PXD20RM Datasheet, PDF (978/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Table 27-8. UART receiver scenarios (continued)
Scenario
Responses and suggestions
A framing error occurs during the reception of a byte.
• UARTSR[FE] is set.
• If LINIER[FEIE] = 1, an interrupt is generated. This
interrupt is helpful in identifying which byte has the
framing error, since there is only one register bit for
framing errors.
A new byte has been received, but the last received frame
has not been read from the buffer (UARTSR[RMB] has
not yet been cleared by the software)
• An overrun error will occur (UARTSR[BOF] will be set).
• One message will be lost (depending on the setting of
LINCR[RBLM]).
• An interrupt is generated if LINIER[BOIE] is set.
27.10 Memory map and register description
Table 27-9 shows the LINFlexD memory/register map for the LINFlex_0 module. Table 27-10 shows the
LINFlexD memory/register map for LINFlex_1, LINFlex_2 and LINFlex_3 (these modules support
master mode only and thus have no slave filter control registers). See the device memory map for the base
addresses.
Table 27-9. LINFlexD memory map (LINFlex_0 only)
Address offset
Register description
0x00
0x04
0x08
0x0C
0x10
0x14
0x18
0x1C
0x20
0x24
0x28
0x2C
0x30
0x34
0x38
0x3C
0x40
0x44
0x48
LIN control register 1 (LINCR1)
LIN interrupt enable register (LINIER)
LIN status register (LINSR)
LIN error status register (LINESR)
UART mode control register (UARTCR)
UART mode status register (UARTSR)
LIN timeout control status register (LINTCSR)
LIN output compare register (LINOCR)
LIN timeout control register (LINTOCR)
LIN fractional baud rate register (LINFBRR)
LIN integer baud rate register (LINIBRR)
LIN checksum field register (LINCFR)
LIN control register 2 (LINCR2)
Buffer identifier register (BIDR)
Buffer data register least significant (BDRL)
Buffer data register most significant (BDRM)
Identifier filter enable register (IFER)
Identifier filter match index (IFMI)
Identifier filter mode register (IFMR)
Location
on page 24
on page 27
on page 29
on page 32
on page 33
on page 36
on page 38
on page 39
on page 40
on page 41
on page 41
on page 42
on page 43
on page 44
on page 45
on page 46
on page 47
on page 47
on page 48
27-22
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor