TMP92CZ26A
92CZ26A-339
Setting example: To link two slave controllers serially with the master controller using the
internal clock fIO as the transfer cloc k.
• Setting the master controller
• Setting the slave contro ller
Main routine
P9CR ← X X X X X −01
P9FC ← − − X X X −X1
P9FC2 ← X X X X X X X 1
Select P91 and P90 to function as the RXD0 and TXD0 pins
respectively (open-drain output).
INTES0 ← X 1 0 0 X 1 0 0 Enable INTRX0 and INTTX0.
SC0MOD0 ← 0 0 1 1 1 1 1 0 Set <WU> to 1 in 9-Bit UART Transmission Mode using fSYS as
the transfer clock.
Interrupt routine (INTRX0)
Acc ← SC0BUF
if Acc =Select code
Then SC0MOD0 ← − − − 0 − − − − Clear <WU> to 0.
Main routine
P9CR ← X X
X
XX
−01
P9FC ← − −
X
XX
−X1 Set P90 and P91 to function as the TXD0 and RXD0 pins
respectively.
INTES0 ← X 1 0 0 X 1 0 1 Enable the INTTX0 interrupt and set it to Interrupt Level 4.
Enable the INTRX0 interrupt and set it to Interrupt Level 5.
SC0MOD0 ← 1 0 1 0 1 1 1 0 Set fIO as the transmission clock for 9-Bit UART Mode.
SC0BUF ← 0 0 0 0 0 0 0 1 Set the select code for slave controller 1.
Interrupt routine (INTTX0)
SC0MOD0 ← 0 − − − − − − − Set TB8 to 0.
SC0BUF ← * * * * * * * * Set data for transmission.
TXD RXD
Master
TXD RXD
Slave1
TXD RXD
Slave 2
Select code
00000001 Select code 00001010