Serial interfaces, Set the sc0ten bit to 1 to enable transmission – Lucent Technologies MN10285K User Manual
Page 133
Serial Interfaces
Serial Interface Setup Examples
Panasonic Semiconductor Development Company
MN102H75K/F75K/85K/F85K LSI User Manual
132
Panasonic
■
To set up serial interface 0:
1.
Configure the transmission settings in the serial port 0 control register
(SC0CTR). Since the transfer clock is timer 0 divided by 8, select timer 0
underflow x 1/8 as the serial port 0 clock source. Select UART mode, odd
parity, 2-bit stop bit, 8-bit data length, and LSB-first output. Also set the
SC0REN and SC0TEN flags to 0, disabling transmission and reception.
SC0CTR (example)
x’00FD80’
2.
Set the SC0TEN bit to 1 to enable transmission.
■
To enable serial 0 transmission end interrupts:
Cancel all existing interrupt requests. Next, set the interrupt priority level of 5 in
the ANLV[2:0] bits of the ANICH register, set the SCT0IE bit of SCT0ICH to 1,
and set the SCT0IR bit of SCT0ICL to 0. From this point on, an interrupt request
is generated whenever a serial data transmission ends.
ANICH: (example)
x’00FC81’
SCT0ICL (example)
x’00FC82’
SCT0ICH (example)
x’00FC83’
Bit:
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
SC0
TEN
SC0
REN
SC0
BRE
SC0
I2CS
SC0
PTL
—
SC0
OD
SC0
I2CM
SC0
LN
SC0
PTY2
SC0
PTY1
SC0
PTY0
SC0
SB
—
SC0
S1
SC0
S0
Setting:
0
0
0
0
0
0
0
0
1
1
1
1
1
0
0
1
Bit:
7
6
5
4
3
2
1
0
—
ANLV2
ANLV1
ANLV0
—
—
—
ANIE
Setting:
0
1
0
1
0
0
0
0
Bit:
7
6
5
4
3
2
1
0
—
—
—
SCT0
IR
—
—
—
SCT0
ID
Setting:
0
0
0
0
0
0
0
0
Bit:
7
6
5
4
3
2
1
0
—
—
—
—
—
—
—
SCT0
IE
Setting:
0
0
0
0
0
0
0
1