TMP19A43CD Datasheet, PDF (323/523 Pages) Toshiba Semiconductor – 32-bit RISC Microprocessor

TMP19A43
13.5.4 Mode 3 (9-bit UART)
The 9-bit UART mode can be selected by setting SC0MOD0 <SM1:0> to "11." In this mode, parity bits
must be disabled (SC0CR <PE> = "0").
The most significant bit (9th bit) is written to bit 7 <TB8> of the serial mode control register 0
(SC0MOD0) for transmit data and it is stored in bit 7 <RB8> of the serial control register SC0CR upon
receiving data. When writing or reading data to/from the buffers, the most significant bit must be
written or read first before writing or reading to/from SC0BUF. The stop bit length can be specified
using SC0MOD2 <SBLEN>.
Wakeup function
In the 9-bit UART mode, slave controllers can be operated in the wake-up mode by setting the wake-up
function control bit SC0MOD0 <WU> to "1." In this case, the interrupt INTRX0 will be generated only
when SC0CR <RB8> is set to "1."
TXD
RXD
Master
TXD
RXD
Slave 1
TXD
RXD
Slave 2
TXD
RXD
Slave 3
(Note) The TXD pin of the slave controller must be set to the open drain output mode using the
ODE register.
Fig. 13-26 Serial Links to Use Wake-up Function
TMP19A43(rev2.0) 13-41
Serial Channel (SIO)