XR17V258_08 Datasheet, PDF (6/70 Pages) Exar Corporation – 66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT

XR17V258
66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT
PIN DESCRIPTIONS
REV. 1.0.1
NAME
RX7
PIN #
47
RTS7#
52
CTS7#
48
DTR7#
53
DSR7#
49
CD7#
50
RI7#
51
ANCILLARY SIGNALS
MPIO0
108
MPIO1
107
MPIO2
74
MPIO3
73
MPIO4
68
MPIO5
67
MPIO6
66
MPIO7
65
EECK
116
EECS
115
EEDI
114
EEDO
113
XTAL1
110
XTAL2
109
TYPE
DESCRIPTION
I UART channel 7 Receive Data or infrared receive data. Normal RXD input
idles at HIGH condition. The infrared pulses can be inverted prior to decoding
by setting FCTR bit [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).
I UART channel 7 Carrier Detect or general purpose input (active LOW).
I UART channel 7 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.
I/O Multi-purpose input/output 3. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
I/O Multi-purpose input/output 4. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
I/O Multi-purpose input/output 5. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
I/O Multi-purpose input/output 6. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
I/O Multi-purpose input/output 7. The function of this pin is defined thru the Con-
figuration Register MPIOSEL, MPIOLVL, MPIOINV, MPIO3T and MPIOINT.
O Serial clock to EEPROM. An internal clock of CLK divide by 256 is used for
reading the vendor and sub-vendor ID during power up or reset. However, it
can be manually clocked thru the Configuration Register REGB.
O Chip select to a EEPROM device like 93C46. It is manually selectable thru
the Configuration Register REGB. Requires a pull-up 4.7K ohm resistor for
external sensing of EEPROM during power up. See DAN112 for further
details.
O Write data to EEPROM device. It is manually accessible thru the Configura-
tion Register REGB.
I Read data from EEPROM device. It is manually accessible thru the Configu-
ration Register REGB.
I Crystal or external clock input.
O Crystal or buffered clock output.
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