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Part Number: PC87308VUL
Description: The PC87308VUL is a single chip solution to the most commonly used ISA, EISA and Micro Channel periphe...
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PC87308VUL
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General Description
PC87308VUL General Description
The PC87308VUL is a single chip solution to the most commonly used ISA, EISA and Micro Channel peripherals. It incorporates in one fully Plug and Play (PnP) compatible chip, a Floppy Disk Controller (FDC), a Keyboard and mouse Controller (KBC), a Real-Time Clock (RTC), two full function UARTs, Universal Infrared (UIR) support, a full IEEE 1284 parallel port, three general purpose chip select signals that can be programmed for game port control, and a separate configuration register set for each module. It also provides support for power management and standard ATÉ address decoding for on-chip functions.
The PC87308VUL's Plug and Play (PnP) support conforms with the ``Plug and Play ISA Specification'' Version 1.0a, May 5, 1994.
The Universal Infrared (UIR) interface complies with the HPSIR, SHARP-IR and IrDA-2 standards and supports all four basic protocols for TV remote circuitry (RC-5, RC-5 extended, RECS80 and NEC).
PC87308VUL Features
· 100% compatibilit· with Plug and Pla· requirements specified in the ``Plug and Pla· ISA Specification'', ISA, EISA, and Micro Channel architectures.
· A special Plug and Pla· module that includes;
· Flexible IRQs, DMAs and base addresses that meet the Plug and Pla· requirements of Microsoft's 1995 hardware design guide for Windows and Plug and Pla· ISA Revision 1.0A.
· Plug and Pla· ISA mode (with isolation mechanism· Wait for Ke· state)
· Motherboard Plug and Pla· mode
· A Flopp· Disk Controller (FDC) that provides:
· A modifiable address that is referenced b· a 16-bit programmable register
· Software compatibilit· with the PC8477, which contains a superset of the flopp· disk controller functions in the mDP8473, the NEC mPD765A and the N82077
· 13 IRQ channel options
· Four 8-bit DMA channel options
· 16-b·te FIFO
· Burst and non-burst modes
· A high-performance, internal, analog data separator that does not require an· external filter components
· Support or standard 5.25× and 3.5× flopp· disk drives
· Automatic media sense support
· Perpendicular recording drive support
· 3-mode Flopp· Disk Drive (FDD) support
· Full support for IBM'sÉ Tape Drive Register (TDR) implementation of PC-ATÉ and PS/2É drive t·pes
· A Ke·board and Mouse Controller (KBC) with:
· A modifiable address that is referenced b· a 16-bit programmable register, reported as a fixed address in resource data
· 13 IRQ options for the ke·board controller
· 13 IRQ options for the mouse controller
· An 8-bit microcontroller
· Software compatibilit· with the 8042AH and PC87911 microcontrollers
· 2 KB of custom-design program ROM
· 256 b·tes of RAM for data
· 5 programmable dedicated open drain I/O lines for ke·board controller applications
· As·nchronous access to two data registers and one status register during normal operation
· Support for both interrupt and polling
· 93 instructions
· An 8-bit timer/counter
· Support for binar· and BCD arithmetic
· Operation at 8 MHz, 12 MHz or 16 MHz (programmable option)
· Customizabilit· using the PC87323VUL, which includes a RAM KBC, as a development platform for ke·board controller code for the PC87308VUL
· A Real-Time Clock (RTC) that has:
· A modifiable address that is referenced b· a 16-bit programmable register
· 13 IRQ options with programmable polarit·
· DS1287, MC146818 and PC87911 compatibility
· 242 bytes of battery backed up CMOS RAM in two banks
· Selective lock mechanism for the RTC RAM
· Battery backup up Century calendar in days, days of the week, months and years, with automatic leapyear adjustment
· Battery backed-up time of day in seconds, minutes and hours that allows a 12 or 24 hour format and adjustments for daylight savings time
· BCD or binary format for time keeping
· Three different maskable interrupt flags:
· Periodic interrupts·At intervals from 122 ms to 500 ms
· Time-of-day alarm·At intervals from once per second to once per day
· Updated Ended Interrupt·Once per second upon completion of update
· Separate battery pin, 2.4V operation that includes an internal UL protection resistor
· 2 mA maximum power consumption during power down
· Double-buffer time registers
· An Advanced Power supply Control (APC) that controls the main power supply to the system, using open-drain output, as follows: Power turned on when:
· The RTC reaches a pre-determined date and time.
· A high to low transition occurs on the RI input signals of the UARTs.
· A ring pulse or pulse train is detected on the RING input signal.
· A SWITCH input signal indicates a Switch On event. Power turned off when:
· A SWITCH input signal indicates a Switch Off event.
· A Fail-safe event occurs (power-save mode detected but the system is hung up).
· Software turns power off.
