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**82489DX Advanced Programmable Interrupt Controller 10/12/92
***Notes:...
***Info:...
***Versions:...
***Features:...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91...
**82496/491 Cache Controller / Cache RAM (for P5 Pentium) 03/22/93...
**82497/492 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**82498/493 Cache Controller / Cache RAM (for P54 Pentium) <Nov94...
**
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**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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*OPTi...
**82C898 System/Power Management Controller (non-cache)c:Nov94
***Notes:...
***Info:
Overview
The 82C898 provides a highly integrated solution for fully compatible,
high performance PC/AT platforms. The 82C898 supports 486SX/DX/DX2/DX4
and P24T microprocessors in the most cost effective and power
efficient designs available today. For high-end system applications,
this device offers optimum performance for systems running up to
50MHz.
Based fundamentally on OPTi’s proven 82C801 and 82C802 design
architectures, the 82C898 adds additional memory configurations and
extensive power management control for the processor and other
motherboard components.
The 82C898 supports the latest in write-back processor designs from
Intel, AMD, and Cyrix, as well as supporting the AT bus and VESA local
bus for compatibility and performance. It also includes an 82C206
Integrated Peripherals Controller (IPC), all in a single 208-pin PQFP
(Plastic Quad Flat Pack) for low cost.
Power Management
Figure 2-1 [see datasheet] exemplifies the flexibility of an
82C898/82C602-based designs GREEN strategy. System designs can easily
accommodate both SLe and non-SLe CPUs. If an Intel non-SLe CPU is
used, SMI#, SMIAOT#, and FLUSH# are no connects. One design can easily
accommodate both types of processors with minimal changes for
upgrades.
***Configurations:...
***Features:...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
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*Unresearched:...
*VIA...
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*Western Digital...
*Winbond...
**W83977F/G/AF/AG WINBOND I/O (Multi I/O) c97
***Info:...
***Versions:...
***Features:
General
o Plug & Play 1.0A Compliant
o Support 13 IRQs, 4 DMA channels, full 16-bit addresses decoding
o Capable of ISA Bus IRQ Sharing
o Compliant with Microsoft PC97 Hardware Design Guide
o Support DPM (Device Power Management), ACPI
o Programmable configuration settings
o 24 or 14.318 Mhz clock input
FDC
o Compatible with IBM PC AT disk drive systems
o Variable write pre-compensation with track selectable capability
o Support vertical recording format
o DMA enable logic
o 16-byte data FIFOs
o Support floppy disk drives and tape drives
o Detects all overrun and underrun conditions
o Built-in address mark detection circuit to simplify the read
electronics
o FDD anti-virus functions with software write protect and FDD write
enable signal (write data signal was forced to be inactive)
o Support up to four 3.5-inch or 5.25-inch floppy disk drives
o Completely compatible with industry standard 82077
o 360K/720K/1.2M/1.44M/2.88M format; 250K, 300K, 500K, 1M, 2M bps
data transfer rate
o Support 3-mode FDD, and its Win95 driver
UART
o Two high-speed 16550 compatible UARTs with 16-byte send/receive
FIFOs
o 3rd UART with 32-byte send/receive FIFO is supported for IR
function [W83977AF/AG only]
o MIDI compatible
o Fully programmable serial-interface characteristics:
- 5, 6, 7 or 8-bit characters
- Even, odd or no parity bit generation/detection
- 1, 1.5 or 2 stop bits generation
o Internal diagnostic capabilities:
- Loop-back controls for communications link fault isolation
- Break, parity, overrun, framing error simulation
o Programmable baud generator allows division of 1.8461 Mhz and
24 Mhz by 1 to (2^16-1)
o Maximum baud rate up to 921k bps for 14.769 Mhz and 1.5M bps
for 24 Mhz
Infrared
o Support IrDA version 1.0 SIR protocol with maximum baud rate up to
115.2K bps
o Support SHARP ASK-IR protocol with maximum baud rate up to 57,600
bps
o Support IrDA version 1.1 MIR (1.152M bps) and FIR (4M bps) protocol
[W83977AF/AG only]
- Single DMA channel for transmitter or receiver
- 3rd UART with 32-byte FIFO is supported in both TX/RX
transmission [W83977AF/AG only]
- 8-byte status FIFO is supported to store received frame status
(such as overrun CRC error, etc.)
