ST STEVAL-CCH002V1 User manual

August 2008 Rev 1 1/29
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 I2C 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.
www.st.com

Contents UM0576
2/29
Contents
1 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Package content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Hardware installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Powering on the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 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 VGA I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.2 S-video I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1.3 CVBS connector (composite video) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.4 Y, Pb, Pr connectors (component video) . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.5 HDMI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.6 DVI connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1.7 RESET button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1.8 DC supply socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 The jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2.1 Demonstrating the STMAV335: VGA active . . . . . . . . . . . . . . . . . . . . . . 11
2.2.2 Demonstrating the STMAV335: S-video and CVBS active . . . . . . . . . . 12
2.2.3 Demonstrating the STMAV335: DVI-I analog active . . . . . . . . . . . . . . . 13
2.2.4 Demonstrating the STMAV340: Y, Pb, Pr active . . . . . . . . . . . . . . . . . . 14
2.2.5 Demonstrating the STMAV340: VGA and CVBS active . . . . . . . . . . . . . 15
2.2.6 Demonstrating the STDVE003A: HDMI IN1 active . . . . . . . . . . . . . . . . 16
2.2.7 Demonstrating the STDVE003A: HDMI IN2 active . . . . . . . . . . . . . . . . 17
2.2.8 Demonstrating the STDVE003A: DVI-I active . . . . . . . . . . . . . . . . . . . . 18
2.2.9 Demonstrating the STHDMI002A: DVI-I active . . . . . . . . . . . . . . . . . . . 19
2.2.10 Demonstrating the STHDMI002A: HDMI-1 active . . . . . . . . . . . . . . . . . 20
Appendix A Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Appendix B Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Appendix C Bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

UM0576 List of figures
3/29
List of figures
Figure 1. HDMI and video switches demonstration board, STEVAL-CCH002V1 . . . . . . . . . . . . . . . . 4
Figure 2. Power supply connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Power-on condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. System stable, ready to use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 5. VGA connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 6. S-video connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 7. RCA jacks for CVBS and Y/Pb/Pr. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 8. HDMI connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Figure 9. DVI connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 10. Placement of DVI and HDMI output connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 11. The RESET button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 12. DC power socket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 13. Jumper settings for VGA input through the STMAV335 . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 14. Jumper settings for S-video and CVBS input through the STMAV335 . . . . . . . . . . . . . . . . 12
Figure 15. Jumper settings for DVI analog through the STMAV335 . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 16. Jumper settings for Y/Pb/Pr input through the STMAV340 . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 17. Jumper settings for VGA and CVBS input through the STMAV340 . . . . . . . . . . . . . . . . . . 15
Figure 18. Jumper settings for HDMI IN1 input through the STDVE003A . . . . . . . . . . . . . . . . . . . . . . 16
Figure 19. Jumper settings for HDMI IN2 input through the STDVE003A . . . . . . . . . . . . . . . . . . . . . . 17
Figure 20. Jumper settings for DVI-I input through the STDVE003A. . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 21. Jumper settings for DVI-I input through the STHDMI002A . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 22. Jumper settings for HDMI IN1 input through the STHDMI002A . . . . . . . . . . . . . . . . . . . . . 20
Figure 23. Schematic (part 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 24. Schematic (part 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 25. Schematic (part 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Getting started UM0576
4/29
1 Getting started
1.1 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)
●Documentation
–Usermanual
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

UM0576 Getting started
5/29
The major components present on the demonstration board are the following (see Figure 1):
1. VGA input connector
2. VGA output connector
3. Backlit LCD, 16 char x 2 line alphanumeric
4. S-video input connector
5. S-video output connector
6. Y, Pb, Pr input connector set
7. Y, Pb, Pr output connector set
8. CVBS input connector
9. 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
Connect the 9V DC adaptor jack to this connector as shown in Figure 2.
Figure 2. Power supply connections
AM00914v1

Getting started UM0576
6/29
At power-on a startup message appears as shown below, and persists for about 2 seconds.
After a short delay, the current state of selection is displayed.
Note: Display may differ from case to case, depending on the state of the jumpers.
1.5 Default setting of the system
The demonstration board is factory-set as STDVE003A DVI-I DIGITAL.
Figure 3. Power-on condition
AM00915v1
Figure 4. System stable, ready to use
AM00916v1

UM0576 Using the HDMI and video switches demonstration board
7/29
2 Using the HDMI and video switches demonstration
board
2.1 The various input/output connectors
Industry-standard connectors with appropriate genders have been provided on the board for
the various video formats supported. Standard interconnects available on the market may
be used during evaluation of the devices. However, the quality of the cables should be
ensured so as not to introduce artifacts within the signal, resulting in apparent degradation
in performance.
2.1.1 VGA I/O
Standard 15-pin female type shell connectors have been provided on the board for the VGA
in/outs. These are similar to PC analog monitor video connectors.
2.1.2 S-video I/O
Shielded 4-pin mini DIN, female industry-standard connectors have been provided for S-
video signals found in DVD players, AV receivers, and laptop outputs
Figure 5. VGA connectors
AM00917v1
Figure 6. S-video connector
AM00918v1

Using the HDMI and video switches demonstration board UM0576
8/29
2.1.3 CVBS connector (composite video)
Female RCA connectors for accepting standard male RCA jacks have been provided for
CVBS in/outs.
2.1.4 Y, Pb, Pr connectors (component video)
A set of three female RCA sockets have been provided. One set is for the input, the other
set for the output.
2.1.5 HDMI connectors
A set of two HDMI connectors has been provided for the input side while another set of two
connectors has been provided for the output side. These are standard type A sockets and
accept commercially available HDMI receptacles.
Figure 7. RCA jacks for CVBS and Y/Pb/Pr
AM00919v1
Figure 8. HDMI connectors
AM00920v1

UM0576 Using the HDMI and video switches demonstration board
9/29
2.1.6 DVI connector
One DVI-I combined analog and digital, female connector has been provided. The output is
routed to any one of the VGA or HDMI connectors, for analog and digital respectively.
It is placed on the bottom side of the demonstration board along with two HDMI output
connectors, as shown below.
Figure 9. DVI connector
Figure 10. Placement of DVI and HDMI output connectors
AM00921v1
AM00922v1

Using the HDMI and video switches demonstration board UM0576
10/29
2.1.7 RESET button
The RESET button actually resets the processor in case it gets "hung up". It does NOT
affect the functionality of the demonstration board, except that the display might become
irrelevant for a moment, after recovering from a RESET.
2.1.8 DC supply socket
A standard adaptor socket has been provided as a power inlet port for the demonstration
board. It is polarity protected to accept a center positive adaptor, e.g. the one supplied with
the demonstration board.
Figure 11. The RESET button
AM00923
v
Figure 12. DC power socket
AM00924v1

UM0576 Using the HDMI and video switches demonstration board
11/29
2.2 The jumpers
There are several jumpers on the board, some of which determine demonstration board
functionality, some may be left as it is, or may be used for signal tracing/factory debugging.
We will start with the essential ones, case by case, as required for demonstrating the
various functions of the demonstration board.
2.2.1 Demonstrating the STMAV335: VGA active
Figure 13. Jumper settings for VGA input through the STMAV335
!-V
34-!6
6'!?).
6'!).
6'!/54
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
*
*
*
34-!6
6'!?).
6'!).
6'!/54
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
*
*
*

Using the HDMI and video switches demonstration board UM0576
12/29
2.2.2 Demonstrating the STMAV335: S-video and CVBS active
Figure 14. Jumper settings for S-video and CVBS input through the STMAV335
!-V
34-!6
36)$%/#6"3
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
3VIDEO). 3VIDEO/54
#6"3).
#6"3/54
*
*
*
34-!6
36)$%/#6"3
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
3VIDEO). 3VIDEO/54
#6"3).
#6"3/54
*
*
*

UM0576 Using the HDMI and video switches demonstration board
13/29
2.2.3 Demonstrating the STMAV335: DVI-I analog active
Figure 15. Jumper settings for DVI analog through the STMAV335
!-V
34-!6
$6))!.!,/'
!.!,/'3%#4)/. 2%3%4
* *
**
*
*
*
*
*
*
6'!/54
34-!6
$6))!.!,/'
!.!,/'3%#4)/. 2%3%4
* *
**
*
*
*
*
*
*
6'!/54

Using the HDMI and video switches demonstration board UM0576
14/29
2.2.4 Demonstrating the STMAV340: Y, Pb, Pr active
Figure 16. Jumper settings for Y/Pb/Pr input through the STMAV340
!-V
34-!6
90B 0R
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
*
*
*
9).
0B ).
0R).
9/54
0B /54
0R/54
34-!6
90B 0R
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
*
*
*
9).
0B ).
0R).
9/54
0B /54
0R/54

UM0576 Using the HDMI and video switches demonstration board
15/29
2.2.5 Demonstrating the STMAV340: VGA and CVBS active
Figure 17. Jumper settings for VGA and CVBS input through the STMAV340
!-V
34-!6
6'!?).#6"3
6'!). 6'!/54
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
*
*
*
#6"3).
#6"3/54
34-!6
6'!?).#6"3
6'!). 6'!/54
!.!,/'3%#4)/. 2%3%4
**
**
*
*
*
*
*
*
#6"3).
#6"3/54

Using the HDMI and video switches demonstration board UM0576
16/29
2.2.6 Demonstrating the STDVE003A: HDMI IN1 active
Figure 18. Jumper settings for HDMI IN1 input through the STDVE003A
!-V
34$6%!
($-)?).
$)')4!,3%#4)/.
*
*
*
*
*
($-)).
($-)/54
34$6%!
($-)?).
$)')4!,3%#4)/.
*
*
*
*
*
($-)).
($-)/54

UM0576 Using the HDMI and video switches demonstration board
17/29
2.2.7 Demonstrating the STDVE003A: HDMI IN2 active
Figure 19. Jumper settings for HDMI IN2 input through the STDVE003A
!-V
34$6%!
($-)?).
$)')4!,3%#4)/.
*
*
*
*
*
($-)). ($-)/54
34$6%!
($-)?).
$)')4!,3%#4)/.
*
*
*
*
*
($-)). ($-)/54

Using the HDMI and video switches demonstration board UM0576
18/29
2.2.8 Demonstrating the STDVE003A: DVI-I active
Figure 20. Jumper settings for DVI-I input through the STDVE003A
!-V
34$6%!
$6))$)')4!,
$)')4!,3%#4)/.
*
*
*
*
*
$6))).
($-)/54
34$6%!
$6))$)')4!,
$)')4!,3%#4)/.
*
*
*
*
*
$6))).
($-)/54

UM0576 Using the HDMI and video switches demonstration board
19/29
2.2.9 Demonstrating the STHDMI002A: DVI-I active
Figure 21. Jumper settings for DVI-I input through the STHDMI002A
!-V
34($-)!
$6))$)')4!,
$)')4!,3%#4)/.
*
*
*
*
*
($-)/54
$6))).
34($-)!
$6))$)')4!,
$)')4!,3%#4)/.
*
*
*
*
*
($-)/54
$6))).

Using the HDMI and video switches demonstration board UM0576
20/29
2.2.10 Demonstrating the STHDMI002A: HDMI-1 active
Figure 22. Jumper settings for HDMI IN1 input through the STHDMI002A
!-V
34($-)!
($-)
$)')4!,3%#4)/.
*
*
*
*
*
($-)/54
($-)).
34($-)!
($-)
$)')4!,3%#4)/.
*
*
*
*
*
($-)/54
($-)).