User manual

9 PCA-6011 User Manual
Chapter 1 Hardware Configuration
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1.8.3 Watchdog timer output (JWDT1)
The PCA-6011 contains a watchdog timer that will reset the CPU in the event the
CPU stops processing. This feature means the PCA-6011 will recover from a soft-
ware failure or an EMI problem. The JWDT1 jumper settings control the outcome of
what the computer will do in the event the watchdog timer is tripped.
1.9 System Memory
The PCA-6011 has two sockets for 240-pin dual inline memory modules (DIMMs) in
two memory channels.
All these sockets use 1.5 V unbuffered double data rate synchronous DRAMs (DDR3
SDRAM). They are available in capacities of 512 MB, 1 GB, and 2 GB. The sockets
can be filled in any combination with DIMMs of any size, giving a total memory size
up to 4 GB.
1.9.1 CPU FSB and memory speed
The PCA-6011 can accept DDR3 SDRAM memory chips without parity. Also note:
The PCA-6011 accepts DDR3 800/1066 MHz SDRAM. The PCA-6011 does NOT
support ECC (error checking and correction).
1.10 Memory Installation Procedures
To install DIMMs, first make sure the two handles of the DIMM socket are in the
“open” position. i.e. The handles lean outward. Slowly slide the DIMM module along
the plastic guides on both ends of the socket. Then press the DIMM module right
down into the socket, until you hear a click. This is when the two handles have auto-
matically locked the memory module into the correct position of the DIMM socket. To
remove the memory module, just push both handles outward, and the memory mod-
ule will be ejected by the mechanism in the socket.
Table 1.3: CMOS (CMOS1)
Function Jumper Setting
* Keep CMOS data
Clear CMOS data
* default setting
1-2 closed
2-3 closed
Table 1.4: Watchdog timer output (JWDT1)
Function Jumper Setting
IRQ11
* Reset
*default setting
1
1-2 closed
1
2-3 closed