
14
Board Layout
Chapter 3
Embedded and Industrial Computing
Clear CMOS (JBAT1)
Front Panel Connector (JFP1)
Multi-purpose Connector (JCN3)
Pin No. Signal
1-2 Normal (default)
2-3 Clear CMOS
Pin No. Signal Function Pin No. Signal Function
1 EXT_PWRBTN# Power
Button
7 +5V HDD LED
2 GND 8 SATA_LED#
3 SYS_RERST# Reset 9 EXT_PWRBTN# Short = AT
Open = ATX
4 GND 10 AT_BN
5 +5V Power
LED
11 CASEOPEN# Case Open
6 GND 12 GND
LCD Inverter Connector (JBKL1)
Signal Description of JBKL1
Floppy connector (FDC1)
1
2
5
Pin No. Signal
1 +12V_BKL
2 GND
3 BKLEN
4 LVDS_BKLT_CTRL/PWM
5 +5V
Signal Function
LVDS_BKLT_CTRL when LVDS_BKLT_CTRL is controlled by JVR1
header, Vadj = 0.75V ~ 4.25V (Recommended:
4.7KΩ, >1/16W)
BKLEN LCD backlight ON/OFF control signal
2
1
Pin No. Signal Pin No. Signal
1 GND 2 DRVDEN0
3 GND 4 NC
5 6 NC
7 GND 8 INDEX#
9 GND 10 MOA#
11 GND 12 NC
13 GND 14 DSA#
15 GND 16 NC
17 GND 18 DIR#
19 GND 20 STEP#
21 GND 22 WD#
23 GND 24 WE#
25 GND 26 TRAK0#
27 GND 28 WP#
29 GND 30 RDATA#
31 GND 32 HEAD#
33 GND 34 DSKCHG#
3 2 1
1
Pin No. Signal Pin No. Signal
1 SER0_TX 2 SER0_RX
3 SER1_TX 4 SER1_RX
5 SLEEP# 6 GND
7 LID# 8 GND
9 PP_TPM 10 GND
11 PP_TPM 12 +3VSB
2
1
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