tle5010 Infineon Technologies Corporation, tle5010 Datasheet - Page 43

• Manufacturer Part Number: tle5010
• Description: Gmr Based Angular Sensor
• Manufacturer: Infineon Technologies Corporation

Draft
10.1
• This CRC is according to the
• Every new transfer resets the CRC generation.
• Every byte of a transfer will be taken into account to generate the CRC (also
• Generator Polynom: X8+X4+X3+X2+1, for the CRC generation the fast CRC
• The remainder of the fast CRC circuit is initial set to ’11111111
• Remainder is bit inverted before transmission.
Figure 13
The zero extension for initial CRC calculation is included!
Figure 13
10.2
The position of the ’0’ in a nibble corresponds to the given slave number.
The slave active byte (cccc_nnnn) is made up of a
• low nibble (nnnn). One ’0’ is generated always according to the slave number.
• high nibble (cccc). The ’0’ is only generated, if the readback CRC is correct.
Slave1: S_NO = 0
Slave2: S_NO = 1
Slave3: S_NO = 2
Slace4: S_NO = 3
Example for a communication disturbed by other bus participants:
Slave1: S_NO = 0
> Slave Active Byte: 1111_1110
Preliminary Data Sheet
TX_CRC
Input
Data Communication.
the sent command(s)).
generation circuit is used. (See
xor
shows the fast CRC Polynom.
CRC Generation
Slave Active Byte Generation
Fast CRC polynomial division circuit
&
1
bit 0 is pulled low
bit 1 is pulled low
bit 2 is pulled low
bit 3 is pulled low
bit 0 is pulled low, but the high nibble remains as ’1111’.
X0
1
X1
xor
J1850
1
X2
Figure
parallel Remainder
Bus-Specification of 15.Feb.1994 for Class B
xor
43
Slave Active Byte: 1110_1110
Slave Active Byte: 1101_1101
Slave Active Byte: 1011_1011
Slave Active Byte: 0111_0111
13)
1
X3
xor
Data Communication via SSC
1
X4
1
X5
B
’.
1
X6
1
V 0.9, 2007-05
X7
TLE5010
output
Serial
CRC