TLE5014 datasheet(30/45 Pages) INFINEON

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Synchronisation

Frame

Status Nibble

Data Nibble 1

Data Nibble 3

Data Nibble 2

tlow

Final Datasheet

Rev. 1.0

2018-04-04

TLE5014

Interfaces

Figure 4-6 SPC nibble low time

4.3.2

SPC Features

Rolling counter

This 4bit counter counts the number of transmitted frames with rollover back to 0 and increment with each

message. This counter is for verification in the ECU that no frame is missed or that no frame is sent repeatedly

from the sensor. The rolling counter nibble is sent after the 3rd data nibble and before the CRC nibble.

The rolling counter nibble can be disabled, but to meet the safety requirements and target ASIL level of the

application, this is not recommended.

Optional, the rolling counter can be included in the CRC nibble, thus reducing the total number of nibbles and

therefore the total frame length. In this case, the rolling counter is reduced to a 2bit value. Further details can

be found in Chapter 4.3.3

Short Serial Message

The short serial message is an additional option which can be enabled and disabled. The short serial message

provides additional information in a slow channel transmitting a 8bit temperature value, a 16bit word

containing angle base & rotation direction information and a 32bit sensor ID.

In each SPC frame, one bit of information is transmitted. The start of the short serial message is indicated by

a “1” in bit [1] of the status nibble. For the next 15 SPC frames, this bit will contain a “0”. Information is

transmitted in blocks of 16bit with 1 bit per SPC frame in bit [0] of the status nibble.

4 bit message ID

8 bit data

4bit CRC (calculated from message ID and data bits)

The message ID is used for identification of the type of data received. All data are transmitted in the bit [0] of

the status nibble in the order MSB to LSB.

The transmitted information is as follows:

Message -ID 0: 8bit temperature value starting with MSB

Message -ID 1: 8bit of angle base (starting with MSB) address 0x00A0, bit [15:8]

Message -ID 2: 8bit of angle base (starting with MSB-8) address 0x00A0, bit [7:0]

Message -ID 3: 8bit temperature value starting with MSB

Message -ID 4: 8bit of sensor ID1 (starting with MSB) address 0x00F2, bit [15:8]

Message -ID 5: 8bit of sensor ID1 (starting with MSB-8) address 0x00F2, bit [7:0]

Message -ID 6: 8bit of sensor ID2 (starting with MSB) address 0x00F4, bit [15:8]

Message -ID 7: 8bit of sensor ID2 (starting with MSB-8) address 0x00F4, bit [7:0]

Message -ID 8 to Message -ID 15: Message -ID 0 to Message -ID 7 will be repeated

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