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**82289 Bus Arbiter for iAPX 286 Processor Family c83
***Info:...
***Info:
The Intel M82289 Bus Arbiter is a 5-volt, 20-pin HMOS III component
for use in multiple bus master M80286 systems. The M82289 provides a
compact solution to system bus arbitration for the M80286 CPU.
The complete IEEE 796 Standard bus arbitration protocol is supported.
Three modes of bus release operation support a number of bus usage
models.
FUNCTIONAL DESCRIPTION
The M82289 Bus Arbiter in conjunction with the M82C288 Bus Controller
and the M82C284 Clock Generator interface the M80286 processor or some
other bus master to a multi-master system bus. The arbiter multiplexes
a processor onto a multi-master system bus. It avoids contention with
other bus masters.
The M82289 has two separate state machines which communicate through
bus request and release logic. The processor interface state machine
is synchronous with the local system clock (CLK) and the multi-master
system bus interface state machine is synchronous with the bus clock
(BCLK).
The M82289 performs all signal ling to request, obtain, and release
the system bus. External logic is used to determine which bus cycles
require the system bus and th resolve priorities of simultaneous
requests for control of the system bus.
***Versions:...
***Features:...
**82258 Advanced Direct Memory Access Coprocessor(ADMA) 01/01/84...
**82335 High-Integration Interface Device For 386SX c:Nov88...
**82360SL I/O Subsystem 10/05/90...
**82370 Integrated System Peripheral (for 82376) c:Oct88...
**82371FB/SB PCI ISA IDE Xcelerator 82371FB/82371SB (PIIX/3) 01/31/95...
**82371MX Mobile PCI I/O IDE Xcelerator (MPIIX) 11/01/95...
**82371AB PCI-TO-ISA / IDE Xcelerator 82371AB (PIIX4) 02/17/97...
**82374/82375 PCI-EISA Bridge (82374EB/82375EB, 374SB/375SB) c:Mar93...
**82378 System I/O (SIO) (82378IB and 82378ZB) c:Mar93...
**82379AB System I/O-APIC (SIO.A) <Dec94...
**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87...
**82380FB/AB PCIset: 82380FB Mobile PCI-to-PCI Bridge(MPCI2) 02/17/97...
**82384 Clock Generator and Reset Interface c86...
**82385 32-bit Cache Controller for 80386 09/29/87...
**82385SX 32-bit Cache Controller for 80386SX 01/25/89...
**82395DX High Performance Smart Cache 06/18/90...
**82395SX Smart Cache 12/17/90...
**82396SX Smart Cache 12/17/90...
**82485 Turbo Cache (and 485Turbocache) c90...
**82489DX Advanced Programmable Interrupt Controller 10/12/92...
**82495DX/490DX DX CPU-Cache Chip Set <Sep91...
**82495XP/490XP Cache Controller / Cache RAM (for i860) 06/05/91
***Notes:...
***Info:...
***Features:
o Two-Way, Set Associative, Secondary Cache for i860 XP
Microprocessor
o 50 MHz "No Glue" Interface with CPU
o Configurable
- Cache Size 256 or 512 Kbytes
- Line Width 32, 64 or 128 Bytes
- Memory Bus Width 64 or 128 Bits
o Dual-Ported Structure Permits Simultaneous Operations on CPU and
Memory Buses
o Efficient MRU Way Prediction
- Zero Wait States on MRU Hit
- One Walt State on MRU Miss
o Dynamically Selectable Update Policies
- Write-Through
- Write-Once
- Write-Back
o MESI Cache Consistency Protocol
o Hardware Cache Snooping
o Maintains Consistency with Primary Cache via Inclusion Principle
o Flexible User-Implemented Memory Interface Enables Wide Range of
Product Differentiation
- Clocked or Strobed
- Synchronous or Asynchronous
- Plpelining
- Memory Bus Protocol
o 82495XP Cache Controller Available in 208-Lead Ceramic Pin Grid
Array Package
o 82490XP Cache RAM Available in 84-Lead Plastic Quad Flatpack
Package
**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
***810 (Whitney) 04/26/99...
***810L (Whitney) 04/26/99...
***810-DC100 (Whitney) 04/26/99...
***810e (Whitney) 09/27/99...
***810e2 (Whitney) 01/03/01...
***815 (Solano) 06/19/00...
***815e (Solano-2) 06/19/00...
***815em (Solano-?) 10/23/00...
***815ep (Solano-3) c:Nov'00...
***815p (Solano-3) c:Mar'01...
***815g (Solano-3) c:Sep'01...
***815eg (Solano-3) c:Sep'01...
***820 (Camino) 11/15/99...
***820e (Camino-2) 06/05/00...
***830M (Almador) 07/30/01...
***830MP (Almador) 07/30/01...
***830MG (Almador) 07/30/01...
***840 (Carmel) 10/25/99...
***845 (Brookdale) 09/10/01...
***845MP (Brookdale-M) 03/04/02...
***845MZ (Brookdale-M) 03/04/02...
***845E (Brookdale-E) 05/20/02...
***845G (Brookdale-G) 05/20/02...
***845GL (Brookdale-GL) 05/20/02...
***845GE (Brookdale-GE) 10/07/02...
***845PE (Brookdale-PE) 10/07/02...
***845GV (Brookdale-GV) 10/07/02...
***848P (Breeds Hill) c:Aug'03...
***850 (Tehama) 11/20/00...
***850E (Tehama-E) 05/06/02...
***852GM (Montara-GM) 01/14/03...
***852GMV (Montara-GM) ???...
***852PM (Montara-GM) 06/11/03...
***852GME (Montara-GM) 06/11/03...
***854 (?) 04/11/05...
***855GM (Montara-GM) 03/12/03...
***855GME (Montara-GM) 03/12/03...
***855PM (Odem) 03/12/03...
***860 (Colusa) 05/21/01...
***865G (Springdale) 05/21/03...
***865PE (Springdale-PE) 05/21/03...
***865P (Springdale-P) 05/21/03...
***865GV (Springdale-GV) c:Sep'03...
***875P (Canterwood) 04/14/03...
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