TMP93CS44 datasheet(145/224 Pages) TOSHIBA

145 / 224 page

TMP93CS44/S45

2004-02-10

93CS44-143

(2) Mode 1 (7-bit UART mode)

7-bit UART mode can be set by setting serial channel mode register

SC0MOD<SM1:0> to 01.

In this mode, a parity bit can be added, and the addition of a parity bit can be

enabled or disabled by serial channel control register SC0CR<PE>, and even parity or

odd parity is selected by SC0CR <EVEN> when <PE> is set to 1 (Enable).

Setting example: When transmitting data with the following format, the control registers should be set as described

below.

* Clock condition

System clock:

High frequency (fs)

Clock gear:

1 (fc)

Prescaler clock: fFPH

P6CR

← − − − − − − − 1

P6FC

← X X − X − − X1

Select P60 as the TXD pin.

SC0MOD

← X 0 − X 0 1 0 1

Set 7-bit UART mode.

SC0CR

← X 1 1 X X X 0 0

Add an even parity.

BR0CR

← 0 X 1 0 0 1 0 1

Set transfer rate at 2400 bps.

TRUN

← 1 X − − − − − −

Start the prescaler for the baud rate generator.

INTES0

← 1 1 0 0 − − − −

Enable INTTX0 interrupt and set interrupt level 4.

SC0BUF

← * * * * * * * *

Set data for transmission.

X: Don’t care,

−: No change

(3) Mode 2 (8-bit UART mode)

8-bit UART mode can be specified by setting SC0MOD<SM1:0> to 10. In this mode,

parity bit can be added, the addition of a parity bit is enabled or disabled by

SC0CR<PE>, and even parity or odd parity is selected by SC0CR<EVEN> when <PE>

is set to 1 (Enable).

Setting example: When receiving data with the following format, the control register should be set as described below.

* Clock condition

System clock:

High frequency (fs)

Clock gear:

1 (fc)

Prescaler clock: fFPH

Start

Bit 0

Even

parity

Stop

Direction of transmission (Transmission rate: 2400 bps at fc

= 12.288 MHz)

Start

Bit0

345

Direction of transmission (Transmission rate: 9600 bps at fc

= 12.288 MHz)

Odd

parity

Stop

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