W83627DHG
Publication Release Date: Aug, 22, 2007
-13- Version
1.4
Serial Port & Infrared Port Interface , continued.
SYMBOL PIN I/O
DESCRIPTION
CTSA# IN
t
Clear To Send. This is the modem-control input. The function of
these pins can be tested by reading bit 4 of the handshake status
register.
GP67
49
I/OD
12t
General-purpose I/O port 6 bit 7.
RIB# IN
t
Ring Indicator. An active-low signal indicates that a ring signal is
being received from the modem or the data set.
GP40*
85
I/OD
12t
General-purpose I/O port 4 bit 0.
DCDB# IN
t
Data Carrier Detection. An active-low signal indicates the modem
or data set has detected a data carrier.
GP41***
84
I/OD
12t
General-purpose I/O port 4 bit 1.
FAN_SET2 IN
t
Determines the initial FAN speed. Power-on configuration for 2
fan speeds, 50% or 100%. When VCC is on, this pin needs a
pulled-up or a pulled-down resistor to decide whether the fan
speed is 50% or 100%. Only CPUFANOUT1 is supported.
SOUTB
UART B Serial Output. This pin is used to transmit serial data out
to the communication link.
IRTX
O
12
IR Transmitter output.
GP42*
83
I/O
12t
General-purpose I/O port 4 bit 2.
Note: This pin changes to input state during internal PWROK from
low to high, then goes back to the previous setting state. (Please
see the AP Note 1 of W83627DHG)
SINB
Serial Input. This pin is used to receive serial data through the
communication link.
IRRX
IN
t
IR Receiver input.
GP43***
82
I/OD
12t
General-purpose I/O port 4 bit 3.
DTRB# O
12
UART B Data Terminal Ready. An active-low signal informs the
modem or data set that the controller is ready to communicate.
GP44*
81
I/OD
12t
General-purpose I/O port 4 bit 4.
RTSB# O
12
UART B Request To Send. An active-low signal informs the
modem or data set that the controller is ready to send data.
GP45***
80
I/OD
12t
General-purpose I/O port 4 bit 5.
DSRB# IN
t
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.
GP46*
79
I/OD
12t
General-purpose I/O port 4 bit 6.
CTSB# IN
t
Clear To Send. This is the modem-control input. The function of
these pins can be tested by reading bit 4 of the handshake status
register.
GP47***
78
I/OD
12t
General-purpose I/O port 4 bit 7.
Note:
Regarding the * sign, please see 5.11.8 GPIO-4 for detailed WDTO# / SUSLED multi-function information.
Summary of Contents for W83627DHG
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