TLE4998S3_V01 datasheet(38/39 Pages) INFINEON

Teilenummer	TLE4998S3

Bauteilbeschribung	Programmable Linear Hall Sensor

Download	39 Pages

Scroll/Zoom	100%

Hersteller	INFINEON [Infineon Technologies AG]

Direct Link	http://www.infineon.com

Logo

38 / 39 page

TLE4998S

SENT Output Definition (SAE J2716)

Data Sheet

38

V 1.0, 2008-07

13.3

Checksum Nibble Details

The Checksum nibble is a 4-bit CRC of the data nibbles including the status nibble. The

CRC is calculated using a polynomial x4 +x3 + x2 + 1 with a seed value of 0101.

In the TLE4998S it is implemented as a series of XOR and shift operations as shown in

the following flowchart:

Figure 14

CRC Calculation

A microcontroller implementation may use an XOR command plus a small 4-bit lookup

table to calculate the CRC for each nibble.

Figure 15

Example Code for CRC Generation

GENERATOR = 1101

SEED = 0101 , use this

constant as old CRC

value at first call

Pre-initialization :

VALUE

xor SEED

xor only if MSB = 1

VALUE

SEED

0

<<1

GENPOLY

xor

VALUE xor

SEED

4x

CRC calculation

Nibble

next Nibble

// Fast way for any µC with low memory and compute capabilities

char Data[8] = {…}; // contains the input data (status nibble , 6 data nibble , CRC)

// required variables and LUT

char CheckSum, i;

char CrcLookup[16] = {0, 13, 7, 10, 14, 3, 9, 4, 1, 12, 6, 11, 15, 2, 8, 5};

CheckSum= 5; // initialize checksum with seed "0101"

for (i=0; i<7; i++) {

CheckSum = CheckSum ^ Data[i];

CheckSum = CrcLookup[CheckSum];

}

; // finally check if Data [7] is equal to CheckSum

Ähnliche Beschreibung - TLE4998S3_V01

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
Infineon Technologies A...	TLE4998C3C	1Mb / 42P	Programmable Linear Hall Sensor Rev 1.1, Sep 2009
	TLE4998P3C	1Mb / 32P	Programmable Linear Hall Sensor Rev 1.1, Sep 2009
	TLE4998S	1Mb / 39P	Programmable Linear Hall Sensor V 1.0, July 2008
	TLE4998S3	1Mb / 39P	Programmable Linear Hall Sensor V 1.0, July 2008
	TLE4998P3	1Mb / 34P	Programmable Linear Hall Sensor V 1.0, July 2008
	TLE4997	2Mb / 34P	Programmable Linear Hall Sensor V 2.08, September 2008
	TLE4998P3CE1200	1Mb / 32P	Programmable Linear Hall Sensor Rev 1.1, September 2009
Micronas	HAL815	407Kb / 24P	Programmable Linear Hall Sensor
Infineon Technologies A...	TLE4998C3	1Mb / 44P	Programmable Linear Hall Sensor Rev 1.0, December 2008
Infineon Technologies A...	TLE4998S3C	1Mb / 36P	Programmable Linear Hall Sensor Rev 1.1, September 2009

More results

TLE4998S3 Datenblatt(PDF) 38 Page - Infineon Technologies AG

TLE4998S3 Datenblatt(HTML) 38 Page - Infineon Technologies AG

Ähnliche Teilenummer - TLE4998S3_V01

Ähnliche Beschreibung - TLE4998S3_V01

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Datenblatt Download

Link URL