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6WMM7/6WMM7-1
GN: Green Function Switch
Open : Normal operation
Short : Entering Green Mode
GD: Green LED
1
PIN 1 : LED anode (+)
PIN 2 : LED cathode (
3.4. DRAM INSTALLATION
The main board can be installed with 16 / 32 / 64 / 128 / 256 MB 168 pins
DIMM module DRAM, and the DRAM speed must 100 MHz for SDRAM
when system bus speed is set to 66MHz or 100MHz, the DRAM memory
system on main board consists of bank 0 and bank 1.
Since 168 pins DIMM module is 64 bits width, therefore 1 piece of DIMM
module may match a 64 bits system. The total memory size is 16 MB ~
512MB SDRAM . The DRAM installation position refer to Figure 3.1, and
notice the Pin 1 of DIMM module must match with the Pin 1 of DIMM socket.
Insert the DIMM module into the DIMM socket at Vertical angle. If there is a
wrong direction of Pin 1, the SDRAM DIMM module could not be inserted
into socket completely.
3.5. CPU SPEED SETUP
The system bus frequency can be switched between 66MHz and 100MHz by
adjusting JP1. The CPU Frequency is control by BIOS.
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3-8
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