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R380EX PDF预览

R380EX

更新时间: 2024-11-06 06:06:23
品牌 Logo 应用领域
其他 - ETC 动态存储器PC
页数 文件大小 规格书
2页 123K
描述
HIGH-INTEGRAION INTEL 386PC-COMPATIBLE SYSTEMCONTROLLER WITH SUPPORT FOR EDO DRAM, ISABUS AND POWER MANAGEMENT

R380EX 数据手册

 浏览型号R380EX的Datasheet PDF文件第2页 
R380EX DATA SHEET  
H I G H - I N T E G R AT I O N I N T E L ® 3 8 6 P C - C O M PAT I B L E SY ST E M C O N T R O L L E R  
W I T H S U P P O R T F O R E D O D R A M , I S A B U S A N D P O W E R M A N A G E M E N T  
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.  
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  
additional chips like a video controller or a  
PCMCIA controller.  
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  
The functional design of the R380EX is  
directly derived from PC architecture.  
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.  
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.  
• Test mode  
• 5V or 3.3V operation  
• SMI support  
BIOS shadowing  
208-pin PQFP  
Reference design available  
1

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