Kontron CP3002, User Manual

Page: 64 / 152

Functional Description CP3002
Page 2 - 26 ID 1042-9252, Rev. 2.0
P R E L I M I N A R Y
General Purpose Inputs/Outputs
Alternatively, the following GPIO signals are available instead of the COMB signals if pin D4 on
the rear I/O connector J2 (GPIO_CFG0) is set to 0.
VGA Interface
VGA signals are available either on the front VGA connector, J6, or on the rear I/O interface
due to the implemented switch on the CP3002. Switching over from front to rear I/O or vice
versa is effected using the uEFI BIOS or the board-specific Control Register 0 (0x282), bit 7-6
(default: front I/O).
Table 2-19: GPIO Signal Description
PIN on J2 SIGNAL FUNCTION DRIVEN BY SIGNALING VOLTAGE
B10 GPO0 General purpose output 0 CP3002 LVTTL (3.3V)
B17 GPI0 General purpose input 0 Rear I/O module LVTTL (3.3V)
D18 GPI1 General purpose input 1 Rear I/O module LVTTL (3.3V)
C14 GPO1 General purpose output 1 CP3002 LVTTL (3.3V)
B7 GPI2 General purpose input 2 Rear I/O module LVTTL (3.3V)
C11 GPI3 General purpose input 3 Rear I/O module LVTTL (3.3V)
D10 GPO2 General purpose output 2 CP3002 LVTTL (3.3V)
C13 GPI4 General purpose input 4 Rear I/O module LVTTL (3.3V)
Note ...
The pins for the GPIO interface (pins B17, B10, B7, C14, C13, C11, D18, and
D10) tolerate only 3.3 V signaling and their inputs (driven by the rear I/O mod-
ule) have internal pull-up resistors.
Table 2-20: VGA Signal Description
PIN on J2 SIGNAL FUNCTION DRIVEN BY SIGNALING VOLTAGE
C10 VGA_RED VGA analog red signal CP3002 Analog
C6 VGA_GREEN VGA analog green signal CP3002 Analog
C8 VGA_BLUE VGA analog blue signal CP3002 Analog
C9 VGA_HSYNC VGA horizontal synchroniza-
tion signal CP3002 LVTTL (3.3 V)
C5 VGA_VSYNC VGA vertical synchronization
signal CP3002 LVTTL (3.3 V)
C4 VGA_DDC_CLK Monitor control clock signal CP3002 TTL (5 V)
C7 VGA_DDC_DATA Monitor control data signal Bidirectional TTL (5 V)
Note ...
On the rear I/O, the CP3002 provides 150

termination resistors for the red,
green and blue VGA signals. Thus, further 150

termination resistors are
necessary on the rear I/O module to reach the required 75

termination for
the VGA connection.