TMP93CS32F datasheet(132/180 Pages) TOSHIBA

132 / 180 page

TMP93CS32

2004-02-10

93CS32-130

* Clock condition

Clock gear: 1 (fc)

Prescaler clock: fFPH

Main setting

P6CR

← X X − − − − 0 −

Select P61 (RXD) as the input pin.

SC0MOD

← − 0 1 X 1 0 0 1

Enable receiving in 8-bit UART mode.

SC0CR

← X 0 1 X X X 0 0

Add an odd parity.

BR0CR

← 0 X 0 1 0 1 0 1

Set transfer rate at 9600 bps.

TRUN

← 1 X − − − − − −

Start the prescaler for the baud rate generator.

INTES0

← − − − − 1 1 0 0

Enable INTRX0 interrupt and set interrupt level 4.

Interrupt processing

Acc

← SC0CR AND 00011100

if Acc

≠ 0 then ERROR

Check for error.

Acc

← SC0BUF

Read the received data.

X: Don’t care,

−: No change

(4) Mode 3 (9-bit UART mode)

9-bit UART mode can be specified by setting SC0MOD<SM1:0> to “11”. In this mode,

parity bit cannot be added.

For transmission, the MSB (9th bit) is written in SC0MOD<TB8>, while in receiving

it is stored in SC0CR<RB8>. For writing and reading the buffer, the MSB is read or

written first then SC0BUF.

Wake-up function

In 9-bit UART mode, the wake-up function of slave controllers is enabled by

setting SC0MOD<WU> to “1”. The interrupt INTRX0 occurs only when <RB8>

= 1.

Note: TXD pin of the slave controllers must be in open-drain output mode.

Figure 3.9.21 Serial Link Using Wake-up Function

TXD

RXD

Master

TXD

RXD

Slave 1

TXD

RXD

Slave 2

TXD

RXD

Slave 3

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