TMP93CS41 datasheet(193/248 Pages) TOSHIBA

193 / 248 page

TMP93CS40/TMP93CS41

2004-02-10

93CS40-191

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

7-bit mode can be selected by setting the serial channel mode register

SC0MOD<SM1:0> to 01.

In this mode, a parity bit can be added. The parity bit is enabled or disabled by serial

channel control register SC0CR<PE>. Even parity or odd parity is selected using

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. Channel 0 is explained

here.

Clock configuration

System clock:

High frequency (fc)

Clock gear:

1 (fc)

Prescaler clock:

System clock

P9CR

← X X − − − − − 1

P9FC

← X X − X − XX 1

Select P90 as the TXD0 pin.

SC0MOD

← X 0 − X 0 1 0 1

Set 7-bit UART mode.

SC0CR

← X 1 1 X X X 0 0

Set 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 selected by setting SC0MOD<SM1:0> to 10. In this mode, a

parity bit can be added. The parity bit is enabled or disabled by SC0CR<PE>. Even

parity or odd parity is selected by using SC0CR<EVEN> when <PE> is set to 10

(Enable).

Setting example: When receiving data with the following format, the control registers

should be set as described below.

Clock configuration

System clock:

High frequency (fc)

Clock gear:

1 (fc)

Prescaler clock:

System clock

Even

parity

Stop

Bit0

Start

Direction of transmission (Transmission rate: 2400 bps at fc

= 12.288 MHz)

Bit0

Start

Odd

parity

Stop

Direction of transmission (Transmission rate: 9600 bps at fc

= 12.288 MHz)

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