BAT32G1x9 user manual | Chapter 19 Universal serial communication unit
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Rev.1.02
(4) Process flow (continuous send mode).
Figure 19-101 UART transmission (continuous send mode).
TxDq pin
INTSTq
shift register mn
BFFmn
SDRmn
SEmn
STmn
SSmn
TSFmn
MDmn0
transmit data1
transmit data1
transmit data2
transmit data2
transmit data3
transmit data3
shift operation
shift operation
shift operation
transmit data
transmit data
transmit data
Note
Note If the BFFmn
bit of the serial status register
mn(SSRmn)
is
"1"
(when valid data is saved in the serial data
register
mn(SDRmn)) is given When the SDRmn
register writes the transmit data, it rewrites the send data.
Note that the MDmn0
bit of the serial mode register
mn
(SMRmn)
can be rewritten even in operation
. However, in
order to catch the end-of-transmission interruption of the last sent data, it must be rewritten before the last bit of
transmission begins.
Remark m: unit number (m=0
~
2) n: channel number (n=0, 2) q: UART number (q=0
~
3) mn=00, 02, 10, 20