[Home] [This version is outdated, a new version is here]
*Title...
*Search:...
*Read Me/FAQ/General Info...
*_IBM...
*ACC Micro...
**ACC82300   386 AT Chip Set (386DX)                               c88
***Info:
****General:
The ACC  82300 chip set  is designed for  system designers to  build a
high performance 20/25  MHz 386 systems. The ACC  82300 contains three
VLSl chips that can implement a 100% compatible IBM PC/AT system.

The ACC  2500 provides system control  signals, the ACC2300  is a page
interleaved  memory controller,  and the  ACC 2000  is  the integrated
peripherals controller.

The ACC 82300 chip set supports  a local CPU bus, a system memory bus,
and compatible  AT buses. The AT  bus clock is  fixed at 8 MHz  and is
totally  asynchronous to  the CPU  clock to  support compatible  AT bus
timing.

The ACC 82300  chip set operates up to 20/25 MHz  with zero wait state
memory access by using 80ns DRAMs

General Description
The 82300  chip set is designed  for 80386 based  IBM PC/AT compatible
systems. The  82300 supports four  buses as illustrated in  the system
block diagram  [see datasheet].  CPU local  bus (A and  D) is  the bus
between  the 80386,  and address  and data  buffers. DRAM  is accessed
through the  system memory bus (MA  and ID) and controlled  by the ACC
2300. The I/O channel bus (SA and SD) is compatible with the IBM PC/AT
bus and can support both  8-bit and 16-bit devices. The peripheral bus
(PA  and  PD)  interfaces  the  on-board DMA  controller,  timer,  and
interrupt controller.  The local data  bus and system memory  data bus
has a 32-bit data  width. The I/O data bus supports up  to 16 bits and
the peripheral data bus supports 8-bit peripherals.

****ACC 2000 PC/AT integrated Bus & Peripheral Controller:...
****ACC 2300 Page/Page Interleaved Memory Controller:...
****ACC 2500 System Controller:...
***Configurations:...
***Features:...
**ACC82C100  Single-Chip PC/XT Systems-Controller                  c90...
**ACC83000   Model 30 Integrated Chip Set (MCA)                    c88...
**ACC85000/A Model 50/60 Chipset (MCA)                             c88...
**ACC1000    Turbo PC/XT Integrated Bus and Peripheral Ctrl.  04/02/88...
**ACC2036    Single Chip Solution 2036 (286/386SX)              <Jul92...
**ACC2046/ST 486DX/486SX/386DX Single Chip AT                   <Jul92...
**ACC2048    WB 486 Notebook/Embedded Single Chip [no datasheet]     ?...
**ACC2051/NT PCI Single Chip Solution for Notebook Applications    c96...
**ACC2056    ?Pentium 3.3V Notebook               [no datasheet]<Jan96...
**ACC2057    PCI Notebook/Embedded Single Chip    [no datasheet]<Aug96...
**ACC2066NT  486 Notebook/Embedded Single Chip    [no datasheet]     ?...
**ACC2086    486 VL-based System Super Chip Soluti[no datasheet]     ?...
**ACC2087    Enhanced Super Chip (486 Single Chip)              <Aug96...
**ACC2089    486 PCI-based System Super Chip      [no datasheet]     ?...
**ACC2168/GT 32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2178A   32-bit 486 Green System Single Chip  [no datasheet]     ?...
**ACC2268    ?486                                 [no datasheet]     ?...
**ACC????    Maple/Maple-133 486-System-On-Chip   [no datasheet]     ?
***Notes:...
**
**Support Chips:
**ACC2016    Buffer and MUX Logic                                  c96...
**ACC2020    Power Management Chip                                 c92...
**ACC5500    Multifunction I/O Control Chip for PS2 Model 50/60    c88...
**
**Other chips...
*ALD...
*ALi...
*AMD . . . . . . . [no datasheets, some info]...
*Chips & Technologies...
*Contaq  . . . . . [no datasheets, some info]...
*Efar Microsystems [no datasheets, some info]...
*ETEQ...
*Faraday...
*Forex . . . . . . [List only, no datasheets found]...
*Intel...
**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)...
*Logicstar...
*Motorola...
*OPTi...
*PC CHIPS/Amptron/Atrend/ECS/Elpina/etc...
*SIS...
*Symphony...
*TI (Texas Instruments)...
*UMC...
*Unresearched:...
*VIA...
*VLSI...
*Western Digital...
*Winbond...
*ZyMOS...
*General Sources:...