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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...
**
**Later chipsets (basic spec):
**440 series:...
**450NX (?) 06/29/98:...
**????? (Profusion) c:99...
**800 series...
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*HMC (Hulon Microelectronics)...
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*OPTi...
**82C283 386SX System Controller c:91
***Notes:...
***Info:...
***Configurations:...
***Features:...
**82C291 SXWB PC/AT Chipset (386SX) c:91...
**82C295 SLCWB PC/AT Chipset (386SX) ?...
**82C381/382 HiD/386 (386DX) c:89...
**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...
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*Unresearched:...
*VIA...
**VT8501 Apollo MVP4,Single-Chip 66-100MHz & AGP <11/04/98
***Notes:...
***info:
The Apollo MVP4 is a PC Socket-7 system logic North Bridge with
integrated 2D / 3D Graphics accelerator. The core logic portion of
the chip is based on the popular 100MHz VIA Apollo MVP3 chipset with
enhanced features and graphics accelerator based on the Cyber9398DVD
from Trident Microsystems, Inc. The combination of the two leading
edge technologies provides a stable, cost-effective, and high
performance solution for personal computers, embedded systems, set-top
boxes and others. As shown in Figure 1 [see datasheet] below, the
Apollo MVP4 will interface to:
o Socket 7 CPU (66 – 100 MHz)
o L2 Cache RAM & Tag
o SDRAM Memory Interface
o PCI Bus (30 - 33 MHz)
o Analog RGB Monitor with DDC
o DFP / Digital Monitor Interface (TMDS)
o Video Capture / Playback CODECs
Apollo MVP4 Core Logic Overview
The Apollo MVP4 – System Media Accelerated North Bridge (SMA) is a
high performance, cost-effective and energy efficient solution for the
implementation of Integrated 2D/3D Graphics - PCI - ISA personal
computer systems from 66 MHz to 100 MHz based on 64-bit Socket-7
(Intel Pentium and Pentium MMX; AMD K6 and K6-2; Cyrix / National 6x86
/ 6x86MX, IDT / Centaur C6/WinChip), and Rise MP6 processors.
The Apollo MVP4 controller provides superior performance between the
integrated 2D/3D Graphics Engine, CPU, optional synchronous cache,
DRAM, and PCI bus with pipelined, burst, and concurrent operation.
For L2-Cache solutions using pipelined burst synchronous SRAMs,
3-1-1-1-1-1-1-1 timing can be achieved for both read and write
transactions at 100 MHz. Tag timing is specially optimized internally
(less than 4 nsec setup time) to allow implementation of L2 cache
using an external tag for t he most flexible cache organization (0K /
256K / 512K / 1M / 2M). Four cache lines (16 quadwords) of CPU/cache
to DRAM write buffers with concurrent write-back capability are
included on chip to speed up cache read and write miss cycles.
The Apollo MVP4 supports six banks of DRAMs up to 768MB. The DRAM
controller supports standard Fast Page Mode (FP) DRAM, EDO-DRAM,
Synchronous DRAM (SDRAM), and Virtual Channel Synchronous DRAM in a
flexible mix / match manner. The Synchronous DRAM interface allows
zero wait state bursting between the DRAM and the data buffers at 100
MHz. The six banks of DRAM can be composed of an arbitrary mixture of
1M / 2M / 4M / 8M / 16MxN DRAMs. The DRAM controller also supports
optional ECC (single-bit error correction and multi-bit detection) or
EC (error checking) capability separately selectable on a bank-by-bank
basis. The DRAM Controller can run at either the host CPU bus
frequency (66 / 100 MHz) or at the PC100 memory frequency (100 MHz)
with built-in deskew PLL timing control. With the advanced DRAM
controller, the Apollo MVP4 allows implementation of the most
flexible, reliable, and high-performance DRAM interface.
The Apollo MVP4 also supports full AGP v2.0 capability with the
internal 2D/3D Graphics Engine for maximum software compatibility. An
eight level request queue plus a four level post-write request queue
with thirty-two and sixteen quadwords of read and write data FIFO’s
respectively are included for deep pipelined and split AGP
transactions. A single-level GART TLB with 16 full associative
entries and flexible CPU/AGP/PCI remapping control is also provided
for operation under protected mode operating environments. Both
Windows-95 VXD and Windows-98 / NT5 miniport drivers are supported.
