NXP Semiconductors MPC5644A, Reference Manual, Page: 1354 / 1735

Enhanced Serial Communication Interface (ESCI)
MPC5644A Microcontroller Reference Manual, Rev. 6
1354 Freescale Semiconductor
31.3.2.11 LIN CRC polynomial register (eSCI_LPR)
31.3.2.12 Control register 3 (eSCI_CR3)
This register is used to control the frame formats and the generation of the ERR bit in the SCI data register
(eSCI_DR) .
Table 31-15. eSCI_LRR field descriptions
Field Description
D Receive Data . This field provides the data bytes of received LIN RX frames.
eSC 0x0018 Write: Anytime
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
P
W
Reset 1 1 0 0 0 1 0 1 1 0 0 1 1 0 0 1
Figure 31-13. LIN CRC polynomial register (eSCI_LPR)
This register provides the CRC polynom for generation and processing of CRC-enhanced LIN frames.
Table 31-16. eSCI_LPR field descriptions
Field Description
P Polynomial bit x
P[n]
. Used to define the LIN polynomial.
Reset value results in x
15
+ x
14
+ x
10
+ x
8
+ x
7
+ x
4
+ x
3
+ 1, which is the polynomial used for the CAN protocol.
eSC 0x001A Write: Anytime
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R 0 0 0 0
EROE ERFE ERPE M2
0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 31-14. Control register 3 (eSCI_CR3)
Table 31-17. eSCI_CR3 field descriptions
Field Description
3
EROE
ERR flag overrun enable.
0 eSCI_DR[ERR] flag not affected by overrun detection.
1 eSCI_DR[ERR] flag is set on overrun detection during frame reception.
2
ERFE
ERR flag frame error enable.
0 eSCI_DR[ERR] flag not affected by frame error detection.
1 eSCI_DR[ERR] flag is set on frame error detection for the data provided in eSCI_DR.