•

A CRC nibble of 12-27 UT 

•

Optional a pause pulse 

Synchronisation

Frame

56 UT

12 … 27 UT

12 … 27 UT

12 … 27 UT

12 … 27 UT

12 … 27 UT

Status Nibble

Data Nibble 1

Data Nibble 3

Data Nibble 2

CRC

Figure 9

SENT standard frame

 

Single secure sensor:

The protocol consists of following nibbles

•

A synchronization pulse (56UT)

•

A status nibble of 12-27 UT

•

3 data nibbles of 12-27 UT, transmitting a 12bit angle value

•

2 nibbles with a 8bit rolling counter information

•

1 nibble as the inverted 1st data nibble

•

A CRC nibble of 12-27 UT

•

A pause pulse, this is optional and can be deactivated

•

A short serial message, this is optional and can be deactivated

Synchronisation

Frame

56 UT

12 … 27 UT

12 … 27 UT

12 … 27 UT

12 … 27 UT

12 … 27 UT

Status Nibble

Data Nibble 1

Data Nibble 3

Data Nibble 2

CRC

12 … 27 UT

12 … 27 UT

Inverted

Data Nibble 1

Rolling Counter Rolling Counter

12 … 27 UT

Figure 10

SENT single secure frame

 

SENT nibble low time

The nibble low time tlow can be configured to be 3UT or 5UT. This can reduce the overall frame length. The low time

includes the fall time of the edge, therefore it has to be ensured that the fall time of the edge is fast enough to reach

the low level within the configured low time (SENT Configuration Parameters [EC-Table]).

Note:

A nibble low time of 3UT is not compliant with the SENT standard SAE J2716 JAN2010.

Synchronisation

Frame

Status Nibble

Data Nibble 1

Data Nibble 3

Data Nibble 2

tlow

Figure 11

SENT nibble low time

 

TLE49SR

Datasheet

5  Specific module descriptions

Datasheet

19

Rev. 1.1.1

2024-03-13