The Apollo MVP4 supports one 32-bit 3.3 / 5V system bus (PCI) that is
synchronous / pseudo-synchronous to the CPU bus. The chip also
contains a built-in AGP bus -to- PCI bus bridge to allow simultaneous
concurrent operations on each bus. Five levels (doublewords) of
posted write buffers are included to allow for concurrent CPU and PCI
operation. For PCI master operation, forty-eight levels (doublewords)
of posted write buffers and sixteen levels (doublewords) of prefetch
buffers are included for concurrent PCI bus and DRAM/cache accesses.
The chip also supports enhanced PCI bus commands such as
Memory-Read-Line, Memory-Read-Multiple, and Memory-Write-Invalid
commands to minimize snoop overhead. In addition, advanced features
are supported such as snoop ahead, snoop filtering, L1 write-back
forward to PCI master, and L1 write-back merged with PCI post write
buffers to minimize PCI master read latency and DRAM utilization.
Delayed transaction and read caching mechanisms are also implemented
for further improvement of overall system performance.
The Apollo MVP4 provides independent clock stop control for the CPU /
SDRAM, PCI, and AGP buses and Dynamic CKE control for powering down of
the SDRAM. A separate suspend-well plane is implemented for the SDRAM
control signals for Suspend-to-DRAM operation. Coupled with the
324-pin Ball Grid Array VIA VT82C596B south bridge chip, a complete PC
main board can be implemented with no external TTLs.
The Apollo MVP4 controller coupled with VIA’s highly integrated south
bridge, the VT82C686A, is ideal for high performance, energy
efficient, and highly integrated computer systems. The VT82C686A
supports a PCI-to-ISA bus controller, four USB ports, dual bus-master
IDE with UltraDMA33/66, AC97 basic digital audio, system hardware
monitoring, and integrated "Super-I/O" functionality.
***Configurations:...
***Features:
o General
- 492 BGA Package (35mm x 35mm )
- 2.5 Volt +/- 0.2V Core
- Supports separately powered 3.3V tolerant interface to CPU and
Memory
- Supports separately powered 5.0V tolerant interface to PCI bus
and Video interface
- 2.5V, 0.25um, high speed / low power CMOS process
- PC-98/99 compatible using VIA VT82C686A (352-pin BGA) south
bridge chip
- 66 / 100 MHz Operation
CPU Internal DRAM / PCI Comments
AGP VGC
100 MHz 66 MHz 100 MHz 33 MHz synchronous
(DRAM uses CPU clock)
66 MHz 66 MHz 66 MHz 33 MHz synchronous
(DRAM uses CPU clock)
66 MHz 66 MHz 100 MHz 33 MHz Up pseudo-synchronous
(DRAM uses MEM clock)
o Socket 7 Host Interface
- Supports all Socket-7 / Super-7 processors including 64-bit
Intel Pentium / Pentium with MMX , AMD 6K86 (K6 and K6-2),
Cyrix/IBM 6x86 / 6x86MX, IDT/Centaur C6, and Rise MP6 CPUs
- 66 / 100 MHz CPU "Front Side Bus"
- Supports 3.3V and sub-3.3V interface to CPU
- Built-in de-skew PLL (Phase Lock Loop) circuitry for optimal
skew control within and between clocking regions
- Cyrix/IBM 6x86 linear burst support
- AMD K6 and K6-2 write allocation support
- Supports CPU-to-DRAM write combining
- System management interrupt, memory remap and stop clock
mechanisms
o Advanced L2 Cache
- Direct map write-back or write-through secondary cache
- Pipelined burst synchronous SRAM (PBSRAM) cache support
- Flexible cache size: 0K / 256K / 512K / 1M / 2MB
- 32 byte line size to match the primary cache
- Integrated 8-bit tag comparator
- 3-1-1-1-1-1-1-1 back to back read timing for PBSRAM accesses
up to 100 MHz
- Tag timing optimized (less than 4ns setup time) to allow
external tag SRAM implementation for most flexible cache
organization
- Sustained 3 cycle write access for PBSRAM access or CPU to
DRAM & PCI bus post write buffers up to 100 MHz
- Supports CPU single read cycle L2 allocation
- System and video BIOS cacheable and write-protect
- Programmable cacheable region
o Internal Accelerated Graphics Port (AGP) Controller
- AGP v2.0 compliant for 1x and 2x transfer modes
