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**82489DX Advanced Programmable Interrupt Controller 10/12/92
***Notes:...
***Info:
1.0 INTRODUCTION
The 82489DX Advanced Programmable Interrupt Controller provides
multiprocessor interrupt management, providing both static and dynamic
symmetrical interrupt distribution across all processors.
The main function of the 82489DX is to provide interrupt management
across all processors. This dynamic interrupt distribution includes
routing of the interrupt to the lowest-priority processor. The 82489DX
works in systems with multiple I/O subsystems, where each subsystem
can have its own set of interrupts. This chip also provides
inter-processor interrupts, allowing any processor to interrupt any
processor or set of processor. Each 82489DX I/O init interrupt input
pin is individually programmable by software as either edge or level
triggered. The interrupt vector and interrupt steering information an
be specified per pin. A 32-bit wide timer is provided that can be
programmed to interrupt the local processor. the timer can be used as
a counter to provide a time base to software running on the processor,
or to generate time slice interrupts locally to that processor. the
82489DX provides 32-bit software access to its internal
registers. Since no 82489DX register read have any side effects, the
82489DX registers can be aliased to a user read-only page for fast
user access (e.g., performance monitoring timers).
The 82489DX supports a generalized naming/addressing scheme that can
be tailored by software to fit a variety of system architectures and
usage models. It also supports 8259A compatibility by becoming
virtually transparent with regard to an externally connected 8259A
style controller, making the 8259A visible to software.
***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...
*Headland/G2...
*HMC (Hulon Microelectronics)...
*Logicstar...
**Other:
SL7001 MDA Graphics Controller
SL5001 Parallel Printer Port Interface
SL2002 Dual Channel NRZI Encoder / Decoder
SL4000 Lan controller
*Motorola...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**5596/5513 (Genesis) Pentium PCI Chipset <03/26/96
***Info:...
***Configurations:...
***Features:
o Supports Intel Pentium CPU and other compatible CPU at
66/60/50MHz (external clock speed)
o Supports VGA Shared Memory Architecture
- Direct Memory Accesses
- Shared Memory Area 0.5M, 1M, 1.5M, 2M, 2.5M, 3M, 3.5M, 4M.
- Built-in 2-Priority Scheme.
o Supports the Pipelined Address Mode of Pentium CPU.
o Integrated Second Level (L2) Cache Controller
- Write Through and Write Back Cache Modes
- 8 bits or 7 bits Tag with Direct Mapped Cache Organization
- Supports Pipelined Burst SRAM.
- Supports 256 KBytes to 1 MBytes Cache Sizes.
- Cache Read/Write Cycle of 3-1-1-1 Pipelined Burst SRAM at 66
Mhz and 3-1-1-1-1-1-1-1 at back to back read cycle.
o Integrated DRAM Controller
- Supports 4 RAS lines, the memory size is from 4MBytes up to
512Mbytes.
- Supports 256K/512K/1M/2M/4M/16M x N 70ns FP/EDO DRAM
- Supports 4K Refresh DRAM
- Supports 3V or 5V DRAM.
- Supports Symmetrical and Asymmetrical DRAM.
- Supports 32 bits/64 bits mixed mode configuration
- Supports Concurrent Write Back
- Table-free DRAM Configuration, Auto-detect DRAM size, Bank
Density, Single/Double sided DRAM, EDO/ FP DRAM for each bank
- Supports CAS before RAS "Intelligent Refresh"
- Supports Relocation of System Management Memory
- Programmable CAS# Driving Current
- Fully Configurable for the Characteristic of Shadow RAM (640
KByte to 1 Mbyte)
o Supports EDO/FP 5/6-2-2-2/-3-3-3 Burst Read Cycles
o Two Programmable Non-Cacheable Regions
o Option to Disable Local Memory in Non-Cacheable Regions
o Shadow RAM in Increments of 16 KBytes
o Supports SMM Mode of CPU.
o Supports CPU Stop Clock.
o Supports Break Switch.
o Provides High Performance PCI Arbiter.
- Supports 4 PCI Master.
- Supports Rotating Priority Mechanism.
- Hidden Arbitration Scheme Minimizes Arbitration Overhead.
- Supports Concurrency between CPU to Memory and PCI to PCI.
o Integrated PCI Bridge
- Supports Asynchronous PCI Clock.
- Translates the CPU Cycles into the PCI Bus Cycles
- Provides CPU-to-PCI Read Assembly and Write Disassembly
Mechanism
- Translates Sequential CPU-to-PCI Memory Write Cycles into PCI
Burst Cycles.
- Zero Wait State Burst Cycles.
- Supports Advance Snooping for PCI Master Bursting.
- Maximum PCI Burst Transfer from 256 Bytes to 4 KBytes.
o 388-Pin BGA Package.
o 0.5μm CMOS Technology.
**5597/5598 (Jedi) Pentium PCI/ISA Chipset <04/15/97...
**530/5595 (Sinbad) Host, PCI, 3D Graphics & Mem. Ctrl.<11/10/98...
**540 (Spartan) Super7 2D/3D Ultra-AGP Single C.S.<11/30/99...
**55x SoC (System-on-chip) <03/14/02...
**
**Support chips:
**85C206 Integrated Peripheral Controller [no datasheet] ?...
**5595 Pentium PCI System I/O <12/24/97...
**950 LPC I/O <07/16/99...
**Other:...
**PII/III/Pro...
**Athlon etc...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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