Product specifications

VT1211 LPC SuperIO and Hardware Monitor
Revision 1.0 January 8, 2002 -9- Pinouts
Technologies, Inc.
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Serial Port 2
Signal Name Pin # Type Description
CTS2#
/VID4
/GP77
55 I
I
IO
Clear To Send. The default function of this pin is Clear To Send. Low indicates that the
modem is ready to accept data. The CTS signal is a modem status input whose condition can
be tested by reading the MSR register.
DSR2#
/VID3
/GP76
56 I
I
IO
Data Set Ready. The default function of this pin is Data Set Ready. Low indicates that the
modem (“Data Set”) is ready to establish a communications link. The DSR signal is a
modem status input whose condition can be tested by reading the MSR register.
RTS2#
/VID2
/GP75
57 O
O
IO
Request To Send. The default function of this pin is Request To Send. Low indicates to the
modem that the device is ready to send data. RTS is activated by setting the appropriate bit
in the register of MCR to 1. After a Master Reset operation or during Loop mode, RTS is set
to its inactive state.
DTR2#
/VID1
/GP74
58 O
I
IO
Data Terminal Ready 2. The default function of this pin is Data Terminal Ready. DTR is
used to indicate to the modem that the device is ready to exchange data. DTR is activated by
setting the appropriate bit in the register of MCR to 1. After a Master Reset operation or
during Loop mode, DTR is set to its inactive state.
SIN2#
/VID0
/GP73
59 I
I
IO
Serial Data In. The default function of this pin is Serial Data In. This input receives serial
data from the communications link.
SOUT2#
/ SMBCK
/GP72
61 O
IO
IO
Serial Data Out. The default function of this pin is Serial Data Out. This output sends serial
data to the communications link. This signal is set to a marking state (logic 1) after a Master
Reset operation or when the device is in one of the Infrared communications modes.
DCD2#
/SMBDT
/GP71
62 I
IO
IO
Data Carrier Detect. The default function of this pin is Data Carrier Detect. Low indicates
that the modem has detected a carrier. DCD is a modem status input whose condition can be
tested by reading the MSR.
RI2#
/GP70
/ITMOFF
/SCLK
63 I
IO
Ring Indicator. The default function of this pin is Ring Indicator. Low indicates that a
telephone ring signal has been received by the modem. The RI signal is a modem status
input whose condition can be tested by reading the MSR register.
Infrared (IR) Controller
Signal Name Pin # Type Description
IRTX
65 O
Infrared Data Transmit. Infrared Data Transmit.
IRRX
64 IO
Infrared Data Receive. Infrared Data Receive for SIR or FIR.
IRRX1
/GP24
100 I
Infrared Data Receive 1. The default function of this pin is Infrared Data Receive for SIR
or transceiver mode control. The function of this pin decided by the GPIO configuration
register.
ITMOFF
/SCLK
/GP70
/RI2#
63 IO
Infrared Transceiver Module Off. IR Transceiver Module On / Off control
SCLK
/ITMOFF
/GP70
/RI2#
63 IO
IR Transceiver Serial Clock. For devices that meet specification 1.0 “Serial Interface of
Transceiver Control”