SDVO Design Guide - congatec.com Inter-IC (a two wire serial bus invented by Philips) ... TV-Out. When using a dual ... Order no. FH12-45S-0.5SH (55)

SDVO Design GuideGuidelines for implementing SDVO devices on XTX™, COM Express and Qseven carrier boards.

Design guide

Revision 1.1

Revision HistoryRevision Date (dd.mm.yy) Author Changes0.1 05.06.06 CJR/GDA Preliminary release

1.0 21.03.07 GDA Official release. Added ESD information. Updated table 6 “Validated SDVO Device Descriptions”.

1.1 11.26.10 CJR Added descriptions of the SDVO support on COM Express and Qseven.

Copyright © 2006 congatec AG DG_SDVO_11 2/17

PrefaceThis design guide provides information about the components, features and BIOS/Software support to implement application specific SDVO device design.

DisclaimerThe information contained within this design guide, including but not limited to any product specification, is subject to change without notice.

congatec AG provides no warranty with regard to this user's guide or any other information contained herein and hereby expressly disclaims any implied warranties of merchantability or fitness for any particular purpose with regard to any of the foregoing. congatec AG assumes no liability for any damages incurred directly or indirectly from any technical or typographical errors or omissions contained herein or for discrepancies between the product and the user's guide. In no event shall congatec AG be liable for any incidental, consequential, special, or exemplary damages, whether based on tort, contract or otherwise, arising out of or in connection with this user's guide or any other information contained herein or the use thereof.

Intended AudienceThis design guide is intended for technically qualified personnel. It is not intended for general audiences.

SymbolsThe following symbols are used in this user's guide:

Warning

Warnings indicate conditions that, if not observed, can cause personal injury.

Caution

Cautions warn the user about how to prevent damage to hardware or loss of data.

Note

Notes call attention to important information that should be observed.


Certificationcongatec AG is certified to DIN EN ISO 9001:2008 standard.

Technical Supportcongatec AG technicians and engineers are committed to providing the best possible technical support for our customers so that our products can be easily used and implemented. We request that you first visit our website at www.congatec.com for the latest documentation, utilities and drivers, which have been made available to assist you. If you still require assistance after visiting our website then please contact our technical support department by email at [email protected]

TerminologyTerm DescriptionSDVO Serial Digital Video Output

GMCH Graphics Memory Controller Hub

I2C Inter-IC (a two wire serial bus invented by Philips)

DDC Display Data Channel

DVI Digital Visual InterfaceInterface specified by the Digital Display Working Group (DDWG)

LCD Liquid Crystal Display

CRT Cathode Ray Tube

LFP Local Flat Panel

EFP External Flat Panel

DPMS Display Power Management Signaling (VESA standard)

VESA Video Electronics Standards Association

LVDS Low Voltage Differential Signaling LVDS is a high speed, low power data transmission standard for local flat panels.

HDMI High Definition Media Interface

TV Television

PEG PCI Express Grahpics

BIOS Basic Input Output System


http://www.congatec.com/

mailto:[email protected]

Copyright NoticeCopyright © 2006, congatec AG. All rights reserved. All text, pictures and graphics are protected by copyrights. No copying is permitted without written permission from congatec AG.

congatec AG has made every attempt to ensure that the information in this document is accurate yet the information contained within is supplied “as-is”.

TrademarksI²C is a registered trademark of Philips Corporation. Windows® is a registered trademarks of Microsoft Corporation. VxWorks is a registered trademark of WindRiver. QNX is a registered trademark of QNX Inc. congatec is a registered trademark of congatec AG. All product names and logos are property of their owners.

Electrostatic Sensitive Device All congatec AG products are electrostatic sensitive devices and are packaged accordingly. Do not open or handle a congatec AG product except at an electrostatic-free workstation. Additionally, do not ship or store congatec AG products near strong electrostatic, electromagnetic, magnetic, or radioactive fields unless the device is contained within its original manufacturer's packaging. Be aware that failure to comply with these guidelines will void the congatec AG Limited Warranty.


Contents1 Introduction...................................................................................................................................7

2 Software Support..........................................................................................................................82.1 Supported SDVO Device Types................................................................................................82.2 Firmware Controlled..................................................................................................................82.3 Fix Software SDVO Port Configuration......................................................................................92.4 Software Limitations..................................................................................................................9

3 SDVO Interface Description.......................................................................................................103.1 XTX.........................................................................................................................................103.2 COM Express..........................................................................................................................113.3 Qseven....................................................................................................................................13

4 Reference Schematics of the conga XDVI adapter (XTX)..........................................................14

5 Layout Design Constraints.........................................................................................................15

6 Tested SDVO Devices................................................................................................................16

7 Industry Links.............................................................................................................................17


1 IntroductionSDVO is a digital video interface developed by Intel.

The Intel SDVO port is the second generation of digital video output from compliant Intel Graphics Memory Controller Hubs (GMCH). The electrical interface is based on the PCI Express interface, though the protocol and timings are completely unique. Whereas PCI Express runs at a fixed frequency, the frequency of the SDVO interface is dependent upon the active display resolution and timing.

Essentially, an SDVO port will transmit display data in a high-speed, serial format across differential AC coupled signals. An SDVO port consists of a sideband differential clock pair and a number of differential data pairs.

