Keith & Koep GmbH
Functional specification
MT6N (MT606)
16
von
49
Alternately you can use serial port 2 as an UART.
3.12.4
Serial port 3 - UART
Serial port 3 is configured as an universal asynchronous receiver / transmitter
(UART) serial controller. A Maxim MAX3243 RS232 transceiver is used to
manage the level conversion and line interface. The device has a power saving auto-
matic shutdown that powers down the chip if no valid RS232 levels are detected.
The component may also be forced off by the FORCEON signal. Serial port 3 is
accessible by the male serial port connector J12 (DSUB9M). This port provides
RTS, CTS, DSR, DTR and DCD modem signals to support a serial IO port PC syn-
chronous application.
3.12.5
Serial port 4 - SSP
The synchronous serial port (SSP) of the SA-1110 is used to interface to a variety of
analog-to-digital converters, audio and telecom codecs, memory chips, and keypad
controllers as well as other miscellaneous serial devices. The SSP supports the
National Microwire and Texas Instruments synchronous serial protocols as well as a
subset of the Motorola serial peripheral interface (SPI) protocol. Serial port 4 con-
trols full-duplex synchronous serial transfer between the SA-1110 and off-chip
devices. The SSP functions as a master only and communicates to the off-chip slave
device by driving a serial bit rate clock ranging from 7.2 KHz to 1.8432 MHz along
with a frame synchronisation pulse to denote the start of each frame transfer, and
supports any data format between 4 and 16 bits. The external pins dedicated to this
interface are GPIO 10 to 13.
TABLE 6.
IrDA Control Register
Offset 0x02400000
IrDA Control Register
Bit
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
?
?
?
?
?
?
?
?
?
?
?
?
?
?
0
1
Reserved
IRDA_
MODE
IRDA_SD
Bits
Name
Type
Description
0
IRDA_SD
Write Only
IrDA Shutdown
0 - IrDA activ
1 - IrDA inactiv
1
IRDA_
MODE
Write Only
IrDA Mode
0 - Low speed
1 - High speed
