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XR17V258IV Datasheet(PDF) 6 Page - Exar Corporation |
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XR17V258IV Datasheet(HTML) 6 Page - Exar Corporation |
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6 / 70 page  XR17V258 xr 66MHZ PCI BUS OCTAL UART WITH POWER MANAGEMENT SUPPORT REV. 1.0.0 6 RX7 47 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]. 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). CD7# 50 I UART channel 7 Carrier Detect or general purpose input (active LOW). RI7# 51 I UART channel 7 Ring Indicator or general purpose input (active LOW). ANCILLARY SIGNALS MPIO0 108 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 MPIO1 107 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. MPIO2 74 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. MPIO3 73 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. MPIO4 68 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. MPIO5 67 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. MPIO6 66 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. MPIO7 65 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. EECK 116 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. EECS 115 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. EEDI 114 O Write data to EEPROM device. It is manually accessible thru the Configura- tion Register REGB. EEDO 113 I Read data from EEPROM device. It is manually accessible thru the Configu- ration Register REGB. XTAL1 110 I Crystal or external clock input. XTAL2 109 O Crystal or buffered clock output. PIN DESCRIPTIONS NAME PIN #TYPE DESCRIPTION |
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