Document
Acer Laboratories Inc.
M512x : Mega I/O Controller with PnP
--Preliminary, Confidential, Proprietary--
M512x : Mega I/O Controller with Plug & Play
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FEATURES n n n
Supports Windows 95 Plug and Play Supports 2 serial/1 parallel/FDC/RTC/KB and PS/2 mouse functions Supports 22 General Purpose I/O pins Enhanced ESD/LATCH up to over 4KV/300 mA Supports SPP, PS/2, EPP, ECP and 1284 compliance Supports 5 GPIO Alternative function pins for Remote Control Supports IR via UART1, UART2 and two additional IR pins Supports Fast Gate A20 and RC functions Supports KBC and RTC enable/disable functions Single-chip Notebook/Desktop solution
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Various modes of Parallel Port Supports ECP/ EPP / PS/2 / SPP and 1284 Compliance - IBM PC/XT, PC/AT and PS/2 compatible Bi-directional parallel port - Enhanced Parallel Port (EPP) compatible - Microsoft and Hewlett Packard Extended Capabilities Port (ECP) compatible
Supports Windows 95 Plug-and-Play Supports 2 Serial / 1 Parallel / FDC / RTC / KB / PS/2 Mouse functions Supports 22 General Purpose I/O pins - 3 GPIO ports (Ports 1, 2, 3) - 5 GPIO-ALT function pins for Remote Control (Pins 30-34) - 2 General Purpose chip select pins (Pins 24-25) - Supports I C Control Pins
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Serial ports - Two high performance 16550 compatible UARTs with send/receive 16-byte FIFOs - Serial Infra Red (SIR) for wireless communications - MIDI (Musical Instrument Digital Interface) compatible
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2.88 MB Floppy Disk Controller - Software compatible with 82077 and supports 16-byte data FIFOs - High performance internal data separator - Supports standard 1 Mbps / 500 Kbps / 300 Kbps / 250 Kbps data rate - Supports 3 modes of 3.5" FDD (720K/1.2M/1.44MB) - Swappable drives A and B n n n n n n n n
High performance Power Management for FDC, UART and Parallel Port Supports XD-To-SD Bus Buffer and Control Pins Supports Enable/Disable KBC and RTC Supports Fast Gate A20 and RC function Supports External KBC programming pin functions Supports additional IrDA and ASK IR Pins Supports Phoenix KBC (M5123), AMI KBC(M5125) 160-pin PQFP package
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Supports FDC through Parallel Port pins Supports AT PS/2 KB and PS/2 Mouse Built-in Keyboard Controller and Real Time Clock
07-02-1997 Document Number: 512xDS02.doc Acer Labs: 7F, 115 Tung Hsing Street, Taipei 110, Taiwan, R.O.C. Tel: 886-(02) 762-8800
Page 1 Fax: 762-6060
--Preliminary, Confidential, Proprietary--
Acer Laboratories Inc.
M512x : Mega I/O Controller with PnP
Table of Contents :
Section 1 : Introduction .............................................................................................................. 3 1.1 Features and Function ................................................................................................ 3 1.2 Block Diagram............................................................................................................ 4 1.3 Register Overview .....................................................................................