TMP92CZ26A
92CZ26A-339
Setting example: To link two slave controllers serially with the master controller using the
internal clock f
IO
as the transfer clock.
• Setting the master controller
• Setting the slave controller
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 f
SYS
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
XX
−
01
P9FC
← − −
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 f
IO
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
