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**????? (Profusion) c:99
Chips:
Memory Access Controller (MAC)
Data Interface Buffer (DIB)
CPUs: 8x P-III Xeon Oct
DRAM Types: SDRAM PC100 2-way Interleave dual channel
Max Mem: 32GB
ECC/Parity: ECC
AGP speed: N/A
Bus Speed: 100
PCI Clock/Bus: 1/3 PCI-66/64
**800 series...
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*UMC...
**UM82C*** (IBM/INTEL Direct replacement) c87
Note: Dates vary for when these chips were first available. Two
databooks have been used one from '86 the other from '91. Not all the
chips are listed in the '86 databook, the date of '87 is an
assumption.
PC/XT:
IBM: UMC: Desc:
Intel 8284 UM82C84A 25MHz CMOS Clock Generator and Driver
Intel 8288 UM82C88 Bus Controller
Intel 8259 UM8259A Programmable Interrupt Controller also UM82C59A-2 (CMOS version)
Intel 8237 UM8237A 3-5MHz Programmable DMA Controller (DMAC)
Intel 8253 UM8253*2 2.6-5MHz Programmable Interval Timer
Intel 8255 UM82C55A* Programmable Peripheral Interface
Note: * indicates: possible compatibility, datasheet does not state
explicitly. YMMV.
Note: *2 indicates: The UM8253 can be replaced with the
UM82C54/-2. The datasheet says it is a superset of the 8253, and
works up to 10MHz. Also it's compatible with the 8254. AT: IBM:
UMC: Desc: Intel 82284 UM82C284* 10-12.5MHz Clock Generator and
Ready Interface Intel 82288 UM82C288* 10-12.5MHz Bus Controller
Intel 8254 UM82C54/-2 8-10MHz CMOS Programmable Interval Timer
Intel 8259 UM8259A Programmable Interrupt Controller also
UM82C59A-2 (CMOS version) Intel 8237 UM8237A 3-5MHz Programmable
DMA Controller (DMAC) 74LS612 UM74HCT612* Memory Mapper MC146818
RTC UM82C6818* Real-Time Clock (RTC) Intel 8047 ?? Keyboard
Controller
Note: * indicates: possible compatibility, datasheet does not state
explicitly. YMMV.
**UM82C088 PC/XT Integration Chip <91...
**UM82C230 286AT MORTAR Chip Set <91...
**UM82C210 386SX/286 AT Chip Set <91...
**UM82C3xx Twinstar & UM82C336F/N & UM82C39x [no datasheet] ?...
**UM82C380 386 HEAT PC/AT Chip Set <91...
**UM82C480 386/486 PC Chip Set c91...
**UM82C493/491 ??????????????? [no datasheet] ?...
**UM8498/8496 486 VL Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8881/8886 HB4 PCI Chipset "Super Energy Star Green"[no dsheet]c94...
**UM8890 Pentium chipset [no datasheet] ?...
**
**Support Chips:
**UM82152 Cache Controller (AUStek A38152 clone) <91...
**UM82C852 Multi I/O For XT <91...
**UM82C206 Integrated Peripheral Controller <91...
**UM82c45x Serial/Parallel chips ?...
**Other chips:...
*Unresearched:...
*VIA...
