XR17D158 Datasheet, PDF (5/72 Pages) Exar Corporation – UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART

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REV. 1.2.1
PIN DESCRIPTIONS
NAME
RTS4#
CTS4#
DTR4#
DSR4#
CD4#
PIN #
86
82
87
83
84
RI4#
85
TX5
80
RX5
71
RTS5#
78
CTS5#
72
DTR5#
79
DSR5#
75
CD5#
76
RI5#
77
TX6
62
RX6
55
RTS6#
60
CTS6#
56
DTR6#
61
DSR6#
57
CD6#
58
RI6#
59
TX7
54
RX7
47
RTS7#
52
CTS7#
48
DTR7#
53
DSR7#
49
XR17D158
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
TYPE
DESCRIPTION
O UART channel 4 Request to Send or general purpose output (active low).
I UART channel 4 Clear to Send or general purpose input (active low).
O UART channel 4 Data Terminal Ready or general purpose output (active low).
I UART channel 4 Data Set Ready or general purpose input (active low).
I UART channel 4 Carrier Detect or general purpose input (active low).
I UART channel 4 Ring Indicator or general purpose input (active low).
O ^{UART channel 5 Transmit Data or infrared transmit data. Normal TXD output}
idles HIGH while infrared TXD output idles LOW.
I ^{UART channel 5 Receive Data or infrared receive data. Normal RXD input}
idles HIGH. The infrared pulses typically idle LOW but can be inverted inter-
nally prior the decoder by FCTR[4].
O UART channel 5 Request to Send or general purpose output (active low).
I UART channel 5 Clear to Send or general purpose input (active low).
O UART channel 5 Data Terminal Ready or general purpose output (active low).
I UART channel 5 Data Set Ready or general purpose input (active low).
I UART channel 5 Carrier Detect or general purpose input (active low).
I UART channel 5 Ring Indicator or general purpose input (active low).
O ^{UART channel 6 Transmit Data or infrared transmit data. Normal TXD output}
idles HIGH while infrared TXD output idles LOW.
I ^{UART channel 6 Receive Data or infrared receive data. Normal RXD input}
idles HIGH. The infrared pulses typically idle LOW but can be inverted inter-
nally prior the decoder by FCTR[4].
O UART channel 6 Request to Send or general purpose output (active low).
I UART channel 6 Clear to Send or general purpose input (active low).
O UART channel 6 Data Terminal Ready or general purpose output (active low).
I UART channel 6 Data Set Ready or general purpose input (active low).
I UART channel 6 Carrier Detect or general purpose input (active low).
I UART channel 6 Ring Indicator or general purpose input (active low).
O ^{UART channel 7 Transmit Data or infrared transmit data. Normal TXD output}
idles HIGH while infrared TXD output idles LOW.
I ^{UART channel 7 Receive Data or infrared receive data. Normal RXD input}
idles HIGH. The infrared pulses typically idle LOW but can be inverted inter-
nally prior the decoder by FCTR[4].
O UART channel 7 Request to Send or general purpose output (active low).
I UART channel 7 Clear to Send or general purpose input (active low).
O UART channel 7 Data Terminal Ready or general purpose output (active low).
I UART channel 7 Data Set Ready or general purpose input (active low).
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