F81867 Datasheet, PDF (26/315 Pages) Feature Integration Technology Inc. – 6 UARTs μSuper IO With 128 Bytes FIFO and Power Saving Functions

F81867
5.9 UART, SIR
Pin
Pin Name
1
DCD2#
2
RI2#
3
CTS2#
DTR2#
Type
IN_st,5v
IN_st,5v
IN_st,5v
O₈
PWR
3VCC
Description
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
I_VSB3V ring signal is being received from the modem or data
set. Support wake up function.
3VCC ^{Clear To Send is the modem control input.}
UART Data Terminal Ready. An active low signal
informs the modem or data set that controller is ready
to communicate.
Power on Strapping pin for over voltage protection
4
3VCC ^(OVP).
OVP_Mode
IN_{t,u47, 5v}
1: Default is disabled; internal pull high 47k Ω .
Voltage protection function is enabled via setting the
related registers.
RTS2#
5
0: Enable OVP function.
UART Request To Send. An active low signal informs
O₈
the modem or data set that the controller is ready to
send data.
3VCC _{Power on Strapping pin}
KBC_EN_TRAP
IN_{t,u47, 5v}
1: KBC enable (Default, internal pull high 47k Ω ).
0: KBC disable.
Data Set Ready. An active low signal indicates the
6
DSR2#
IN_st,5v
3VCC modem or data set is ready to establish a
communication link and transfer data to the UART.
7
SOUT2
UART Serial Output. Used to transmit serial data out
O₈
3VCC
to the communication link.
UART Serial Input. Used to receive serial data
8
SIN2
IN_st,5v
3VCC _{through the communication link.}
DCD3#
36
IN_st,5v
Data Carrier Detect. An active low signal indicates the
3VCC ^{modem or data set has detected a data carrier.}
GPIO30
I/OOD_{8st, 5v}
General Purpose IO.
Ring Indicator. An active low signal indicates that a
RI3#
37
IN_st,,5v
ring signal is being received from the modem or data
3VCC _set.
GPIO31
I/OOD_{8st, 5v}
General Purpose IO.
CTS3#
38
IN_st,5v
Clear To Send is the modem control input.
3VCC
GPIO32
I/OOD_{8st, 5v}
General Purpose IO.
UART Data Terminal Ready. An active low signal
DTR3#
39
O₈
informs the modem or data set that controller is ready
3VCC
to communicate.
GPIO33
I/OOD_{8st, 5v}
General Purpose IO.
26
Dec, 2011
V0.12P