max5961 Maxim Integrated Products, Inc., max5961 Datasheet - Page 23

• Manufacturer Part Number: max5961
• Description: 0 To 16v, Quad, Hot-swap Controller With 10-bit Current And Voltage Monitor
• Manufacturer: Maxim Integrated Products, Inc.

The four current-sense signals are sampled by the
internal 10-bit ADC, and the most recent results are
stored in registers for retrieval through the I
The current conversion values are 10 bits wide, with the
8 high-order bits written to one 8-bit register and the 2
low-order bits written to the next higher 8-bit register
address (Tables 9 and 10). This allows use of just the
high-order byte in applications where 10-bit precision is
not required. This split 8-bit/2-bit storage scheme is
Table 8. dac_chx Register Format
Table 9. ADC Current Conversion Results Register Format (High-Order Bits)
Table 10. ADC Current Conversion Results Register Format (Low-Order Bits)
Description:
Register Titles:
Register Addresses:
Description:
Register Titles:
Register Addresses:
Description:
Register Titles:
Register Addresses:
inew_9
bit 7
bit 7
R/W
bit 7
R
R
______________________________________________________________________________________
inew_8
bit 6
with 10-Bit Current and Voltage Monitor
bit 6
bit 6
R/W
R
R
Digital Current Monitoring
Most recent current conversion result, low-order bits [1:0]
adc_ch1_cs_l
0x01
0 to 16V, Quad, Hot-Swap Controller
Fast-comparator threshold DAC setting
dac_ch1
0x5A
Most recent current conversion result, high-order bits [9:2]
adc_ch1_cs_h
0x00
inew_7
bit 5
bit 5
R/W
bit 5
R
R
2
C interface.
bit 4
inew_6
bit 4
bit 4
R
R/W
R
dac_ch2
0x5B
adc_ch2_cs_h
0x04
adc_ch2_cs_l
0x05
bit 3
inew_5
R
bit 3
R/W
bit 3
used throughout the MAX5961 for all 10-bit ADC con-
version results and 10-bit digital comparator thresholds.
Once the PG_ output is asserted (see the Digital Voltage
Monitoring and Power-Good Outputs section), the most
recent current samples are continuously compared to
the programmable overcurrent warning register values.
If the measured current value exceeds the warning level,
the ALERT output is asserted. The MAX5961 response
to the overcurrent digital comparator is not altered by
the setting of the PROT input (Tables 11 and 12).
R
dac_ch3
0x5C
adc_ch3_cs_h
0x08
adc_ch3_cs_l
0x09
bit 2
inew_4
R
bit 2
bit 2
R/W
R
inew_1
inew_3
bit 1
bit 1
dac_ch4
0x5D
bit 1
adc_ch4_cs_h
0x0C
adc_ch4_cs_l
0x0D
R/W
R
R
inew_0
inew_2
bit 0
bit 0
bit 0
R/W
R
R
VALUE
RESET
VALUE
VALUE
RESET
RESET
0xBF
0x00
0x00
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