Infineon XENSIV TLI4971 - Application and Programming Circuit; Circuit; Precondition; In-circuit programming; Serial Inspection and Configuration Interface (SICI)

Application Note 2 of 31 Rev. 1.30
2022-03-01
Current Sensor TLI4971
Programming Guide and User Manual
Current Sensor TLI4971
Table of contents
Current Sensor TLI4971 ................................................................................................................... 1
About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 2
1 Application and Programming circuit ....................................................................................... 3
1.1 Circuit / Precondition .............................................................................................................................. 3
1.2 In-circuit programming ........................................................................................................................... 4
2 Serial Inspection and Configuration Interface (SICI) ................................................................... 6
2.1 Hardware Implementation ..................................................................................................................... 6
2.2 Entering Communication Mode .............................................................................................................. 6
2.3 Communication timing ........................................................................................................................... 7
2.3.1 Single low/high PWM transmission ................................................................................................... 7
2.4 Interface Timing Definition ..................................................................................................................... 9
2.5 Definition of Voltage Levels .................................................................................................................... 9
3 Interface description ............................................................................................................. 10
3.1 Command Structure .............................................................................................................................. 10
3.2 Read / Write Command ......................................................................................................................... 10
3.3 Interface Commands ............................................................................................................................. 11
3.4 Write and programming sequence ....................................................................................................... 12
3.5 Temporary register ................................................................................................................................ 12
3.6 Read Example (temperature register read out) ................................................................................... 13
4 EEPROM ............................................................................................................................... 14
4.1 EEPROM Content ................................................................................................................................... 15
4.2 Programming Example ......................................................................................................................... 17
4.3 Margin Test ............................................................................................................................................ 19
4.4 Cyclic Redundancy Check ..................................................................................................................... 21
4.5 Code example CRC calculation ............................................................................................................. 23
5 Operation Mode .................................................................................................................... 24
5.1 Single-Ended Mode ............................................................................................................................... 24
5.2 Fully-differential Mode .......................................................................................................................... 24
5.3 Semi-differential Mode.......................................................................................................................... 25
6 How to connect the sensor in a 5V domain................................................................................ 26
6.1 Single-Ended Mode ............................................................................................................................... 26
6.2 Semi and or Fully-differential Mode ..................................................................................................... 26
7 Diagnosis Mode ..................................................................................................................... 27
8 Glossary ............................................................................................................................... 29