PXD20RM Datasheet, PDF (1033/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

27.13.2 Slave node
Header
Data TX
Checksum TX
HRF set
RX Interrupt
Configure CCS, DIR, DFL,
Data Buffers
Set DTRQ
DTF set
TX Interrupt
Figure 27-61. Programming consideration: slave node, transmitter, no filters
Header
DDRQ = 0
Data RX
Checksum RX
HRF set
RX Interrupt
Configure CCS, DIR, DFL
Header
DRF set
RX Interrupt
HRF set
RX Interrupt
DDRQ = 1
Figure 27-62. Programming consideration: slave node, receiver, no filters
Header
Data TX
HRF set
RX Interrupt
Configure DIR, DFL,
Data Buffers
Set DTRQ
BEF set
ERR Interrupt
IOBE = 1
Figure 27-63. Programming consideration: slave node, transmitter, no filters, bit error
Header
Data RX
Checksum RX
HRF set
RX Interrupt
Configure DIR, DFL
DDRQ = 0
CEF set
ERR Interrupt
Figure 27-64. Programming consideration: slave node, receiver, no filters, checksum error
Header
Data TX
Checksum TX
HRF set
TX Interrupt
(ID matched)
Write Data Buffers
Set DTRQ
DTF set
TX Interrupt
Note: This configuration can be used in case the slave never receives data (for
example, as with a sensor).
Figure 27-65. Programming consideration: slave node, at least one TX filter, BF is reset, ID matches filter
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
27-77