Copyright © 2006 congatec AG
C800m10
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Table 12 TV-Out Signal Descriptions
Signal
Description
I/O
PU/PD
Comment
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
TV_DAC_B
TVDAC Channel B Output supports the following: Composite video: not used
Component video: Luminance (Y) analog signal
S-Video: Luminance analog signal
O Analog
PD 150R
Analog output
TV_DAC_C
TVDAC Channel C Output supports the following: Composite video: not used
Component: Chrominance (Pr) analog signal
S-Video: Chrominance analog signal
O Analog
PD 150R
Analog output
Table 13 Miscellaneous Signal Descriptions
Signal
Description
I/O
PU/PD
Comment
I2C_CK
General purpose I²C port clock output
O 3.3V
PU 4k7 3.3V
I2C_DAT
General purpose I²C port data I/O line
I/O 3.3V
PU 4k7 3.3V
SPKR
Output for audio enunciator, the “speaker” in PC-AT systems
O
BIOS_DISABLE#
Module BIOS disable input. Pull low to disable module BIOS. Used to allow off-
module BIOS implementations.
I
PU 4k7 3.3V
WDT
Output indicating that a watchdog time-out event has occurred.
I 3.3V
PU 10k 3.3V
KBD_RST#
Input to module from (optional) external keyboard controller that can force a
reset. Pulled high on the module. This is a legacy artifact of the PC-AT.
I
Not supported
KBD_A20GATE
Input to module from (optional) external keyboard controller that can be used
to control the CPU A20 gate line. The A20GATE restricts the memory access
to the bottom megabyte and is a legacy artifact of the PC-AT. Pulled low on the
module.
I
Not supported
Table 14 General Purpose I/O Signal Descriptions
Signal
Description
I/O
PU/PD
Comment
GPO[0:3]
General purpose output pins. Pulled high internally on the module.
O
PU 10k 3.3V See note below
GPI[0:3]
General purpose input pins. Pulled high internally on the module.
I
PU 10k 3.3V See note below
Note
For more information about the GPIOs available on the conga-CLX contact congatec technical support.
