Rainbow Electronics MAX5961 - Manual (Page 31)

MAX5961
0 to 16V, Quad, Hot-Swap Controller
with 10-Bit Current and Voltage Monitor
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Minimum and Maximum Value Detection
for Voltage Measurement Values
All voltage measurement values are compared with the
contents of minimum- and maximum-value registers,
and if the most recent measurement exceeds the
stored maximum or is less than the stored minimum, the
corresponding register is updated with the new value.
These peak detection registers are read/write accessi-
ble through the I
2 C interface (see Tables 32–35). The
minimum-value registers are reset to 0x3FF, and the
maximum-value registers are reset to 0x000. These
reset values are loaded upon startup of a channel or at
any time as commanded by register peak_log_rst (see
Table 36).
Table 32. ADC Minimum Voltage Conversion Register Format (High-Order Bits)
Description: Minimum voltage conversion result, high-order bits [9:2]
Register Titles: min_ch1_mon_h min_ch2_mon_h min_ch3_mon_h min_ch4_mon_h
Register Addresses: 0x14 0x1C 0x24 0x2C
R/W R/W R/W R/W R/W R/W R/W R/W
RESET
VALUE
vmin_9 vmin_8 vmin_7 vmin_6 vmin_5 vmin_4 vmin_3 vmin_2 0xFF
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Table 33. ADC Minimum Voltage Conversion Register Format (Low-Order Bits)
Description: Minimum voltage conversion result, low-order bits [1:0]
Register Titles: min_ch1_mon_l min_ch2_mon_l min_ch3_mon_l min_ch4_mon_l
Register Addresses: 0x15 0x1D 0x25 0x2D
R/W R/W R/W R/W R/W R/W R/W R/W
RESET
VALUE
vmin_1 vmin_0 0x03
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0
Table 34. ADC Maximum Voltage Conversion Register Format (High-Order Bits)
Description: Maximum voltage conversion result, high-order bits [9:2]
Register Titles: max_ch1_mon_h max_ch2_mon_h max_ch3_mon_h max_ch4_mon_h
Register Addresses: 0x16 0x1E 0x26 0x2E
R/W R/W R/W R/W R/W R/W R/W R/W
RESET
VALUE
vmax_9 vmax_8 vmax_7 vmax_6 vmax_5 vmax_4 vmax_3 vmax_2 0x00
bit 7 bit 6 bit 5 bit 4 bit 3 bit 2 bit 1 bit 0