Datasheet
Registers
The MAX9611/MAX9612 include five 12-bit data register
banks and two 8-bit control registers.
The two control registers are read/write registers used to
configure the ADC for different modes of operation.
Table 3 lists all the registers, their corresponding POR
values and their addresses.
Data Registers
The five 12-bit data registers banks comprise two 8-bit registers for 8 MSBs and 4 LSBs. The 12-bit data is split between
the two 8-bit data bytes as seen in Figure 1. They are read-only registers that hold the converted data. Do not issue a
STOP command until both bytes are read. Instead use a Repeated START command to read the second byte.
Byte 1
Byte 2
Control Register 1
Control Register 1 is an 8-bit write/read register that configures the MAX9611/MAX9612 for different modes of operation.
Tables 4 and 5 show the bit location and function for Control Register 1.
Table 3. Internal Register/Addresses
Table 4. Control Register 1 Bit Location
REGISTERS POR VALUES (hex) REGISTER ADDRESS (hex)
CSA DATA BYTE 1 (MSBs) 0x000 0x00
CSA DATA BYTE 1 (LSBs) 0x000 0x01
RS+ DATA BYTE 1 (MSBs) 0x000 0x02
RS+ DATA BYTE 1 (LSBs) 0x000 0x03
OUT DATA BYTE 1 ( MSBs) 0x000 0x04
OUT DATA BYTE 1 (LSBs) 0x000 0x05
SET DATA BYTE 1 (MSBs) 0x000 0x06
SET DATA BYTE 1 (LSBs) 0x000 0x07
TEMP DATA BYTE 1 (MSBs) 0x800 0x08
TEMP DATA BYTE 1 (LSBs) 0x000 0x09
CONTROL REGISTER 1 0x000 0x0A
CONTROL REGISTER 2 0x000 0x0B
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
MSB12 MSB11 MSB10 MSB09 MSB08 MSB07 MSB06 MSB05
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1 BIT 0
LSB05 LSB03 LSB02 LSB01 0 0 0 0
BIT NUMBER 7 6 5 4 3 2 1 0
BIT NAME MODE2 MODE1 MODE0 LR SHDN MUX2 MUX1 MUX0
POR VALUE 0 0 0 0 0 0 0 0
MAX9611/MAX9612 High-Side, Current-Sense Ampliers with
12-Bit ADC and Op Amp/Comparator
www.maximintegrated.com
Maxim Integrated
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