PXN20RM Datasheet, PDF (1012/1376 Pages) Freescale Semiconductor, Inc – PXN20 Microcontroller

Enhanced Serial Communication Interface (eSCI)
31.4.2.1.1 Inverted Data Frame Formats
The structures of the supported data frame formats in inverted polarity are shown in Figure 31-19. These
frame types are supported for reception only. The polarity of the RXD pin is controlled by the RXPOL bit
in the eSCI_ Control Register 2 (eSCI_CR2).
START
BIT
START
BIT
STOP
BIT
STOP STOP
BIT
BIT
Figure 31-19. Inverted SCI Frame Formats
31.4.2.2 Break Character Formats
The supported break character formats are specified in Table 31-17.
Table 31-17. Supported Break Character Formats
Control¹
Break Character Content
eSCI_CR3
M2
eSCI_CR1
M
eSCI_CR2
BRCL
Start
Bit
Character Bits
LIN Break Symbol (see Figure 31-20)
0
0
0
1
9
0
0
1
1
12
SCI Break Character (see Figure 31-21)
0
0
0
1
9
0
0
1
1
12
0
1
0
1
10
0
1
1
1
13
1 _{All codings not listed are reserved and must not be used.}
The structure and content of the LIN break symbols is shown in Figure 31-20.
Delimit
Bits
1
1
0
0
0
0
START
Break
BIT BIT0 BIT1 BIT2 BIT3 BIT4 BIT5 BIT6 BIT7 BIT8 Delimit
START
Break
BIT BIT0 BIT1 BIT2 BIT3 BIT4 BIT5 BIT6 BIT7 BIT8 BIT9 BIT10 BIT11 Delimit
Figure 31-20. LIN Break Symbol Format
The structure and content of the SCI break characters is shown in Figure 31-21.
31-22
PXN20 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor