UM0576
User manual
HDMI and video switches using the
STEVAL-CCH002V1 demonstration board
Introduction
This document explains the functioning and operation of the STEVAL-CCH002V1
demonstration board which demonstrates the functionalities of the STMAV335, STMAV340,
STHDMI002A and STDVE003A analog and digital video switches.
The objective of this demonstration board is to display the capabilities of ST's video switches
and buffers and also the appropriate use of signal line protection devices, which have been
exhaustively used in this demonstration board at all I/O lines, whether it is standard analog
or high-speed transition minimized differential signaling (TMDS) digital signals.
Demonstration of the various devices is done by appropriate jumper settings on the
demonstration board, and all necessary I/O interface connectors as applicable for each
signal format are provided. Standard interconnects available in the market can be used to
evaluate the demonstration board.
The demonstration board has a 16 character x 2 line backlit LCD which shows the selection
status and a preprogrammed microcontroller senses all the control signals and
appropriately displays it on the LCD.
The demonstration board may be powered by the 9 V adapter supplied or by a standard 9V
adapter with a current capacity of at least 500 mA. The source need not be regulated. On
board regulators supply +5 V and +3.3 V as required.
To summarize, the STEVAL-CCH002V1 serves to demonstrate the following:
■
■
■
■
■
■
■
■
STMAV335 analog video switch
STMAV340 analog video switch
STHDMI002A HDMI switch
STDVE003A HDMI switch with equalizer/buffer
TSH343 analog buffer
TSH72 analog buffer
ST4300 I
2
C buffer
Various ESD protection devices in the signal I/O ports
The board also demonstrates to a large extent, the recommended PCB layout in end
applications utilizing these devices. Especially critical layout aspects in high-speed HDMI
bus have been carefully addressed in this demonstration board.
August 2008
Rev 1
1/29
www.st.com
Contents
UM0576
Contents
1
Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1
1.2
1.3
1.4
1.5
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Package content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Powering on the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Default setting of the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Using the HDMI and video switches demonstration board . . . . . . . . . . 7
2.1
The various input/output connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
VGA I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
S-video I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CVBS connector (composite video) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Y, Pb, Pr connectors (component video) . . . . . . . . . . . . . . . . . . . . . . . . . 8
HDMI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DVI connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
RESET button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DC supply socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2
The jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
2.2.6
2.2.7
2.2.8
2.2.9
2.2.10
Demonstrating the STMAV335: VGA active . . . . . . . . . . . . . . . . . . . . . . 11
Demonstrating the STMAV335: S-video and CVBS active . . . . . . . . . . 12
Demonstrating the STMAV335: DVI-I analog active . . . . . . . . . . . . . . . 13
Demonstrating the STMAV340: Y, Pb, Pr active . . . . . . . . . . . . . . . . . . 14
Demonstrating the STMAV340: VGA and CVBS active . . . . . . . . . . . . . 15
Demonstrating the STDVE003A: HDMI IN1 active . . . . . . . . . . . . . . . . 16
Demonstrating the STDVE003A: HDMI IN2 active . . . . . . . . . . . . . . . . 17
Demonstrating the STDVE003A: DVI-I active . . . . . . . . . . . . . . . . . . . . 18
Demonstrating the STHDMI002A: DVI-I active . . . . . . . . . . . . . . . . . . . 19
Demonstrating the STHDMI002A: HDMI-1 active . . . . . . . . . . . . . . . . . 20
Appendix A Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Appendix B Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Appendix C Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2/29
UM0576
List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
HDMI and video switches demonstration board, STEVAL-CCH002V1 . . . . . . . . . . . . . . . . 4
Power supply connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Power-on condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
System stable, ready to use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
VGA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
S-video connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
RCA jacks for CVBS and Y/Pb/Pr. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HDMI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
DVI connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Placement of DVI and HDMI output connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
The RESET button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
DC power socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Jumper settings for VGA input through the STMAV335 . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Jumper settings for S-video and CVBS input through the STMAV335 . . . . . . . . . . . . . . . . 12
Jumper settings for DVI analog through the STMAV335 . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Jumper settings for Y/Pb/Pr input through the STMAV340 . . . . . . . . . . . . . . . . . . . . . . . . 14
Jumper settings for VGA and CVBS input through the STMAV340 . . . . . . . . . . . . . . . . . . 15
Jumper settings for HDMI IN1 input through the STDVE003A . . . . . . . . . . . . . . . . . . . . . . 16
Jumper settings for HDMI IN2 input through the STDVE003A . . . . . . . . . . . . . . . . . . . . . . 17
Jumper settings for DVI-I input through the STDVE003A. . . . . . . . . . . . . . . . . . . . . . . . . . 18
Jumper settings for DVI-I input through the STHDMI002A . . . . . . . . . . . . . . . . . . . . . . . . . 19
Jumper settings for HDMI IN1 input through the STHDMI002A . . . . . . . . . . . . . . . . . . . . . 20
Schematic (part 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Schematic (part 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Schematic (part 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3/29
Getting started
UM0576
1
1.1
Getting started
System requirements
The system operates in standalone mode by powering externally using the supplied power
adaptor, or with any general purpose 9 V adaptor with a current rating of 500 mA.
1.2
Package content
The HDMI and video switches demonstration board package includes:
●
Hardware
–
–
One demonstration board, type STEVAL-CCH002V1
One power supply (9 V adaptor)
User manual
●
Documentation
–
1.3
Hardware installation
The demonstration board can be powered through the external power supply adaptor.
Figure 1.
HDMI and video switches demonstration board, STEVAL-CCH002V1
AM00913v1
4/29
UM0576
Getting started
The major components present on the demonstration board are the following (see
Figure 1):
1.
2.
3.
4.
5.
6.
7.
8.
9.
VGA input connector
VGA output connector
Backlit LCD, 16 char x 2 line alphanumeric
S-video input connector
S-video output connector
Y, Pb, Pr input connector set
Y, Pb, Pr output connector set
CVBS input connector
CVBS output connector
10. HDMI input connector set
11. HDMI output connector set
12. DVI-I connector
13. Reset switch
14. Power supply jack
Several jumpers are also visible, but their application/significance is explained in
Section 2.2: The jumpers.
1.4
Powering on the system
As soon as the 9 V DC power supply is plugged in, the system is up and running
Figure 2.
Power supply connections
AM00914v1
Connect the 9V DC adaptor jack to this connector as shown in
Figure 2.
5/29
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