PXS20RM Datasheet, PDF (1019/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

LIN Controller (LINFlexD)
Field
ABRQ
HTRQ
Table 31-26. LINCR2 field descriptions (continued)
Description
Abort Request
Set by software to abort the current transmission.
Cleared by hardware when the transmission has been aborted. LINFlexD aborts the transmission at
the end of the current bit.
This bit can also abort a wake-up request.
It can also be used in UART mode.
Header Transmission Request
Set by software to request the transmission of the LIN header.
Cleared by hardware when the request has been completed or aborted.
This bit has no effect in UART mode.
31.10.14 Buffer identifier register (BIDR)
This register contains the fields that identify a transaction and provide other information related to it.
All the fields in this register must be updated when an ID filter (enabled) in slave mode (Tx or Rx) matches
the ID received.
Offset: 0x34
Access: User read/write
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
R0 0 0 0 0 0 0 0 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
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R
DIR CCS 0 0
DFL
ID
W
w1c w1c
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 31-31. Buffer identifier register (BIDR)
Table 31-27. BIDR field descriptions
Field
DFL
DIR
Description
Data Field Length
These bits define the number of data bytes in the response part of the frame.
DFL = Number of data bytes - 1.
Normally, LIN uses only DFL[0:2] to manage frames with a maximum of 8 bytes of data. Identifier filters
are compatible with DFL[0:2] and DFL[0:5] . DFL[3:5] are provided to manage extended frames.
Direction
This bit controls the direction of the data field.
0: LINFlexD receives the data and copy them in the BDR registers.
1: LINFlexD transmits the data from the BDR registers.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
31-43