CPU speed
The XE–700 is switch selectable to run at 66 and 133 MHz. Switch 3 selects the
lower or upper frequency for the clock speed.
Table 16
−
2 CPU clock speed switch, Switch 3
CPU clock speed switch, Switch 3
Position
Setting
66/133 CPU speed
1 Off*
2 On*
133 MHz
3 Off*
1 On
2 Off
66 MHz
3 On
CPU fan
The XE–700 can use an optional cooling fan on the CPU. The fan runs continuously
when power is applied to the card. Note that this connector is not loaded on the
standard XE–700.
Table 16–3 J10 – CPU fan connector
J10 – CPU fan connector
Pin #
Pin Name
1 GND
2 +5V
3 nc
LEDs
The XE–700 has three on-board LEDs, in addition to the LEDs on the Ethernet
connector. See page
for the location of the LEDs.
CR1 is a power on LED. This indicates the system is powered.
CR2 contains an amber and a green LED. The amber is an activity indicator for the
CompactFlash. The green is an activity indicator for the secondary IDE drive
devices (hard drive, CD ROM, etc.)
CR6 is a bicolor User LED. The amber LED is connected to GPIO16 of the 83977,
and the green LED is connected to GPIO15 of the 83977. These GPIOs are located
at address A0, bits 5 and 6. CR6 is also used by the BIOS during booting to indicate
the status of the boot process.
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