xr
REV. 1.2.1
UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART
XR17D158
5
RTS4#
86
O
UART channel 4 Request to Send or general purpose output (active low).
CTS4#
82
I
UART channel 4 Clear to Send or general purpose input (active low).
DTR4#
87
O
UART channel 4 Data Terminal Ready or general purpose output (active low).
DSR4#
83
I
UART channel 4 Data Set Ready or general purpose input (active low).
CD4#
84
I
UART channel 4
Carrier Detect or general purpose input (active low).
RI4#
85
I
UART channel 4 Ring Indicator or general purpose input
(active low).
TX5
80
O
UART channel 5 Transmit Data or infrared transmit data. Normal TXD output
idles HIGH while infrared TXD output idles LOW.
RX5
71
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].
RTS5#
78
O
UART channel 5 Request to Send or general purpose output (active low).
CTS5#
72
I
UART channel 5 Clear to Send or general purpose input (active low).
DTR5#
79
O
UART channel 5 Data Terminal Ready or general purpose output (active low).
DSR5#
75
I
UART channel 5 Data Set Ready or general purpose input (active low).
CD5#
76
I
UART channel 5
Carrier Detect or general purpose input (active low).
RI5#
77
I
UART channel 5 Ring Indicator or general purpose
input (active low).
TX6
62
O
UART channel 6 Transmit Data or infrared transmit data. Normal TXD output
idles HIGH while infrared TXD output idles LOW.
RX6
55
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].
RTS6#
60
O
UART channel 6 Request to Send or general purpose output (active low).
CTS6#
56
I
UART channel 6 Clear to Send or general purpose input (active low).
DTR6#
61
O
UART channel 6 Data Terminal Ready or general purpose output (active low).
DSR6#
57
I
UART channel 6 Data Set Ready or general purpose input (active low).
CD6#
58
I
UART channel 6 Carrier Detect or general purpose input (active low).
RI6#
59
I
UART channel 6 Ring Indicator or general purpose input (active low).
TX7
54
O
UART channel 7 Transmit Data or infrared transmit data. Normal TXD output
idles HIGH while infrared TXD output idles LOW.
RX7
47
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].
RTS7#
52
O
UART channel 7 Request to Send or general purpose output (active low).
CTS7#
48
I
UART channel 7 Clear to Send or general purpose input (active low).
DTR7#
53
O
UART channel 7 Data Terminal Ready or general purpose output (active low).
DSR7#
49
I
UART channel 7 Data Set Ready or general purpose input (active low).
PIN DESCRIPTIONS
N
AME
P
IN
#
T
YPE
D
ESCRIPTION