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**82380 32-bit DMA Controller w/ Integrated Peripherals 02/01/87
***Notes:...
***Info:
The 82380 is a multi-function support peripheral that integrates
system functions necessary in an 80386 environment. It has eight
channels of high performance 32-bit DMA with the most efficient
transfer rates possible on the 80386 bus. System support peripherals
integrated into the 82380 provide Interrupt Control, Timers, Wait
State generation, DRAM Refresh Control, and System Reset logic.
The 82380's DMA Controller can transfer data between devices of
different data path widths using a single channel. Each DMA channel
operates independently in any of several modes. Each channel has a
temp orary data storage register for handling non-aligned data without
the need for external alignment logic.
The 82380 contains several independent functional modules. The foll-
owing is a brief discussion of the components and features of the
82380. E$ch module has a corresponding detailed section later in this
data sheet. Those sections should be referred to for design and
programming information.
82380 Architecture:
The 82380 is comprised of several computer system functions that are
normally found in separate LSI and VLSI components. These include: a
high-performance, eight-channel, 32-bit Direct Memory Access Cont-
roller; a 20-level Programmable Interrupt Controller which is a super-
set of the 82C59A; four 16-bit Programmable Interval Timers which are
functionally equivalent to the 82C54 timers; a DRAM Refresh Cont-
roller; a Programmable Wait State Generator; and system reset
logic. The interface to the 82380 is optimized for high-performance
operation with the 80386 microprocessor.
The 82380 operates directly on the 80386 bus. In the Slave mode, it
monitors the state of the processor at all times and acts or idles
according to the commands of the host. It monitors the address
pipeline status·. and generates the programmed number of wait states
for the device being accessed. The 82380 also has logic to reset the
80386 via hardware or software reset requests and processor shutdown
status.
After a system reset, the 82380 is in the Slave mode. It appears to
the system as an I/O device. It becomes a bus master when it is
performing DMA transfers.
To maintain compatibility with existing software, the registers within
the 82380 are accessed as bytes. If the internal logic of the 82380
requires a delay before another access by the processor, wait states
are automatically inserted into the access cycle. This allows the
programmer to write initialization routines, etc. without regard to
hardware recovery times.
***Versions:...
***Features:...
**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
***Notes:...
**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...
**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)...
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*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
**5571 (Trinity) Pentium PCI/ISA Chipset (75MHz) <12/09/96
***Info:...
***Configurations:...
***Features:
o Supports Intel Pentium CPU and other compatible CPU at
75/66/60/50MHz (external clock speed)
o Supports the Pipelined Address Mode of Pentium CPU
o Supports the Full 64-bit Pentium Processor data Bus
o Supports 32-bit PCI Interface
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
- Integrated 16K bits Dirty Ram
- Supports Pipelined Burst SRAM
- Supports 256 KBytes to 512 MBytes Cache Sizes
- Cache Read/Write Cycle of 3-1-1-1-1-1-1-1 at 66 MHz
o Integrated DRAM Controller
- Supports 3 Banks of FP/EDO SIMMs, or 2 Banks of SDRAM DIMMs
- Supports 2Mbytes to 384Mbytes of main memory
- Supports 256K/512K/1M/2M/4M/16M x N FP/EDO/SDRAM DRAM
- Supports 3V or 5V DRAM.
- Supports Symmetrical and Asymmetrical DRAM.
- Supports 32 bits/64 bits mixed mode configuration
- Supports Concurrent Write Back for FP/EDO DRAM
- Supports Mixed DRAM (FP/EDO/SDRAM) Technology
- Supports CAS before RAS Refresh
- Supports Relocation of System Management Memory
- Programmable CAS# ,RAS#, RAMW# and MA Driving Current
- Fully Configurable for the Characteristic of Shadow RAM (640
KBytes to 1 MBytes)
- Supports FP DRAM 5-3-3-3(-3-3-3-3) Burst Read Cycles
- Supports EDO DRAM 4/5-2-2-2(-2-2-2-2) Burst Read Cycles
- Supports SDRAM 6/7-1-1-1(-2-1-1-1) Burst Read Cycles
- Supports X-1-1-1/X-2-2-2/X-3-3-3 Burst Write Cycles
- Supports 8 Qword Deep Buffer for Read/Write Reordering, Dword
Merging and 3/2-1-1-1 Post write Cycles
- Two Programmable Non-Cacheable Regions
- Option to Disable Local Memory in Non-Cacheable Regions
- Shadow RAM in Increments of 16 KBytes
o Integrated PMU Controller
- Supports SMM Mode of CPU
- Supports CPU Stop Clock
- Supports Break Switch
- Supports Modem Ring Wakeup
- Supports Automatic Power Supply Control
o Provides High Performance PCI Arbiter.
