TMP93CS44 datasheet(148/224 Pages) TOSHIBA

148 / 224 page

TMP93CS44/S45

2004-02-10

93CS44-146

Setting example: To link two slave controllers serially with the master controller, and

use the internal clock

φ1 as the transfer clock.

Since serial channels 0 and 1 operate in exactly the same way, channel 0 is used

for the purposes of explanation.

•

Setting the master controller

Main

P6CR

← − − − − − − 01

P6FC

← X X − X − − X1

Select P60 as TXD0 pin and P61 as RXD0 pin.

INTES0

← 1 1 0 0 1 1 0 1

Enable INTTX0 and set the interrupt level 4.

Enable INTRX0 and set the interrupt level 5.

SC0MOD

← 1 0 1 0 1 1 1 0

Set

φ1 as the transmission clock in 9-bit UART mode.

SC0BUF

← 0 0 0 0 0 0 0 1

Set the select code for slave controller 1.

INTTX0 interrupt

SC0MOD

← 0 − − − − − − −

Sets TB8 to “0”.

SC0BUF

← * * * * * * * *

Set data for transmission.

•

Setting the slave controller 2

Main

P6CR

← − − − − − − 01

P6FC

← X X − X − − X1

ODE

← X X X X − − − 1

Select P61 as RXD0 pin and P60 as TXD0 pin (Open-drain

output).

INTES0

← 1 1 0 1 1 1 1 0

Enable INTRX0 and INTTX0.

SC0MOD

← 0 0 1 1 1 1 1 0

Set <WU> to “1” in the 9-bit UART transmission mode with

transfer clock

φ1.

INTRX0 interrupt

ACC ← SC0BUF

if ACC = Select code

Then SC0MOD

← − − − 0 − − − −

Clear <WU> to “0”.

TXD

RXD

Master

TXD

RXD

Slave 1

TXD

RXD

Slave 2

Select code

00000001

Select code

00001010

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