Chapter 3 Signals and Pinout Tables
32 Reference Manual COM830
VGA_BLU Blue for moni tor. Analog DAC output,
designed to drive a 37.5-Ohm equivalent load. O
Analog
PD 150R Analog output
VGA_HSYN
C Horizontal sync output to VGA monitor O 3.3V
VGA_VSYN
C Vertical sync output to VGA monitor O 3.3V
VGA_I2C_C
K DDC clock line (I²C port dedicated to identify
VGA monitor capabilities) I/O 5V PU 2k2
5V
VGA_I2C_D
AT DDC data line. I/O 5V PU 2k2
5V
Table 3-10. LVDS Signal Descriptions
Signal Description I/O PU/PD Comment
LVDS _A [0: 3]+
LVDS _A [0: 3]- LVDS Channel A differential pairs O
LVDS
LVDS_A_CK+
LVDS_A_CK- LVDS Channel A differential clock O
LVDS
LVDS _B [0: 3]+
LVDS _B [0: 3]- LVDS Channel B differential pairs O
LVDS
LVDS_B_CK+
LVDS_B_CK- LVDS Channel B differential clock O
LVDS
LVDS_VDD_EN LVDS panel power enable O 3.3V PD 10k
LVDS_BKLT_E
N LVDS panel backlight enable O 3.3V
LVDS_BKLT_C
TRL LVDS panel backlight brightness
control O 3.3V
LVDS_I2C_CK DDC lines used for flat panel detection
and control. O 3.3V PU 2k2
3.3V
LVDS_I2C_DAT DDC lines used for flat panel detection
and control. I/O
3.3V PU 2k2
3.3V
Table 3-11. TV-Out Signal Descriptions
Signal Description I/O PU/PD Commen
t
TV_DAC_A TVDAC Channel A Output supports the
following: Composite video: CVBS
Component video: Chrominance (Pb) analog
signal
S-Video: not used
O
Analog
PD 150R Analog
output
Table 3-9. CRT Signal Descriptions (Continued)