- Pipelined split-transaction long-burst transfers up to
533 MB/sec
- Eight level read request queue
- Four level posted-write request queue
- Thirty-two level (quadwords) read data FIFO (128 bytes)
- Sixteen level (quadwords) write data FIFO (64 bytes)
- Intelligent request reordering for maximum AGP bus utilization
- Supports Flush/Fence commands
- Graphics Address Relocation Table (GART)
- One level TLB structure
- Sixteen entry fully associative page table
- LRU replacement scheme
- Independent GART lookup control for host / AGP / PCI master
accesses
- Windows 95 OSR-2 VXD and integrated Windows 98 / NT5 miniport
driver support
o Concurrent PCI Bus Controller
- PCI bus is synchronous / pseudo-synchronous to host CPU bus
- 33 MHz operation on the primary PCI bus
- Supports up to five PCI masters
- Peer concurrency
- Concurrent multiple PCI master transactions; i.e., allow PCI
masters from both PCI buses active at the same time
- Zero wait state PCI master and slave burst transfer rate
- PCI to system memory data streaming up to 132Mbyte/sec
- PCI master snoop ahead and snoop filtering
- Six levels (double-words) of CPU to PCI posted write buffers
- Byte merging in the write buffers to reduce the number of PCI
cycles and to create further PCI bursting possibilities
- Enhanced PCI command optimization (MRL, MRM, MWI, etc.)
- Forty-eight levels (double-words) of post write buffers from
PCI masters to DRAM
- Sixteen levels (double-words) of prefetch buffers from DRAM
for access by PCI masters
- Supports L1/L2 write-back forward to PCI master read to
minimize PCI read latency
- Supports L1/L2 write-back merged with PCI master post-write to
minimize DRAM utilization
- Delay transaction from PCI master reading DRAM
- Read caching for PCI master reading DRAM
- Transaction timer for fair arbitration between PCI masters
(granularity of two PCI clocks)
- Symmetric arbitration between Host/PCI bus for optimized
system performance
- Complete steerable PCI interrupts
- PCI-2.2 compliant, 32 bit 3.3V PCI interface with 5V tolerant
inputs
o High-Performance DRAM Controller
- 64-bit DRAM interface synchronous with host CPU (66//100 MHz)
or internal Memory Clock (100 MHz)
- Concurrent CPU and AGP access
- Supports both standard PC100 and "Virtual Channel" PC100
SDRAMs as well as FPG and EDO DRAMs
- Different DRAM types (FPG, EDO, and SDRAM) may be used in
mixed combinations
- Different DRAM timing for each bank
- Dynamic Clock Enable (CKE) control for SDRAM power reduction
- Mixed 1M / 2M / 4M / 8M / 16MxN DRAMs
- 6 banks up to 768MB DRAMs
- Flexible row and column addresses
- 64-bit data width only
- 3.3V DRAM interface
- Programmable I/O drive capability for MA, command, and MD
signals
- Optional bank-by-bank ECC (single-bit error correction and
multi-bit error detection) or EC (error checking only) for
DRAM integrity
- Two-bank interleaving for 16Mbit SDRAM support
- Two-bank and four bank interleaving for 64Mbit SDRAM support
- Supports maximum 8-bank interleave (i.e., 8 pages open
simultaneously); banks are allocated based on LRU
- Seamless DRAM command scheduling for maximum DRAM bus
utilization (e.g., precharge other banks while accessing the
current bank)
- Four cache lines (16 quadwords) of CPU/cache to DRAM write
buffers
- Four quadwords of CPU/cache to DRAM read prefetch buffers
- Concurrent DRAM writeback
- Read around write capability for non-stalled CPU read
- Burst read and write operation
- 5-2-2-2-2-2-2-2 back-to-back accesses for EDO DRAM
- 6-1-1-1-2-1-1-1 back-to-back accesses for SDRAM
- BIOS shadow at 16KB increment
- Decoupled and burst DRAM refresh with staggered RAS timing
- Programmable refresh rate and refresh on populated banks only
- CAS before RAS or self refresh
o Sophisticated Power Management Features
- Independent clock stop controls for CPU / SDRAM, Internal AGP
and PCI bus
- PCI and AGP bus clock run and clock generator control
