USER NOTE: PCA
Contents
1. Table 2 6 LVDS Panel Power Select Pin Function 1 2 default 5 V 2 3 3 3 V UN 13 Chapter 2 Installation OUT DX AL MOV DX 2FH MOV AL H Put the output value into AL OUT DX AL MOV DX 2EH MOV AL AAH OUT DX AL A 2 Watchdog programming The PCA 6775 is equipped with a watchdog timer that resets the CPU or generates an interrupt if processing comes to a standstill for any reason This feature ensures system reliability in industrial standalone or unmanned environments Below is a sample of programming code for controlling the Watchdog Timer function A 2 1 Example Program MOV DX 440h I O port 440h for Watchdog MOV AL OAAh Initialize Watchdog by outputting DAAh to Watchdog I O port 440h two times OUT DX AL OUT DX AL OUT DX Oxh Set Oxh as the Watchdog time period Set 00h to disable Watchdog PCA 6775 User Manual UN 54 Page 55 intentionally blank UN 55 Appendix A2. USER NOTE PCA 6775 Manual Edition 1 PN 200K677511 Oct 2007 Please replace the following pages in your PCA 6775 User Manual edition 1 with the attached pages from this user note We apologize for any inconvenience Advantech will address these issues as soon as possible If you have any further questions or con cerns feel free to contact your Advantech sales representative at any time Affected sections Packing List p ili 2 1 Jumpers p 8 2 6 Clear CMOS J4 p 12 2 8 Power Select J3 p 13 A 2 Watchdog Programming p 54 55 Trusted ePlatform Services AD ANTECH PCA 6775 User Note Packing List Before you begin installing your card please make sure that the fol lowing materials have been shipped e 1 PCA 6775 Series Half sized single board computer e 1 Startup manual e 1 CD for utility drivers e 1 Power cable and manual in PDF format p n 1 700002343 e 1 Y cable for PS 2 Keyboard PS 2 Mouse p n 1700060202 e 1 FDD cable e 1 Printer port cable p n 1701340603 p n 1700260250 e 1 COM port cable RS232 422 485 p n 1701140201 e 1 EIDE HDD cable e 1 SIDE HDD cable e USB cable with 2 ports Jumper Pack p n 1701400452 p n 1701440500 p n 1703100260 p n 9689000002 If any of these items are missing or damaged contact your distributor or sales representative immediately Model No List PCA 6775F LOALE PCA 6775F QOAIE PCA 67753F LOA1E PCA 67753F QOAIE Descript
3. ion ISA VIA Mark 533 MHz Slot SBC w 1LAN 128 MB on board Memory LVDS CFC ISA VIA Mark 800 MHz Slot SBC w 1LAN LVDS CFC ISA VIA Mark 533 MHz Slot SBC w 3LAN LVDS CFC ISA VIA Mark 800 MHz Slot SBC w 3LAN LVDS CFC UN iii 2 1 Jumpers The PCA 6775 has a number of jumpers that allow you to configure your system to your application The table below lists the functions of the various jumpers Table 2 1 Jumpers Function LVDS Panel Power Select COM2 function selection Power Clear CMOS Jumper PCA 6775 User Manual UN 8 2 6 Clear CMOS J4 Warning To avoid damaging the computer always turn off the power supply before setting Clear CMOS Before turning on the power supply set the jumper back to 3 0 V Battery On This jumper is used to erase CMOS data and reset system BIOS information The procedure for clearing CMOS is 1 2 d 4 Turn off the system Short pins 2 and 3 briefly Return jumper to pins 1 and 2 Turn on the system The BIOS is now reset to its default setting Table 2 3 Clear CMOS J4 Clear CMOS Default BAT Clear CMOS 1 2 3 1 2 3 PCA 6775 User Manual UN I2 2 7 COM2 RS 232 422 485 Select J2 Table 2 4 COM2 RS 232 422 485 Select 1 2 default RS 232 3 4 RS 422 5 6 RS 485 2 8 Power J3 Table 2 5 Power Pin Function 1 2 Reserved Do not use 2 3 default Enabled 2 9 LVDS Panel Power Select J1
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