XR17L154 Datasheet, PDF (4/56 Pages) Exar Corporation – 3.3V PCI BUS QUAD UART

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DISCONTINUED
PIN DESCRIPTIONS
NAME
RX1
PIN #
99
RTS1#
104
CTS1#
100
DTR1#
105
DSR1#
101
CD1#
102
RI1#
103
TX2
88
RX2
81
RTS2#
86
CTS2#
82
DTR2#
87
DSR2#
83
CD2#
84
RI2#
85
TX3
62
RX3
55
RTS3#
60
CTS3#
56
DTR3#
61
DSR3#
57
CD3#
58
RI3#
59
ANCILLARY SIGNALS
MPIO0
108
MPIO1
107
MPIO2
74
XR17L154
3.3V PCI BUS QUAD UART
REV. 1.1.0
TYPE
DESCRIPTION
I UART channel 1 Receive Data or infrared receive data. Normal RXD input
idles at logic 1 condition. The infrared pulses can be inverted internally prior
the decoder by FCTR[4].
O UART channel 1 Request to Send or general purpose output (active low).
I UART channel 1 Clear to Send or general purpose input (active low).
O UART channel 1 Data Terminal Ready or general purpose output (active low).
I UART channel 1 Data Set Ready or general purpose input (active low).
I UART channel 1 Carrier Detect or general purpose input (active low).
I UART channel 1 Ring Indicator or general purpose input (active low).
O UART channel 2 Transmit Data or infrared transmit data.
I UART channel 2 Receive Data or infrared receive data. Normal RXD input
idles at logic 1 condition. The infrared pulses can be inverted internally prior
the decoder by FCTR[4].
O UART channel 2 Request to Send or general purpose output (active low).
I UART channel 2 Clear to Send or general purpose input (active low).
O UART channel 2 Data Terminal Ready or general purpose output (active low).
I UART channel 2 Data Set Ready or general purpose input (active low).
I UART channel 2 Carrier Detect or general purpose input (active low).
I UART channel 2 Ring Indicator or general purpose input (active low).
O UART channel 3 Transmit Data or infrared transmit data.
I UART channel 3 Receive Data or infrared receive data. Normal RXD input
idles at logic 1 condition. The infrared pulses can be inverted internally prior
the decoder by FCTR[4].
O UART channel 3 Request to Send or general purpose output (active low).
I UART channel 3 Clear to Send or general purpose input (active low).d.
O UART channel 3 Data Terminal Ready or general purpose output (active low).
I UART channel 3 Data Set Ready or general purpose input (active low).
I UART channel 3 Carrier Detect or general purpose input (active low).
I UART channel 3 Ring Indicator or general purpose input (active low).
I/O Multi-purpose input/output 0. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT
I/O Multi-purpose input/output 1. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
I/O Multi-purpose input/output 2. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
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