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**M1541/42/33/43 Aladdin V & V+ 50-100MHz ?
***Info:
****M1541/1542 AGP/CPU-to-PCI bridge/Memory/Cache and Buffer Ctrl.:...
****M1543/C PCI-to-ISA Bus Bridge with Super I/O & Fast IR:
The M1543C is a high integration bridge between PCI and ISA bus,
providing full PCI and ISA compatible functions. The M1543C has
integrated the following functions :
(1) Super I/O with Fast IR : 1 Floppy Disk Controller, 1 Parallel
Port, 2 Serial Ports, 1 Dedicated Pins of COM Port for Infrared
Transmission to support IrDA 1.0 (SIR), IrDA 1.1 (MIR and FIR),
and Sharp-IR specification.
(2) System Peripherals (ISP) (2 x 82C59, 1 x 82C54), advanced features
(Type F) in the DMA controller (2 X 82C37).
(3) Serial Interrupt & Distributed DMA protocol support.
(4) 2 Steerable IRQs and 1 Programmable Chip Select for Plug-and-Play
Support.
(5) 2-channel dedicated IDE Master Controller with Ultra-33
specification.
(6) The ACPI (Advanced Configuration and Power Interface)
specification support.
(7) Deep flexible green function and provides the best solution for
the best green system.
(8) PS2 Keyboard/Mouse controller with Hotkey support.
(9) System Management Bus (SMB).
(10) 3 OpenHCI 1.0a USB ports for best AGP system support.
(11) Dedicated and extended GPIO signals support.
(12) PCI 2.1 (Delayed Transaction & Passive Release) specification
support.
M1543C can connect to the ALi Pentium North Bridge (M1521/M1531/M1541)
and also the ALi Pentium II North Bridge (M1621) to provide the best
system solution. The following includes more function description.
The built-in Mega I/O in M1543C is the most advanced Super I/O
controller solution to basic IBM PC, XT, AT peripherals. It
incorporates three full function universal asynchronous receiver/
transmitters (UARTs) (Two for COM1/COM2 and One is dedicated for IR
support), a Parallel Port with various mode support, and a Floppy Disk
Controller (FDC) incorporating high performance internal data
separator with send/receive 16 bytes FIFOs. The serial ports support
two high performance 16450/16550 compatible UARTs with send/receive 16
bytes FIFOs and a programmable baud rate generator. For the complete
system architecture and specification, M1543C has the dedicated pins
and COM port for the IR support, which means, the motherboard still
can support two serial ports outside and have the IR support at the
same time. The wireless communications supported by M1543C includes
IrDA 1.0 (SIR), IrDA 1.1 (MIR and FIR), and Sharp-IR. The Parallel
Port features basic functions such as standard mode, enhanced mode,
and high speed mode and is compliant to SPP, PS/2, EPP, ECP, and 1284
standard. The Parallel Port also includes protection circuit against
damage caused when printer is powered up, or is operated at higher
voltages. The Floppy Disk Controller can support up to 1 Mbps data
transfer, threemode driver, and swappable drives A & B. Furthermore,
M1543C also has high performance power management for FDC, UARTs and
Parallel Port to meet green requirement.
One eight byte bi-directional line buffer is provided for ISA/DMA
Master memory read/write. One 32-bit wide posted write buffer is
provided for PCI memory write & I/O write (for Audio) cycles to the
ISA bus. M1543C also provides a PCI to ISA IRQ routing table, and
level to edge trigger transfer. Furthermore, M1543C supports Serial
Interrupt and Distributes DMA for Open Architecture Specification.
The chip provides 2 extra IRQ lines and 1 programmable chip select for
motherboard Plug-and-Play functions. The interrupt lines can be routed
to any of the available ISA interrupts.
The on-chip IDE controller supports two separate IDE connectors for up
to 4 IDE devices providing an interface for IDE hard disks and CD
ROMs. The Ultra DMA specification (which supports the 33M bytes per
second transfer rate) has been implemented in this IDE controller. The
ATA bus pins & the smart deep Buffer (16 x 32-bit Read Ahead and
Posted Write) are all dedicated for separate channel to improve the
reliability and the performance of IDE Master. Dedicated Pins and
Buffers are also the best implementation for today’s concurrent OS and
application to reduce overhead and achieve the best performance. The
IDE controller also supports Tri-state IDE signals for Swap Bay
support.
The M1543C supports Super Green for Intel and Intel compatible
CPUs. It implements SMI or SCI (System Controller Interrupt) to meet
the ACPI specification. It also meets the requirement for Microsoft’s
OnNow Design Initiative. The M1543C supports powerful power management
for power saving including On, Standby, Sleeping, Suspend, Soft Off,
Mechanical Off state. To control the CPU power consumption, it
provides CPU clock control (STPCLKJ). The STPCLKJ can be active (low)
or inactive (high) in turn by throttling control. Also, the M1543C can
support the most flexible system clock design : it can be programmed
to stop the CPU Clock, and PCI Clock. The PBSRAM (Pipelined Burst
SRAM) doze mode is also supported.
The M1543C is a highly integrated chip including PS2 Keyboard/Mouse
with Hotkey support, SM Bus, 3 OpenHCI 1.0a USB ports (One can be used
for AGP slot, and the other two for external connections), and the
dedicated and extended GPIO (General Purpose Input/Output)
pins. M1543C supports the Hotkey function in the keyboard. Users can
define the special function key to make the system entering or leaving
different operation mode, for example, put the system into sleep or
wake up the system, even force the system into Soft-Off mode. For the
best AGP system implementation, M1543C has a dedicated USB port to
connect to AGP slot and supports two AGP IRQ inputs to route to any
available ISA interrupt pins. Also, for the more demanding GPIO pins
in modern motherboard design, M1543C supports extended GPIO pins
through external logic. It can extend up to 16 GPI signals and 16 GPO
signals. For the best system performance, M1543C supports all the PCI
2.1 specification including Delayed Transaction & Passive Release. The
system designer can use this chip to implement the best green and
cost/performance system.
***Configurations:...
***Features:...
**M1561/43/35D Aladdin 7 ArtX [no datasheet, some info] 11/08/99...
**M6117 386SX Single Chip PC <97...
**
**Support Chips:
**M1535/D South Bridge ?...
**
**May not exist:...
**Later Chipsets:...
**Other:...
*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)...
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