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0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
Detailed Description
The MAX5970 includes a set of registers that are
accessed through the I 2 C interface. Some of the registers
are read only and some of the registers are read and write
that are updated to configure the MAX5970 for a specific
operation. See Tables 1a and 1b for the registers map.
Table 1a. Register Address Map (Channel Specific)
REGISTER
adc_chx_cs_msb
adc_chx_cs_lsb
adc_chx_mon_msb
adc_chx_mon_ lsb
min_chx_cs_msb
min_chx_cs_ lsb
max_chx_cs_msb
max_chx_cs_ lsb
min_chx_mon_msb
min_chx_mon_ lsb
max_chx_mon_msb
max_chx_mon_ lsb
uv1thr _chx_msb
uv1thr_chx_ lsb
uv2thr_chx_msb
uv2thr_chx_ lsb
ov1thr_chx_msb
ov1thr_chx_ lsb
DESCRIPTION
High 8 bits ([9:2]) of latest current-signal
ADC result
Low 2 bits ([1:0]) of latest current-signal ADC
result
High 8 bits ([9:2]) of latest voltage-signal
ADC result
Low 2 bits ([1:0]) of latest voltage-signal
ADC result
High 8 bits ([9:2]) of current-signal minimum
value
Low 2 bits ([1:0]) of current-signal minimum
value
High 8 bits ([9:2]) of current-signal maximum
value
Low 2 bits ([1:0]) of current-signal maximum
value
High 8 bits ([9:2]) of voltage-signal minimum
value
Low 2 bits ([1:0]) of voltage-signal minimum
value
High 8 bits ([9:2]) of voltage-signal maximum
value
Low 2 bits ([1:0]) of voltage-signal maximum
value
High 8 bits ([9:2]) of undervoltage warning
(UV1) threshold
Low 2 bits ([1:0]) of undervoltage warning
(UV1) threshold
High 8 bits ([9:2]) of undervoltage critical
(UV2) threshold
Low 2 bits ([1:0]) of undervoltage critical
(UV2) threshold
High 8 bits ([9:2]) of overvoltage warning
(OV1) threshold
Low 2 bits ([1:0]) of overvoltage warning
(OV1) threshold
CHANNEL 1
0x00
0x01
0x02
0x03
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
CHANNEL 2
0x04
0x05
0x06
0x07
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x24
0x25
0x26
0x27
0x28
0x29
RESET
VALUE
—
—
—
—
0xFF
0x03
0x00
0x00
0xFF
0x03
0x00
0x00
0x00
0x00
0x00
0x00
0xFF
0x03
READ/
WRITE
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R/W
12
_____________________________________________________________________________________
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