F81866A Datasheet, PDF (25/210 Pages) Feature Integration Technology Inc. – 6 UARTs Super IO With 128 Bytes FIFO and Power

F81866A
S5# input. This pin companies with S3# to indicate
S5#
87
IN_st,5v
the operating state from S0 to S3 and S4/S5 sleep
I_VSB3V _states.
GPIO67
I/OD_12st,5v
General purpose IO.
5.9 UART, GPIO
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.
I_VSB3V
3VCC
Ring Indicator. An active low signal indicates that a
ring signal is being received from the modem or data
set. Support wake up function.
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.
25
Jan, 2012
V0. 12P