o Support auto-config SIR and FIR [W83977AF/AG only]
Parallel Port
o Compatible with IBM parallel port
o Support PS/2 compatible bi-directional parallel port
o Support Enhanced Parallel Port (EPP)
− Compatible with IEEE 1284 specification
o Support Extended Capabilities Port (ECP)
− Compatible with IEEE 1284 specification
o Extension FDD mode supports disk drive B; and Extension 2FDD mode
supports disk drives A and B through parallel port
o Enhanced printer port back-drive current protection
Advanced Power Management (APM) Controlling
o Power turned on when RTC reaches a preset date and time
o Power turned on when a ring pulse or pulse train is detected on the
PHRI, or when a high to low transition on PWAKIN1, or PWAKIN2
input signals
o Power turned on when PANSW input signal indicates a switch on event
o Power turned off when PANSW input signal indicates a switch off
event
o Power turned off when a fail-safe event occurs (power-save mode
detected but system is hung up)
o Power turned off when software issues a power off command
Keyboard Controller
o 8042 based with optional F/W from AMIKKEY-2, Phoenix MultiKey/42 or
customer code
o with 2K bytes of programmable ROM, and 256 bytes of RAM
o Asynchronous Access to Two Data Registers and One status Register
o Software compatibility with the 8042 and PC87911 microcontrollers
o Support PS/2 mouse
o Support port 92
o Support both interrupt and polling modes
o Fast Gate A20 and Hardware Keyboard Reset
o 8 Bit Timer/ Counter; support binary and BCD arithmetic
o 6, 8, 12, or 16 Mhz operating frequency (16 Mhz available only if
input clock rate = 14.318 Mhz)
Real Time Clock
o 27 bytes of clock, On-Now, and control/status register (14 bytes in
Bank 0 and 13 bytes in Bank 2); 242 bytes of general purpose RAM
o BCD or Binary representation of time, calendar, and alarm registers
o Counts seconds, minutes, hours, days of week, days of month, month,
year, and century
o 12-hour/ 24-hour clock with AM/PM in 12-hour mode
o Daylight saving time option; automatic leap-year adjustment
o Dedicated alarm (Alarm B) for On-Now function
o Programmable delay-time between panel switch off and power supply
control
o Software control power-off; various and maskable events to activate
system Power-On
o System Management Interrupt (SMI ) for panel switch power-off event
General Purpose I/O Ports
o 14 programmable general purpose I/O ports; 6 dedicate, 8 optional
o General purpose I/O ports can serve as simple I/O ports, interrupt
steering inputs, watching dog timer output, power LED output,
infrared I/O pins, general purpose address decoder, KBC control I/O
pins.
Package
o 128-pin PQFP
**W83977TF WINBOND I/O (Multi I/O) c97...
**W83977EF WINBOND I/O (Multi I/O) <98...
**W83977ATF WINBOND I/O (Multi I/O) <98...
**
**Disk Controller:
**W83759/A/F/AF Advanced VL-IDE Disk Controller <96...
**W83769 Local Bus IDE Solution <94...
**
**UARTS:
**W86C250A UART (equivalent of INS8C250A) [no datasheet]
**W86C450/P Universal Asynchronous Receiver/Transmitter <Jul89...
**W86C451 I/O controller for IBM PC/AT/XT <Jul89...
**W86C452 I/O controller for IBM PC/AT Jul89...
**W86C456 I/O controller [no datasheet] ?
**W860551/P UART with FIFO and Printer Port Controller <94...
**
**Other:...
*ZyMOS...
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