F81216
4.2 UART Interface
Pin No. Pin Name
Type
INt5V
INt5V
Description
13
14
CTS4#
DSR4#
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.
15
16
RTS4#
DTR4#
I/O8t5V-d100
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.
I/O8t5V-d100
17
18
SIN4
INt5V
Serial Input.
Used to receive serial data through the
communication link.
SOUT4
I/O8t5V-d100
UART 4 Serial Output. Used to transmit serial data out to the
communication link.
PS_2E8_IRQD
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.
19
20
DCD4#
RI4#
INt5V
INt5V
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.
21
22
CTS3#
DSR3#
INt5V
INt5V
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.
23
24
RTS3#
I/O8t5V-d100
UART 3 Request To Send. An active low signal informs the
modem or data set that the controller is ready to send data.
PS_CONF_KE
Y0
Power on configuration setting pin. As for detail description,
please refer to register description.
DTR3#
I/O8t5V-d100
UART 3 Data Terminal Ready. An active low signal informs
the modem or data set that controller is ready to communicate.
PS_WDT
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-
August, 2007
V0.32P
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
