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INA3221-Q1 Datasheet(PDF) 23 Page - Texas Instruments

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Part # INA3221-Q1
Description  Current and Voltage Monitor with Programmable Overcurrent Alerts
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

INA3221-Q1 Datasheet(HTML) 23 Page - Texas Instruments

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INA3221-Q1
www.ti.com
SBOS776B – MARCH 2016 – REVISED MARCH 2016
Product Folder Links: INA3221-Q1
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Copyright © 2016, Texas Instruments Incorporated
(1)
Type: R = read-only, R/W = read/write.
8.6 Register Maps
The INA3221-Q1 uses a bank of registers for holding configuration settings, measurement results, minimum and
maximum limits, and status information. Table 3 summarizes the INA3221-Q1 registers; see the Functional Block
Diagram section for an illustration of the registers.
8.6.1 Summary of Register Set
Table 3. Summary of Register Set
POINTER
ADDRESS
(Hex)
REGISTER NAME
DESCRIPTION
POWER-ON RESET
TYPE(1)
BINARY
HEX
0
Configuration
All-register reset, shunt and bus voltage ADC conversion times and
averaging, operating mode.
01110001 00100111
7127
R/W
1
Channel-1 Shunt Voltage
Averaged shunt voltage value.
00000000 00000000
0000
R
2
Channel-1 Bus Voltage
Averaged bus voltage value.
00000000 00000000
0000
R
3
Channel-2 Shunt Voltage
Averaged shunt voltage value.
00000000 00000000
0000
R
4
Channel-2 Bus Voltage
Averaged bus voltage value.
00000000 00000000
0000
R
5
Channel-3 Shunt Voltage
Averaged shunt voltage value.
00000000 00000000
0000
R
6
Channel-3 Bus Voltage
Averaged bus voltage value.
00000000 00000000
0000
R
7
Channel-1 Critical Alert
Limit
Contains limit value to compare each conversion value to
determine if the corresponding limit has been exceeded.
01111111 11111000
7FF8
R/W
8
Channel-1 Warning Alert
Limit
Contains limit value to compare to averaged measurement to
determine if the corresponding limit has been exceeded.
01111111 11111000
7FF8
R/W
9
Channel-2 Critical Alert
Limit
Contains limit value to compare each conversion value to
determine if the corresponding limit has been exceeded.
01111111 11111000
7FF8
R/W
A
Channel-2 Warning Alert
Limit
Contains limit value to compare to averaged measurement to
determine if the corresponding limit has been exceeded.
01111111 11111000
7FF8
R/W
B
Channel-3 Critical Alert
Limit
Contains limit value to compare each conversion value to
determine if the corresponding limit has been exceeded.
01111111 11111000
7FF8
R/W
C
Channel-3 Warning Alert
Limit
Contains limit value to compare to averaged measurement to
determine if the corresponding limit has been exceeded.
01111111 11111000
7FF8
R/W
D
Shunt-Voltage Sum
Contains the summed value of the each of the selected shunt
voltage conversions.
00000000 00000000
0000
R
E
Shunt-Voltage Sum Limit
Contains limit value to compare to the Shunt Voltage Sum register
to determine if the corresponding limit has been exceeded.
01111111 11111110
7FFE
R/W
F
Mask/Enable
Alert configuration, alert status indication, summation control and
status.
00000000 00000010
0002
R/W
10
Power-Valid Upper Limit
Contains limit value to compare all bus voltage conversions to
determine if the Power Valid level has been reached.
00100111 00010000
2710
R/W
11
Power-Valid Lower Limit
Contains limit value to compare all bus voltage conversions to
determine if the any voltage rail has dropped below the Power
Valid range.
00100011 00101000
2328
R/W
FE
Manufacturer ID
Contains unique manufacturer identification number.
01010100 01001001
5449
R
FF
Die ID
Contains unique die identification number.
00110010 00100000
3220
R


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