F81216AD Datasheet, PDF (7/43 Pages) Feature Integration Technology Inc. – LPC to 4 UART + 9-bit Protocol

4.2 UART Interface
F81216AD
Pin No. Pin Name
13
CTS4#
14
DSR4#
Type
IN_t5V
IN_t5V
15
RTS4#
16
DTR4#
I/O_8t5V-d100
I/O_8t5V-d100
17
SIN4
18
SOUT4
IN_t5V
I/O_8t5V-d100
PS_2E8_IRQD
19
DCD4#
20
RI4#
21
CTS3#
22
DSR3#
IN_t5V
IN_t5V
IN_t5V
IN_t5V
23
RTS3#
I/O_8t5V-d100
PS_CONF_KE
Y0
24
DTR3#
I/O_8t5V-d100
PS_WDT
Description
Clear To Send is the modem control input.
Data Set Ready. An active low signal indicates the modem or
data set is ready to establish a communication link and transfer
data to the UART.
UART 4 Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
UART 4 Data Terminal Ready. An active low signal informs
the modem or data set that controller is ready to communicate.
Serial Input. Used to receive serial data through the
communication link.
UART 4 Serial Output. Used to transmit serial data out to the
communication link.
Power setting pin to define the IRQD index.
Default PS_2E8_IRQD = 0, IRQF index is programmed by
register.
If PS_2E8_IRQD = 1, setting IRQF index to 0x2E8.
Data Carrier Detect. An active low signal indicates the
modem or data set has detected a data carrier.
Ring Indicator. An active low signal indicates that a ring
signal is being received from the modem or data set.
Clear To Send is the modem control input.
Data Set Ready. An active low signal indicates the modem or
data set is ready to establish a communication link and transfer
data to the UART.
UART 3 Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
Power on configuration setting pin. As for detail description,
please refer to register description.
UART 3 Data Terminal Ready. An active low signal informs
the modem or data set that controller is ready to communicate.
Power on setting pin to enable the watch dog timer.
Default PS_WDT=0, WDT time programmed by register.
When PS_WDT=1, WDT time is defined as 10 sec.
-4-
July, 2008
V0.20P