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**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91
***Notes:...
***Info:...
***Features:...
**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...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
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**82C381/382 HiD/386 (386DX) c:89
***Info:
The HiD/386 Chipset, 82C381 and 82C382D, support high integration
implementations of Direct Mapped Cache with 32KB/64KB/128KB Cache for
25 and 33 MHz 386/AT Personal Computers. Combined with the 82C206
Integrated Peripherals Controller, it integrates the 386/AT mother-
board to under 20 devices, plus memory. It is designed to cost reduce
discrete and CHIPS’CS8230 based 82385 Cache 386/AT designs, as well as
boost the performance of these designs to 33 MHz, with >64KB Cache.
The 82681 provides system control logic and data bus conversion logic.
The control logic consists of 386 CPU control logic, AT Bus cycle
control, 387 Numeric Processor control logic, synchronous clock divide
logic and control of the local peripheral bus. The data bus conversion
logic consists of various 8, 16, 32 bit conversions for ROM cycles, AT
bus cycles and memory cycles.
The 820382D performs the Memory Management functions for the HiD/AT
chipset. It is designed to optimize cost of high performance 386/AT
systems with 64KB, l28KB or larger Direct Mapped Cache Memory. It also
implements logic to maintain compatibility in the AT environment . It
provides a Page Interleave backend for main DRAM memory, in order to
improve performance during miss cycles. It also has features for
reducing system cost.
It minimizes Cache Memory cost by allowing the use of slow SRAM; by
supporting single EPROM BIOS configurations; putting DRAM on the local
bus and consequently reducing DRAM speeds by 15ns typically; and by
remapping 256K of DRAM between 640K and 1024K to top of main memory.
It provides a very flexible implementation of paging for the main DRAM
memory. For even bank configurations, it provides 2-way or 4-way
interleaving; for odd banks it provides paging. This provides a
flexible approach to increasing the size of the local memory as
software demands increase, without imposing a penalty on performance.
Finally, memory performance is optimized by shadow RAM techniques for
BIOS ROMs; concatenated pages for multiple hank configurations; paging
for odd banks; and variable page size for larger DRAMs.
System Architecture
The HiD/AT chipset is compatible with the 82C206 Integrated
Peripherals Controller. Consequently, with the 82C206, a very high
integration and very high performance 386/AT can be implemented. A
typical motherboard can be designed with less than 20 devices plus
memory.
For larger AT designs, targeted at file-servers and departmental
computers, designs with 8 or more slots can be supported with external
AT bus drivers.