· Two UARTs that provide:
· Software compatibility with the PC16550A and the PC16450
· A modifiable address that is referenced by a 16-bit programmable register
· 13 IRQ channel options
· Shadow register support for write-only bits
· Four 8-bit DMA options for UART2 Y A Universal Infrared (UIR) interface on UART2 that supports TV remote circuitry and is compliant with:
· IrDA-2, including support for 4 Mbps and 1.15 Mbps baud rates
· HP-SIR
· ASK-IR option of SHARP-IR
· DASK-IR option of SHARP-IR
· Consumer remote control (TV Remote) mode
· A special Plug and Pla· module that includes;
· Flexible IRQs, DMAs and base addresses that meet the Plug and Pla· requirements of Microsoft's 1995 hardware design guide for Windows and Plug and Pla· ISA Revision 1.0A.
· Plug and Pla· ISA mode (with isolation mechanism· Wait for Ke· state)
· Motherboard Plug and Pla· mode
· A Flopp· Disk Controller (FDC) that provides:
· A modifiable address that is referenced b· a 16-bit programmable register
· Software compatibilit· with the PC8477, which contains a superset of the flopp· disk controller functions in the mDP8473, the NEC mPD765A and the N82077
· 13 IRQ channel options
· Four 8-bit DMA channel options
· 16-b·te FIFO
· Burst and non-burst modes
· A high-performance, internal, analog data separator that does not require an· external filter components
· Support or standard 5.25× and 3.5× flopp· disk drives
· Automatic media sense support
· Perpendicular recording drive support
· 3-mode Flopp· Disk Drive (FDD) support
· Full support for IBM'sÉ Tape Drive Register (TDR) implementation of PC-ATÉ and PS/2É drive t·pes
· A Ke·board and Mouse Controller (KBC) with:
· A modifiable address that is referenced b· a 16-bit programmable register, reported as a fixed address in resource data
· 13 IRQ options for the ke·board controller
· 13 IRQ options for the mouse controller
· An 8-bit microcontroller
· Software compatibilit· with the 8042AH and PC87911 microcontrollers
· 2 KB of custom-design program ROM
· 256 b·tes of RAM for data
· 5 programmable dedicated open drain I/O lines for ke·board controller applications
· As·nchronous access to two data registers and one status register during normal operation
· Support for both interrupt and polling
· 93 instructions
· An 8-bit timer/counter
· Support for binar· and BCD arithmetic
· Operation at 8 MHz, 12 MHz or 16 MHz (programmable option)
· Customizabilit· using the PC87323VUL, which includes a RAM KBC, as a development platform for ke·board controller code for the PC87308VUL
· A Real-Time Clock (RTC) that has:
· A modifiable address that is referenced b· a 16-bit programmable register
· 13 IRQ options with programmable polarit·
· DS1287, MC146818 and PC87911 compatibility
· 242 bytes of battery backed up CMOS RAM in two banks
· Selective lock mechanism for the RTC RAM
· Battery backup up Century calendar in days, days of the week, months and years, with automatic leapyear adjustment
· Battery backed-up time of day in seconds, minutes and hours that allows a 12 or 24 hour format and adjustments for daylight savings time
· BCD or binary format for time keeping
· Three different maskable interrupt flags:
· Periodic interrupts·At intervals from 122 ms to 500 ms
· Time-of-day alarm·At intervals from once per second to once per day
· Updated Ended Interrupt·Once per second upon completion of update
· Separate battery pin, 2.4V operation that includes an internal UL protection resistor
· 2 mA maximum power consumption during power down
· Double-buffer time registers
· An Advanced Power supply Control (APC) that controls the main power supply to the system, using open-drain output, as follows: Power turned on when:
· The RTC reaches a pre-determined date and time.
· A high to low transition occurs on the RI input signals of the UARTs.
· A ring pulse or pulse train is detected on the RING input signal.
· A SWITCH input signal indicates a Switch On event. Power turned off when:
· A SWITCH input signal indicates a Switch Off event.
· A Fail-safe event occurs (power-save mode detected but the system is hung up).
· Software turns power off.
· Two UARTs that provide:
· Software compatibility with the PC16550A and the PC16450
· A modifiable address that is referenced by a 16-bit programmable register
· 13 IRQ channel options
· Shadow register support for write-only bits
· Four 8-bit DMA options for UART2 Y A Universal Infrared (UIR) interface on UART2 that supports TV remote circuitry and is compliant with:
· IrDA-2, including support for 4 Mbps and 1.15 Mbps baud rates
· HP-SIR
· ASK-IR option of SHARP-IR
· DASK-IR option of SHARP-IR
· Consumer remote control (TV Remote) mode
PC87308VUL Connection Diagram
PC87308VUL
PDF/DataSheet Download
- Datasheet: PC87308VUL
- File Size: 124059 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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