- Supports 3 internal masters and 5 external PCI Masters
- Supports Rotating Priority Mechanism
- Hidden Arbitration Scheme Minimizes Arbitration Overhead.
- Supports Concurrency between CPU to Memory and PCI to PCI.
o Integrated Host-to-PCI Bridge
- Supports Asynchronous/Synchronous 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 8 DW Deep Buffer for CPU-to-PCI Posted Write Cycles
- Supports Pipelined Process in CPU-to-PCI Access
- Supports Advance Snooping for PCI Master Bursting
- Maximum PCI Burst Transfer from 256 Bytes to 4 Kbytes
- Fast back-to-back
o Integrated Posted Write Buffers and Read Prefetch Buffers to
Increase System Performance
- CPU-to-Memory Posted Write Buffer (CTMFF) with 8 QW Deep, Always
Sustains 0 Wait Performance on CPU-to-Memory.
- CPU-to-PCI Posted Write Buffer(CTPFF) with 8 DW Deep
- PCI-to-Memory Posted Write Buffer(PTHFF) with 8 QW Deep, Always
Streams 0 Wait Performance on PCI-to/from-Memory Access
- PCI-to-Memory Read Prefetch Buffer(CTPFF) with 8 QW Deep
o Built-in one 32-bit General Purpose Register
o Integrated PCI-to-ISA Bridge
- Translates PCI Bus Cycles into ISA Bus Cycles
- Translates ISA Master or DMA Cycles into PCI Bus Cycles
- Provides a Dword Post Buffer for PCI to ISA Memory cycles
- Two 32 bit Prefetch/Post Buffers Enhance the DMA and ISA Master
Performance
- Fully Compliant to PCI 2.1
o Enhanced DMA Functions
- 8-, 16- bit DMA Data Transfer
- ISA compatible, and Fast Type F DMA Cycles
- Two 8237A Compatible DMA Controllers with Seven Independent
Programmable Channels
- Provides the Readability of the two 8237 Associated Registers
o Built-in Two 8259A Interrupt Controllers
- 14 Independently Programmable Channels for Level- or Edge-
triggered Interrupts
- Provides the Readability of the two 8259A Associated Registers
o Three Programmable 16-bit Counters compatible with 8254
- System Timer Interrupt
- Generates Refresh Request
- Speaker Tone Output
- Provides the Readability of the 8254 Associated Registers
o Built-in Keyboard Controller
- Hardwired Logic Provides Instant Response
- Supports PS/2 Mouse
- Support Hot Key "Sleep" Function
o Built-in Real Time Clock(RTC) with 256B CMOS SRAM
o Fast PCI IDE Master/Slave Controller
- Fully Compatible with PCI Local Bus Specification V2.1
- Supports PCI Bus Mastering
- Plug and Play Compatible
- Supports Scatter and Gather
- Supports Dual Mode Operation - Native Mode and
Compatibility Mode
- Supports IDE PIO Timing Mode 0, 1, 2 of ANSI ATA Specification
- Supports Mode 3 and Mode 4 Timing Proposal on Enhanced IDE
Specification
- Supports Multiword DMA Mode 0, 1, 2
- Separate IDE Bus
- Two 8x32-bit FIFO for PCI Burst Read/Write Transfers.
o Universal Serial Bus Controller
- Host/Hub Controller
- Two USB ports
o On-Board Plug and Play Support
- One Steerable DMA Channel
- One Steerable Interrupt
- One Programmable Chip Select
o Supports the Reroutibility of the four PCI Interrupts
o Supports Flash ROM
o 480-Pin BGA Package
o 0.5 μm CMOS Technology
**5581/5582 (Jessie) Pentium PCI/ISA Chipset (75MHz) <04/15/97...
**5591/5592/5595 (David) Pentium PCI A.G.P. Chipset <01/09/98...
**5596/5513 (Genesis) Pentium PCI Chipset <03/26/96...
**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...
**SL82C470 'Mozart' 486/386 EISA chipset c:Dec91
***Info:...
***Configurations:...
***Features:...
**SL82C490 'Wagner' 486? [no datasheet] ?...
**SL82C550 'Rossini' Pentium [no datasheet] c:95...
**
**Support Chips:
**SL82C365 Cache Controller (for 386DX/SX) c:91...
**SL82C465 Cache Controller (for 486/386DX/SX) c:91...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...
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