**VT82C597/AT Apollo VP3, Single-Chip for Pentium with AGP <10/03/97
***Info:...
***Configurations:...
***Features:
o PCI/ISA Green PC Ready
- Supports separately powered 3.3V (5V tolerant) interfaces to
system memory, AGP, and PCI bus
- Supports 3.3V and sub-3.3V interface to CPU
- PC-97 compatible using VT82C586B South Bridge with ACPI Power
Management
o High Integration
- Single chip implementation for 64-bit Socket-7-CPU, 64-bit
system memory, 32-bit PCI and 32-bit AGP interfaces
- Apollo VP3 Chipset: VT82C597 or VT82C597AT system controller
and VT82C586B PCI to ISA bridge
- Chipset includes UltraDMA-33 EIDE, USB, and Keyboard / PS2-Mouse
Interfaces plus RTC / CMOS on chip
o Flexible CPU Interface
- Supports 64-bit Pentium, AMD 5k86, AMD 6k86 and Cyrix 6x86 CPUs
- CPU external bus speed up to 66 MHz (internal 233MHz and above)
- Supports CPU internal write-back cache
- System management interrupt, memory remap and STPCLK mechanism
- Cyrix 6x86 linear burst support
- CPU NA# / Address pipeline capability
- 4 cache lines of CPU/cache-to-DRAM post-write buffers
- 4 quadwords of CPU/cache-to-DRAM read-prefetch buffers
o Advanced Cache Controller
- Direct map write back or write through secondary cache
- Pipelined burst synchronous SRAM (PBSRAM) cache support (with
global write enable feature)
- Flexible cache size: 0K / 256K / 512K / 1M / 2MB
- 32 byte line size to match the primary cache
- Integrated 10-bit tag comparator
- 3-1-1-1 read/write timing for PBSRAM access at 66 MHz
- 3-1-1-1-1-1-1-1 back to back read timing for PBSRAM access at
66 MHz
- Sustained 3 cycle write access for PBSRAM access or CPU to DRAM
and PCI bus post write buffers at 66 MHz
- Data streaming for simultaneous primary and secondary cache line
fill
- System and video BIOS cacheable and write-protect
- Programmable cacheable region and cache timing
o AGP Controller
- AGP v1.0 compliant
- Supports SideBand Addressing (SBA) mode (non-multiplexed
address/data)
- Supports 133MHz 2X mode for AD and SBA signalling
- 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
o GART
- One level TLB structure
- Sixteen entry fully associative page table
- LRU replacement scheme
- Independent GART lookup control for host / AGP / PCI master
accesses
o Intelligent PCI Bus Controller
- PCI buses are synchronous to host CPU bus
- 33 MHz operation on the primary PCI bus
- 66 MHz PCI operation on the AGP bus
- PCI-to-PCI bridge configuration on the 66MHz PCI bus
- Separate data buffers for the two PCI buses
- Peer concurrency
- Concurrent multiple PCI master transactions; i.e., allow PCI
masters from both PCI buses active at the same time
- Allows PCI master access while ISA master/DMA is active
- PCI master snoop ahead and snoop filtering
- Five 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
- Zero wait state PCI master and slave burst transfer rate
- PCI to system memory data streaming up to 132Mbyte/sec
- 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
- 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-2.1 compliant, 32 bit 3.3V PCI interface with 5V tolerant
inputs
o Advanced High-Performance DRAM Controller
- 66MHz DRAM interface
- Concurrent CPU and AGP access
- FP, EDO, SDRAM, and SDRAM-II
- 66MHz DDR (Double Data Rate) supported for SDRAM-II
(supports central and edge DQ, bidirectional DS, and optional
SDR write)
- Different DRAM types may be used in mixed combinations
- Different DRAM timing for each bank
- Mixed 1M / 2M / 4M / 8M / 16MxN DRAMs
- 6 banks up to 1GB DRAMs
- Flexible row and column addresses
- 64-bit data width only
- 3.3V DRAM interface with 5V-tolerant inputs
- 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
(14 MA lines)
- 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
- Concurrent DRAM writeback
- Read around write capability for non-stalled CPU read
- Burst read and write operation
- 5-2-2-2 on page, 8-2-2-2 start page and 11-2-2-2 off page timing
for EDO DRAMs at 66 MHz
- 6-1-1-1 on page, 8-1-1-1 start page and 10-1-1-1 off page for
SDRAMs at 66 MHz
- 5-2-2-2-3-2-2-2 back-to-back accesses for EDO DRAM at 66 MHz
- 6-1-1-1-3-1-1-1 back-to-back accesses for SDRAM at 66 MHz
- BIOS shadow at 16KB increment
- Decoupled and burst DRAM refresh with staggered RAS timing
- Programmable refresh rate, CAS-before-RAS refresh and refresh on
populated banks only
o Built-in NAND-tree pin scan test capability
o 3.3V, 0.5um, high speed / low power CMOS process
o 472 pin BGA Package
o Alternate pinouts available to optimally accommodate different PCB
form factors
- VT82C597 for ATX and NLX
- VT82C597AT for Baby AT and ATX
**VT82C598MVP Apollo MVP3,Single-Chip 66/75/83/100MHz & AGP <09/22/97...
**VT8501 Apollo MVP4,Single-Chip 66-100MHz & AGP <11/04/98...
**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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