508
Chapter 16
Asynchronous Serial Interface (UARTA)
Preliminary User’s Manual U17566EE1V2UM00
• 13 to 20 bits selectable for the SBF (Sync Break Field) in the LIN (Local
Interconnect Network) communication format
– Recognition of 11 bits or more possible for SBF reception in LIN
communication format
– SBF reception flag provided
• DMA support
Two different DMA trigger events in transmission mode (refer to
“DMA
Controller (DMAC)“ on page 309
)
16.2 Configuration
The block diagram of the UARTAn is shown below.
Figure 16-1
Block diagram of Asynchronous Serial Interface UARTAn
Note
For the configuration of the baud rate generator, see
Figure 16-11 on
page 533
.
UARTAn consists of the following hardware units.
Internal bus
UAnOTP0
UAnCTL0
UAnSTR
UAnCTL1
UAnCTL2
Receive shift
register
UAnRX
Filter
Selector
UAnTX
Transmission
controller
Reception
controller
Baud rate
generator
INTUAnR
INTUAnRE
INTUAnT
PCLK1 (8MHz)
PCLK2 (4MHz)
PCLK8 (62.5kHz)
TXDAn
RXDAn
Reception unit
Transmission unit
Transmit
shift register
Baud rate
generator
Selector
Internal bus
Clock
selector
electronic components distributor