***Configurations:...
***Features:...
**82C391/392 386WB PC/AT Chipset (386DX) <Dec90...
**82C461/462 Notebook PC/AT chipset [no datasheet] ?...
**82c463 SCNB Single Ship Notebook c:92...
**82c465MV/A/B Single-Chip Mixed Voltage Notebook Solution <Oct97...
**82C481?/482? HiP/486 & HiB/486 [no datasheet] Oct89...
**82C491/392 486WB PC/AT Chipset <04/21/91...
**82C493/392 486SXWB <10/21/91...
**82C495SX/392SX LCWB PC/AT chipset [no datasheet] ?...
**82C495SLC DXSLC 386/486 Low Cost Write Back c:92...
**82C495XLC PC/AT Chip Set c:93...
**82c496A/B DXBB PC/AT Chipset <Mar92...
**82C496/7 DXBB PC/AT Chipset (Cached) <01/16/92...
**82C498 DXWB PC/AT chipset [no datasheet] ?...
**82C499 DXSC DX System Controller c:93...
**82C546/547 Python PTM3V c:94...
**82C556/7/8 Viper [no datasheet] ?...
**82C556/7/8N Viper-N Viper Notebook Chipset <05/25/95...
**82C556M/7M/8E Viper-N+ Viper Notebook Chipset c:96...
**82C566/7/8 Viper-Max Chipset Scalable MultiMedia PC Solution ?...
**82C571/572 486/Pentium c:93...
**82C576/7/8 Viper Xpress [no datasheet] ?...
**82C576/8/9 Viper XPress+ [no datasheet, some info] <01/16/97...
**82C596/597 PTMAWB Pentium Adaptive Write-back (Cobra) c:93...
**82C650/1/2 Discovery (Pentium Pro) [no datasheet] ?...
**82C681/2/6/7 386/486WB EISA c:92...
**82C683 386/486AWB EISA [no datasheet] ?...
**82C693/6/7 Pentium uP Write Back Cache EISA c:93...
**82C700 FireStar c:97...
**82C701 FireStar Plus c:97...
**82C750 Vendetta [no datasheet] ?...
**82c801 SCWB2 DX Single Chip Solution c:92...
**82C802 SCWB2 PC/AT Single Chip [no datasheet] ?...
**82C802G/GP System/Power Management Controller (cached) c:93...
**82C895 System/Power Management Controller (cached) c:Sep94...
**82C898 System/Power Management Controller (non-cache)c:Nov94...
**
**Support Chips:
**82C601/2 Buffer Devices <Nov94...
**82C822 PCIB (VLB-to-PCI bridge) c:94...
**Other:...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
**W83977F/G/AF/AG WINBOND I/O (Multi I/O) c97
***Info:
GENERAL DESCRIPTION
This data sheet covers two products: W83977F/G, and W83977AF/AG whose
pin assignment, and most of the functions are the same. W83977AF/AG is
an advanced version of W83977F/G featuring the FIR function.
W83977F/G, W83977AF/AG are evolving products from Winbond’s most
popular I/O chip W83877F -- which integrates the disk drive adapter,
serial port (UART), IrDA 1.0 SIR, parallel port, configurable
plug-and-play registers in one chip --- plus additional powerful
features: ACPI, 8042 keyboard controller with PS/2 mouse support, Real
Time Clock, 14 general purpose I/O ports, full 16-bit address
decoding, TV remote IR (Consumer IR, supporting NEC, RC-5, extended
RC-5, and RECS-80 protocols). In addition, W83977AF/AG provides the
functions of IrDA 1.1 (MIR for 1.152M bps or FIR for 4M bps).
The disk drive adapter functions of W83977F/G, W83977AF/AG include a
floppy disk drive controller compatible with the industry standard
82077/ 765, data separator, write pre-compensation circuit, decode
logic, data rate selection, clock generator, drive interface control
logic, and interrupt/ DMA logic. The wide range of functions
integrated onto the W83977F/G, W83977AF/AG greatly reduces the number
of components required for interfacing with floppy disk drives. The
W83977F/G, W83977AF/AG supports up to four 360K, 720K, 1.2M, 1.44M, or
2.88M disk drives and data transfer rates of 250 Kb/s, 300 Kb/s, 500
Kb/s,1 Mb/s, and 2 Mb/s.
The W83977F/G, W83977AF/AG provide two high-speed serial communication
ports (UARTs), one of which supports serial Infrared communication.
Each UART includes a 16-byte send/receive FIFO, a programmable baud
rate generator, complete modem control capability, and a processor
interrupt system. Both UARTs provide legacy speed with baud rate
115.2k and provide advanced speed with baud rate 230k, 460k, and 921k
bps which support higher speed modems. W83977AF/AG alone provides
independent 3rd UART (32-byte FIFO) dedicated for IR function.
The W83977F/G, W83977AF/AG supports one PC-compatible printer port
(SPP), Bi-directional Printer port (BPP) and also Enhanced Parallel
Port (EPP) and Extended Capabilities Port (ECP). Through the printer
port interface pins, also available are: Extension FDD Mode and
Extension 2FDD Mode allowing one or two external floppy disk drives to
be connected.
The configuration registers support mode selection, function
enable/disable, and power down function selection. Furthermore, the
configurable PnP features are compatible with the plug-and-play
feature demand of Windows 95TM, which makes system resource allocation
more efficient than ever.
W83977F/G, W83977AF/AG provides functions that comply with ACPI
(Advanced Configuration and Power Interface), which includes support
of legacy and ACPI power management through SMI or SCI function
pins. W83977F/G, W83977AF/AG also has auto power management to reduce
power consumption.
The keyboard controller is based on 8042 compatible instruction set
with a 2K Byte programmable ROM and a 256-Byte RAM bank. Keyboard BIOS
firmware is available with optional AMIKEY-2, Phoenix MultiKey/42, or
customer code.
The W83977F/G, W83977AF/AG provides a set of flexible I/O control
functions to the system designer through a set of General Purpose I/O
ports. These GPIO ports may serve as simple I/O or may be individually
configured to provide a pre-defined alternate function.
W83977F/G, W83977AF/AG is made to fully comply with Microsoft PC97
Hardware Design Guide. IRQs, DMAs, and I/O space resource are flexible
to adjust to meet ISA PnP requirement. Full 16-bit address decoding is
also provided. Moreover W83977F/G, W83977AF/AG is made to meet the
specification of PC97‘s requirement in the power management: ACPI and
DPM (Device Power Management).
***Versions:...
***Features:...
**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...
*General Sources:...
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