- Suspend power plane preserves memory data
- Suspend-to-DRAM and Self-Refresh operation
- Dynamic clock gating for internal functional blocks for power
reduction during normal operation
- Low-leakage I/O pads
o General Graphic Capabilities
- 64-bit Single Cycle 2D/3D Graphics Engine
- Supports 2 to 8 Mbytes of Frame Buffer located in System Memory
- Real Time DVD MPEG-2 and AC-3 Playback
- Video Processor
- I2C Serial Interface
- Integrated 24-bit 230MHz True Color DAC
- Extended Screen Resolutions up to 1600x1200
- Extended Text Modes 80 or 132 columns by 25/30/43/60 rows
- DirectX 6 and OpenGL ICD API
o High Performance rCADE3D Accelerator
- 32 entry command queue, 32 entry data queue
- 4Kbyte texture cache with over 90% hit rates
- Pipelined Setup/Texturing/Rendering Engines
- DirectDraw acceleration
- Multiple buffering and page flipping
o Setup Engine
- 32-bit IEEE floating point input data
- Slope and vertex calculations
- Back facing triangle culling
- 1/16 sub-pixel positioning
o Rendering Engine
- High performance single pass execution
- Diffused and specula lighting
- Gouraud and flat shading
- Anti-aliasing including edge, scene, and super-sampling
- OpenGL compliant blending for fog and depth-cueing
- 16-bit Z-buffer
- 8/16/32 bit per pixel color formats
o Texturing Engine
- D3D compressed texture formats DXT1 and DXT2
- Anisotropic texture filtering
- 1/2/4/8-bits per pixel compact palletized textures
- 16/32-bits per pixel quality non-palletized textures
- Pallet formats in ARGB 565, 1555, or 444
- Tri-linear, bi-linear, and point-sampled filtering
- Mip-mapping with multiple Level-Of-Detail (LOD) calculations
and perspective correction
- Color keying for translucency
o 2D GUI Engine
- 8/15/16/24/32-bits per pixel color formats
- 256 Raster Operations (ROPs)
- Accelerated drawing: BitBLTs, lines, polygons, fills,
patterns, clipping, bit masking
- Panning, scrolling, clipping, color expansion, sprites
- 32x32 and 64x64 Hardware Cursor
- DOS graphics and text modes
o DVD
- Hardware-Assisted MPEG-2 Architecture for DVD with AC-3
- Simultaneous motion compensation and front-end processing
(parsing, decryption and decode)
- Supports full DVD 1.0, VCD 2.0 and CD-Karaoke
- Microsoft DirectShow 2.x native support, backward compatible to
MCI
- No additional frame buffer requirements
- Dynamic frame and field de-interlace filtering for high quality
playback on VGA monitors (Bob and Weave)
- Tamper-proof software CSS implementation
- Freeze, Fast-Forward, Slow Motion, Reverse
- Pan-and-Scan support for 16:9 sequence
o Video Processor
- On-chip Color Space Converter (CSC)
- Anti-tearing via two frame buffer based capture surfaces
- Minifier for video stream compression and filtering
- Horizontal/vertical interpolation with edge recovery
- Dual frame buffer apertures for independent memory access for
graphics and video
- YUV 4:2:2/4:1:1/4:2:0 and RGB formats
- Capture / ZV Port to MPEG and video decoder
- Vertical Blank Interval for Intercast
- Overlay differing video and graphic color depths
- Display two simultaneous video streams from both internal AGP
and Capture / ZV Port
- Two scalers and Color Space Converters (CSC) for independent
windows
o Digital Flat Panel (DFP) Interface
- 85MHz DFP interface supports 1024x768 panels
- Allows external TMDS transmitter for advanced panel interfaces
o Testability
- Build-in NAND-tree pin scan test capability
**VT82C680 Apollo P6, Pentium-Pro Chip Set <08/30/96...
**Support chips:
**VT82C505 Pentium/486 VL to PCI Bridge <05/30/94...
**VT82C586/A/B PCI Integrated Peripheral Controller <10/13/96...
**VT82C596/A Mobile PCI Integrated Peripheral Controller <11/05/97...
**VT82C686A/B PCI Super-I/O Integrated Peripheral Ctrl. <02/10/98...
**Later P-Pro/II/III/Celeron...
**Later AMD...
**Other...
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*ZyMOS...
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