Rainbow Electronics MAX5970 User Manual
Page 23

0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
MAX5970
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Digital Voltage Monitoring and
Power-Good Outputs
The voltage at the load (MON_ inputs) is sampled by
the internal ADC. The MON_ full-scale voltage for each
channel can be set to 16V, 8V, 4V, or 2V by writing to
register mon_range. The default range is 16V (Tables
17 and 18).
Table 17. ADC Voltage Monitor Settings Register Format
Table 18. ADC Full-Scale Voltage Setting
Table 19. ADC Voltage Conversion Result Register Format (High-Order Bits)
Table 20. ADC Voltage Conversion Result Register Format (Low-Order Bits)
The most recent voltage conversion results can be read
from the adc_chx_mon_msb and adc_chx_mon_lsb reg-
isters (see Tables 19 and 20).
Description:
ADC voltage monitor full-scale range settings (for MON_ inputs)
Register Title:
mon_range
Register Addresses:
0x18
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RESET
VALUE
—
—
—
—
MON2_rng1
MON2_rng0
MON1_rng1
MON1_rng0
0x00
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
MONx_rng1
MONx_rng0
ADC FULL-SCALE VOLTAGE (V)
0
0
16
0
1
8
1
0
4
1
1
2
Description:
Most recent voltage conversion result, high-order bits [9:2]
Register Title:
adc_ch0_mon_msb
adc_ch1_mon_msb
Register Addresses:
0x02
0x06
R
R
R
R
R
R
R
R
RESET
VALUE
vnew_9
vnew_8
vnew_7
vnew_6
vnew_5
vnew_4
vnew_3
vnew_2
0x00
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
Description:
Most recent voltage conversion result, low-order bits [1:0]
Register Title:
adc_ch0_mon_lsb
adc_ch1_mon_lsb
Register Addresses:
0x03
0x07
R
R
R
R
R
R
R
R
RESET
VALUE
vnew_1
vnew_0
0x00
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0