Toshiba H1 SERIES TLCS-900 User Manual
Page 170
TMP92CM22
2007-02-16
92CM22-168
Example: To link two slave controllers serially with the master controller using the system
clock f
IO
as the transfer clock.
• Master controller setting
Main routine
PFCR
← − − − − − − 0 1
PFFC
← − − − − − − X 1
Set PF0 to TXD0, and set PF1 to RXD0 pin.
INTES0
← 1 1 0 0 1 1 0 1
Set INTTX0 to enable, and set interrupt level to level 4.
Set INTRX0 to enable, and set interrupt level to level 5.
SC0MOD0
← 1 0 1 0 1 1 1 0
Set to 9-bit UART mode, and set transfer clock to f
IO.
SC0BUF
← 0 0 0 0 0 0 0 1
Set
select
code
of
slave
1.
Interrupt routine (INTTX0)
SC0MOD0
← 0 − − − − − − −
Set TB8 to “0”.
SC0BUF
← ∗ ∗ ∗ ∗ ∗ ∗ ∗ ∗ Set
transmission
data.
• Slave setting
Main routine
PFCR
← − − − − − − 0 0
PFFC
← − − − − − − X 1
Set PF0 to TXD (open-drain output), and PC1 to RXD.
INTES0
← 1 1 0 1 1 1 1 0
Set INTTX0 and INTRX0 to enable.
SC0MOD0
← 0 0 1 1 1 1 1 0
Set to <WU>
= “1” in 9-bit UART mode transfer clock f
IO.
Interrupt routine (INTRX0)
Acc
← SC0BUF
if Acc
= Select code
Then
SC0MOD0
← − − − 0 − − − −
Clear to <WU>
= “0”.
TXD
RXD
Master
TXD
RXD
Slave 1
TXD
RXD
Slave 2
Select code
00000001
Select code
00001010