Chapter 6: CompactFlash, SDRAM, and battery backup
Description
The 5266 is shipped with a PLCC boot flash that contains the BIOS.
The memory socket can accept a single PC2700 or PC3200 DDR SO–DIMM module
up to 1 GB.
A battery backup connector is provided at J3 for an AT battery to back up the real
time clock.
CompactFlash
The CompactFlash socket supports 3.3 V devices. The CompactFlash appears to the
system as an IDE device. It should be automatically detected and configured as a
hard drive during bootup (see “Setup configurations for CompactFlash” below.) To
configure the 5266 to boot from a CompactFlash, refer to the following section
“Creating a Bootable CompactFlash.”
The CompactFlash shares the Primary IDE channel with a 44-pin IDE connector.
SW2 position 1 configures the CompactFlash as a master or a slave device. If only
one IDE device is connected it must be configured as a master. If two devices are
connected, one must be configured as a master and one as a slave. Table 6–1 shows
the settings for SW2.
Note
Octagon Systems only recommends Industrial Grade CompactFlash (NAND
technology) that implements ECC error code correction, and wear level technology.
Table 6–1
CompactFlash, UDMA, RS485 termination switch, SW2
Position Name
On
(default)
Off
1
CF M/S
Slave
Master *
2
UDMA66 EN
UDMA33 limited *
UDMA66 capable
3
RS485 TX
Terminated *
Unterminated
4
RS485 RX
Terminated *
Unterminated
* default
Setup configurations for CompactFlash
Setup offers several configurations for a CompactFlash installed in IDE 0 or IDE 1.
The applicable selections are Physical, LBA, and Phoenix.
A CompactFlash that is formatted on a 5266 will be recognized at boot; however, a
CompactFlash that is formatted on a host machine might not be recognized,
depending on the BIOS of the host machine. If the 5266 will not boot from a
CompactFlash, change the configuration to Physical or Phoenix and reboot.
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Содержание 5266
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Страница 20: ...Figure 2 3 5266 dimensions inches 20 ...
Страница 21: ...Figure 2 4 5266 dimensions mm 21 ...