rtd cpuModule CMX147786HX, Руководство пользователя

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CMX147786HX RTD Embedded Technologies, Inc.
7
Watchdog Timer
• Selectable reset time-out of 2sec, 1sec, 0.75 sec., 0.50 sec.
• Can generate an interrupt after 1sec, 0.75 sec., 0.50 sec., 0.25 sec.
• Watchdog Refresh and Active registers are accessible from Window
Fail-safe Boot ROM
• Surface mount Flash chip that holds ROM-DOS
™
• Provides an operating system with nothing else attached
Solid State Disk Socket
• SSD socket can hold one of the following Conventional SSD devices or BIOS Extension
Devices.
(*) Larger devices may be available in the future.
Peripherals
• Two serial ports software configurable for RS232/422/485
• Baud rates from 50 to 115200 baud.
• Parallel port with SPP, ECP, EPP capability and selectable interrupts and DMA channel
• PC/AT standard keyboard port
• A PS/2 mouse port
• PC speaker port
• Real Time Clock (requires user-supplied external battery for date and time backup)
BIOS
• RTD Enhanced Award BIOS
• Directly supports Solid State Disk (SSD) and M-Systems’ DiskOnChip®
• User-configurable using built-in Setup program
• Nonvolatile configuration without a battery
• Can boot from floppy disk, hard disk, Solid State Disk, fail-safe boot ROM, or USB.
Connections
Table 1: SSD Conventional Devices
Device Full Read/Write
Access 128Kbytes 256Kbytes 512Kbytes 1Mbyte
Atmel 5V Flash yes yes yes yes no
SRAM yes yes no yes no
NOVRAM yes yes no yes no
EPROM Read Only yes yes yes yes
AMD 5V Flash Read Only yes no yes no
Table 2: SSD BIOS Extension Devices
Device Full Read/Write
Access Maximum Number per
cpuModule Sizes
DiskOnChip®
2000 yes 1 16MB -
1GB *