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R38 0 E X DATA S H E ET
H I G H - I N T E G R AT I O N I N T E L (R) 3 8 6 P C - C O M P AT I B L E S Y S T E M C O N T R O L L E R WITH SUPPORT FOR EDO DRAM, ISABUS AND POWER MANAGEMENT
PRODUCT OVERVIEW The RadiSys R380EX Embedded System Controller is a member of the RadiSys family of embedded core logic specifically designed to support the Intel386EX processor. Providing the necessary circuitry for a PC-compatible embedded system design, it supplies a simple, low-cost, "glueless" interface to
The power management capabilities of the R380EX include clock source switching, halt detection, SMI event generation, and a programmable clock restart delay to ensure clock frequency settling when restarting the oscillator from a powerdown state. The clock source for the Intel386EX processor can be switched between the R380EX CLK2OSC input and the 32.768KHz real time clock oscillator, thereby reducing the system power consumption. The R380EX has 4 user-programmable I/O chip selects in addition to the Intel386EX processor's chip selects. There are 16 bits of individually programmable digital I/O along with 6 bits of digital output. Additional functional blocks handle the Intel386EX processor halt and shutdown cycles, and control the speaker and external LEDs. The main and alternate functions of many of the pins are controlled through registers within the R380EX.
FEATURE SUMMARY
* * * * * * * * * * * * * * * * * * * * Supports Intel386EX CPU True single-chip ISA implementation DRAM controller, 512KB to 64MB Flash SIMM controller Integrated real-time clock Enhanced IDE interface Keyboard and mouse controller Power management Supports Intel386EX chip DMA Four programmable I/O chip selects 16-bit digital I/O port plus 6-bit output port Supports local bus implementation ROM or flash ROM interface Speaker interface Test mode 5V or 3.3V operation SMI support BIOS shadowing 208-pin PQFP Reference design available
additional chips like a video controller or a PCMCIA controller. The functional design of the R380EX is directly derived from PC architecture. The R380EX includes a DRAM controller, keyboard/mouse controller, real time clock, enhanced IDE interface, and ISAbus controller. The DRAM controller is compatible with both fast-page-mode (FPM) and extended-data-out (EDO) DRAM. It can be configured to support both DRAM SIMMs and flash SIMMs for greater system flexibility. The enhanced IDE interface supports a maximum transfer rate of 8.33MB per second. The ISAbus controller has a separate data bus, and manages the ISA signals to ensure a "quiet" bus for cycles not directed to the ISA address space.
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S P E C I F I C AT I O N S
FEATURE
Processor Support Bus Support
FUNCTION
IDE ISA Serial Ports DMA
DESCRIPTION
Intel386EX EIDE Two included in 386EX Included in 386EX Included in 386EX Two included in 386EX 16-bit Up to six included in 386EX 512KB to 64MB 2MB, 4MB -
ORDERING INFORMATION
Call for pricing and availability. Refer to the order codes below.
I/O Support
Counter/Timer RTC Interrupt Controller Digital I/O I/O Chip Select
DESCRIPTION:
R380EX (ordered in 96 unit lots) ORDER CODE: R380EX-02
Memory Management
Mouse Controller Keyboard Controller DRAM Support Flash Support BIOS Shadowing Power 5V and 3.3V Compatibility Power Management
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World Headquarters 5445 NE Dawson Creek Drive Hillsboro, OR 97124 USA Phone: 503-615-1100 Fax: 503-615-1121 Toll-Free: 800-950-0044 www.radisys.com info@radisys.com
(c)2005 RadiSys Corporation. RadiSys and EPC are registered trademarks of RadiSys Corporation. *All other trademarks are the properties of their respective owners. All specifications within this document are subject to change without notice. 07-1208-02 0105

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