PXD20RM Datasheet, PDF (1036/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

27.13.3 Extended frames
Header
8 bytes TX
8 bytes TX
HRF set
RX Interrupt
(ID not matched)
Configure DIR, DFL, _DBEF
CCS
set
DTRQ =1
Refill Buffer
Reset DBEF
Checksum TX
DTF set
TX Interrupt
Header
8 bytes RX
8 bytes RX
Checksum RX
HRF set
RX Interrupt
(ID not matched)
Configure DIR, DFL, _RMB,
CCS
DDRQ = 0
DBFF
set
Read Buffer
Reset RMB
DRF set
RX Interrupt
Figure 27-71. Programming consideration: extended frames
27.13.4 Timeout
T_{response_max}
OC1
Header RX/TX
Data RX
OCF is set
ERR Interrupt
Figure 27-72. Programming consideration: response timeout
T_{frame_max}
OC2
Header RX/TX
Data RX/TX
OCF is set
ERR Interrupt
Figure 27-73. Programming consideration: frame timeout
T_{header_max}
Header RX
Break
OC1
OCF is set
ERR Interrupt
Figure 27-74. Programming consideration: header timeout
27-80
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
Freescale Semiconductor