Toradex Apalis Series - 2.9 Analogue VGA

Apalis Carrier Board Design Guide
Toradex AG l Altsagenstrasse 5 l 6048 Horw l Switzerland l +41 41 500 48 00 l www.toradex.com l info@toradex.com
Page | 44
Figure 40: HDMI reference schematic
2.8.3 Unused HDMI/DVI Signal Termination
All unused HDMI/DVI signals can be left unconnected. The HPD has a 100kΩ pull-down resistor on
the module.
Apalis
Pin
Apalis
Signal Name
Recommended Termination
240
HDMI1_TXC+
Leave NC if not used
242
HDMI1_TXC-
Leave NC if not used
234
HDMI1_TXD0+
Leave NC if not used
236
HDMI1_TXD0-
Leave NC if not used
228
HDMI1_TXD1+
Leave NC if not used
230
HDMI1_TXD1-
Leave NC if not used
222
HDMI1_TXD2+
Leave NC if not used
224
HDMI1_TXD2-
Leave NC if not used
220
HDMI1_CEC
Add pull-up resistor or disable the CEC function in software
232
HDMI1_HPD
Leave NC if not used, 100kΩ resistor on Apalis module
205
I2C2_SDA
Add pull-up resistor or disable the I
2
C function in software
207
I2C2_SCL
Add pull-up resistor or disable the I
2
C function in software
Table 18: Unused HDMI/DVI signal termination
2.9 Analogue VGA
2.9.1 VGA Signals
Apalis
Pin
Apalis
Signal Name
I/O
Type
Power
Rail
Description
208
VGA1_R
O
Analogue
Analogue red video (0 to 0.7V)
210
VGA1_G
O
Analogue
Analogue green video (0 to 0.7V)
212
VGA1_B
O
Analogue
Analogue blue video (0 to 0.7V)
214
VGA1_HSYNC
O
CMOS
3.3V
Horizontal sync
216
VGA1_VSYNC
O
CMOS
3.3V
Vertical sync
205
I2C2_SDA
I/O
OD
3.3V
I
2
C interface for reading the extended display identification data
(EDID) over DDC. This interface is shared with other display
interfaces
207
I2C2_SCL
O
OD
3.3V
Table 19: VGA signals
HDMI1_HPD_MXM3
10KR3
220pF 50V
C2
GND
PLACE D1, D2, D3 NEAR THE DVI-I CONNECTOR
SHIELD
MM70-314-310B1
HDMI1_CEC
220
Apalis - HDMI
24 of 25
HDMI1_TXC-
242
HDMI1_TXC+
240
HDMI1_TXD0-
236
HDMI1_TXD0+
234
HDMI1_HPD
232
HDMI1_TXD1-
230
HDMI1_TXD1+
228
HDMI1_TXD2-
224
HDMI1_TXD2+
222
X1X
HDMI1_HPD
HDMI1_TXC_N
HDMI1_TXC_P
HDMI1_TXD0_N
HDMI1_TXD0_P
HDMI1_TXD1_N
HDMI1_TXD1_P
HDMI1_TXD2_N
HDMI1_TXD2_P
RCLAMP0504S
D3
SHIELD
RCLAMP0504S
D4
SHIELD
HDMI1_TXD2_N
HDMI1_TXD2_P
HDMI1[0..8]
V_DISP
1nF50V
C1
GND
PCA9306DCTT
GND
1
VREF1
2
SCL1
3
EN
8
SDA1
4
SDA2
5
SCL2
6
VREF2
7
IC1
GND
R4
100K
100nF
16V
C4
GND
R6
1.8K
R5
1.8K
500mA
220R@100MHz
L1
500mA
220R@100MHz
L2
4.7pF
C6
4.7pF
C5
R7
1.8K
R8
1.8K
GND
I2C2_SCL
I2C2_SDA I2C2_DDC_SDA_C
I2C2_DDC_SCL_C
100nF
16V
C3
I2C2_DDC[0..1]
3.3V_SW
22R
R10
22R
R12
MXM3_205
MXM3_207
MM70-314-310B1
Apalis - Display DDC
25 of 25
I2C2_SDA
205
I2C2_SCL
207
X1Y
I2C2_SDA
I2C2_SCL
22R
R9
22R
R11
5V_SW V_DISP
I2C2_DDC_C[0..1]
RCLAMP0504S
D5
SHIELD
BAT54
D6
V_DISP5V_SW
TDMS_D2P
1
TDMS_D2_Shield
2
TDMS_D2N
3
TDMS_D1P
4
TDMS_D1_Shield
5
TDMS_D1N
6
TDMS_D0P
7
TDMS_D0_Shield
8
TDMS_D0N
9
TDMS_CLKP
10
TDMS_CLK_Shield
11
TDMS_CLKN
12
CEC
13
HEC
14
DDC_SCL
15
DDC_SDA
16
GND
17
PWR_5V_50mA
18
HotPlug_HECDP
19
SH1
SH1
SH2
SH2
SH3
SH3
S4H
SH4
1747981-1
X2
HDMI
GND
GND
GND
GND
HDMI1_TXD1_N
HDMI1_TXD1_P
HDMI1_TXD0_N
HDMI1_TXD0_P
HDMI1_TXC_N
HDMI1_TXC_P
HDMI1_HPD
I2C2_DDC_SDA_C
I2C2_DDC_SCL_C
GND
HDMI1_CEC_C
BAT54
D1
BAT54
D2
1%
162K
R2
1%32.4K
R1
T1
3.3V_SW
HDMI1_CEC_CHDMI1_CEC