Toshiba H1 SERIES TLCS-900 - Manual (Page 169)

TMP92CM22
2007-02-16 92CM22-167
Protocol
1. Select 9-bit UART mode on the master and slave controllers.
2. Set the SC0MOD0<WU> bit on each slave controller to 1 to enable data receiving.
3. The master controller transmits one-frame data including the 8-bit select code for
the slave controllers. The MSB (Bit8) <TB8> is set to “1”.
4. Each slave controller receives the above frame. If it matches with own select code,
clears <WU> bit to “0”.
5. The master controller transmits data to the specified slave controller whose
SC0MOD0<WU> bit is cleared to “0”. The MSB (Bit8) <TB8> is cleared to “0”.
6. The other slave controllers (whose <WU> bits remain at 1) ignore the received
data because their MSB (Bit8 or <RB8>) are set to “0”, disabling INTRX0
interrupts. The slave controller (<WU> bit
= “0”) can transmit data to the master
controller, and it is possible to indicate the end of data receiving to the master
controller by this transmission.
Start Bit0 1 2 3 4 5 6
Select code of slave controller
7 Stop 8
“1”
Start Bit0 1 2 3 4 5 6
Data
7 Stop Bit8
“0”