PC97307 datasheet(2/218 Pages) NSC

2 / 218 page

Highlights

www.national.com

s A special Plug and Play (PnP) module that includes:

— Flexible IRQs, DMAs and base addresses that meet

the Plug and Play requirements speciﬁed by Mi-

crosoft® in their 1995 hardware design guide for

Windows

® and Plug and Play ISA Revision 1.0A

— Plug and Play ISA mode (with isolation mechanism

– Wait for Key state)

— Motherboard Plug and Play mode

s A Floppy Disk Controller (FDC) that provides:

— A modiﬁable address that is referenced by a 16-bit

programmable register

— Software compatibility with the PC8477, which con-

tains a superset of the ﬂoppy disk controller func-

tions in the

µDP8473, the NEC µPD765A and the

N82077

— 13 IRQ channel options

— Four 8-bit DMA channel options

— 16-byte FIFO

— Burst and non-burst modes

— A high-performance, internal, digital data separator

that does not require any external ﬁlter components

— Support for standard 5.25" and 3.5" floppy disk

drives

— Automatic media sense support

— Perpendicular recording drive support

— Three-mode Floppy Disk Drive (FDD) support

— Full support for the IBM Tape Drive Register (TDR)

implementation of AT and PS/2 drive types

s A Keyboard and mouse Controller (KBC) with:

— A modiﬁable address that is referenced by a 16-bit

programmable register, reported as a ﬁxed address

in resource data

— 13 IRQ options for the keyboard controller

— 13 IRQ options for the mouse controller

— An 8-bit microcontroller

— Software

compatibility

with

the

8042AH

and

PC87911 microcontrollers

— 2 KB of custom-designed program ROM

— 256 bytes of RAM for data

— Five programmable dedicated open drain I/O lines

for keyboard controller applications

— Asynchronous 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 binary and BCD arithmetic

— Operation at 8 MHz,12 MHz or 16 MHz (programma-

ble option)

— Can be customized using the PC87323VUL, which

includes a RAM-based KBC, as a development plat-

form for keyboard controller code

s A Real-Time Clock (RTC) that has:

— A modiﬁable address that is referenced by a 16-bit

programmable register

— 13 IRQ options, with programmable polarity

— DS1287, MC146818 and PC87911 compatibility

— 242 bytes of battery backed up CMOS RAM in two

banks

— Selective lock mechanism for the RTC RAM

— Battery backed up century calendar in days, days of

the week, months and years, with automatic leap-

year adjustment

— Battery backed-up time of day in seconds, minutes

and hours that allows a 12 or 24 hour format and ad-

justments for daylight savings time

— BCD or binary format for time keeping

— Three different maskable interrupt ﬂags:

• Periodic interrupts - At intervals from 122 msec

to 500 msec

• 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, 2.4 V operation that includes

an internal UL protection resistor

— 2

µA maximum power consumption during power

down

— Double-buffer time registers

s 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

Powered turned off when:

— A SWITCH input signal indicates a Switch Off event

— A Fail-safe event occurs (power-save mode detect-

ed but the system is hung up).

— Software turns power off.

s Two UARTs that provide:

— Software compatibility with the 16550A and the

16450

— 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 the UART with Infrared

support (UART2)

s An enhanced UART and Infrared (IR) interface on the

UART2 that supports:

— UART data rates up to 1.5 Mbaud

— IrDA 1.0 SIR

— ASK-IR option of SHARP-IR

— DASK-IR option of SHARP-IR

— Consumer-IR (TV-Remote) circuitry

— A Plug and Play compatible external transceiver

s A bidirectional parallel port that includes:

— A modiﬁable address that is referenced by a 16-bit

programmable register

PC97307 数据表(PDF) 2 Page - National Semiconductor (TI)

PC97307 数据表(HTML) 2 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载

链接网址

PC97307 数据表(PDF) 2 Page - National Semiconductor (TI)

PC97307 数据表(HTML) 2 Page - National Semiconductor (TI)

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表 下载

链接网址

数据表下载