
Register Title:
Register Address:
Deglitch enable register for overcurrent warning digital comparators
dgl_i
0x3C
R
R
R
R
R
R
R/W
R/W
RESET
VALUE
—
—
Ch1_dgl_i
Ch0_dgl_i
0x00
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Table 39. UV Warning and Critical Comparators Deglitch Enable Register Format
Description:
Register Title:
Register Address:
Deglitch enable register for undervoltage warning and critical digital comparators
dgl_uv
0x3D
R
—
bit 7
R
—
bit 6
R
—
bit 5
R
—
bit 4
R/W
Ch1_dgl_
uv2
bit 3
R/W
Ch1_dgl_
uv1
bit 2
R/W
Ch0_dgl_
uv2
bit 1
R/W
Ch0_dgl_
uv1
bit 0
RESET
VALUE
0x00
Table 40. OV Warning and Critical Comparators Deglitch Enable Register Format
Description:
Register Title:
Register Address:
Deglitch enable register for overvoltage warning and critical digital comparators
dgl_ov
0x3E
R
—
bit 7
R
—
bit 6
R
—
bit 5
R
—
bit 4
R/W
Ch1_dgl_
ov2
bit 3
R/W
Ch1_dgl_
ov1
bit 2
R/W
Ch0_dgl_
ov2
bit 1
R/W
Ch0_dgl_
ov1
bit 0
RESET
VALUE
0x00
30
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