The SDVO port provides a two-wire point-to-point communication path between the SDVO device and the Intel GMCH. The SDVO control clock and data provide similar functionality to I2C. However unlike I2C, this interface is intended to be point-to-point and will require the SDVO device to act as a switch and direct traffic from the SDVO control bus to the appropriate receiver. Additionally, this control bus will be able to run at faster speeds (up to 1MHz) than a traditional I2C interface would.

The SDVO device accepts this serialized format and then translates the data into the appropriate display format. SDVO devices are third party codecs that utilize the SDVO port as an input and may have a variety of output formats, including DVI, LVDS, HDMI, TV-Out.

When using a dual-channel external transmitter, it will be possible to pair the two SDVO ports in dual-channel mode to support a single digital display with higher resolution and refresh rates.


2 Software Support2.1 Supported SDVO Device Types

The following device types are supported on the SDVO ports.

Table 1 Device Types Description

Device Type DescriptionAnalog CRT VESA DPMS

Analog TV Composite and S-Video output

EFP DVI 1.0 codec with Hot Plug and Power Management

LFP LVDS with Power Management

2.2 Firmware ControlledThe BIOS setup allows the user to select which SDVO device type should be supported. The default selection is DVI device support.

The setup nodes shown below are located in the Graphics Configuration submenu within the congatec BIOS Setup Program on modules that offer the SDVO feature.

Table 2 SDVO Device Selection Options

Feature Options DescriptionSDVO Port B Device None

DVITVCRTLVDS

Select the SDVO device connected to this port.

SDVO Port C Device NoneDVITVCRTLVDS

Select the SDVO device connected to this port.


2.3 Fix Software SDVO Port ConfigurationThe following port and device configuration is considered to be fixed:

Use device I2C bus address 72h for SDVO port C and 70h for SDVO port B.

Use the SDVO I2C GPIO pins:

• pins 38 and 39 of SDVO connector on XTX,

• pins D73 and C73 on COM Express

• pins 150 and 152 on Qseven

for the device I2C and the displays DDC bus.

The table below list the supported port configurations:

Table 3 Supported Port Configuration Descriptions

SDVO B SDVO CDevice Type Selectable in BIOS Setup Program Selectable in BIOS Setup Program

I2C Address 70h 72h

I2C Bus SDVO I2C GPIO pins SDVO I2C GPIO pins

DDC Bus SDVO I2C GPIO pins SDVO I2C GPIO pins

2.4 Software LimitationsIt's important to understand that recent Intel graphics controller software (VBIOS and graphics driver) no longer offer full SDVO support. You must read the congatec module's user's guide that you plan to use to learn about the limitations in terms of SDVO device support. New Intel graphics controller software tends to support only SDVO LVDS and not DVI, CRT and TV.


3 SDVO Interface Description3.1 XTX

The XTX specification does not offer support for SDVO on the four XTX connectors X1-X4. For that reason, most congatec XTX modules supporting SDVO have a separate flat foil connector on the bottom side of the PCB.

Connector and flat foil cable information for the SDVO connector (X6) located on bottom side of the conga-XTX™ modules that support SDVO.

• Connector type Hirose 0.5mm Pitch Bottom Contact TypeOrder no. FH12-45S-0.5SH (55)

• FFC type 45 positions, 30cm length, 0.5mm pitch both ends opposite sidesManufacturer YOUNGSHINOrder No. MCAB45x300B05

Table 4 XTX SDVO Pinout Description

Pin Signal Description I/O1 GND Ground

2 SDVOC_BCLKN Serial Digital Video C clock complement. O

3 SDVOC_BCLKP Serial Digital Video C clock. O

4 GND Ground

5 SDVOC_GREEN# Serial Digital Video C green complement. O

6 SDVOC_GREEN Serial Digital Video C green. O

7 GND Ground

8 SDVOB_BCLKN Serial Digital Video B clock complement . O

9 SDVOB_BCLKP Serial Digital Video B clock. O

10 GND Ground

11 SDVOB_GREEN# Serial Digital Video B green data complement. O

12 SDVOB_GREEN Serial Digital Video B green data. O

13 GND Ground

14 SDVOC_INT# Serial Digital Video input interrupt complement. I

15 SDVOC_INT Serial Digital Video input interrupt. I

16 GND Ground

17 SDVOB_INT# Serial Digital Video input interrupt complement. I

18 SDVOB_INT Serial Digital Video input interrupt. I

19 GND Ground

20 SDVOC_BLUE# Serial Digital Video C blue complement. O


Pin Signal Description I/O21 SDVOC_BLUE Serial Digital Video C blue data. O

22 GND Ground

23 SDVOC_RED# Serial Digital Video C red data complement / alpha complement. O

24 SDVOC_RED Serial Digital Video C red data / SDVO B alpha. O

25 GND Ground

26 SDVOB_BLUE# Serial Digital Video B blue data complement. O

27 SDVOB_BLUE Serial Digital Video B blue data. O

28 GND Ground

29 SDVOB_RED# Serial Digital Video B red data complement. O

30 SDVOB_RED Serial Digital Video B red data. O

31 GND Ground

32 SDVO_FLDSTALL# Serial Digital Video field stall complement. O

33 SDVO_FLDSTALL Serial Digital Video field stall. O

34 GND Ground

35 SDVO_TVCLKIN# Serial Digital Video TV-Out synchronization clock complement. I

36 SDVO_TVCLKIN Serial Digital Video TV-Out synchronization clock. I

37 GND Ground

38 SDVOCTRL_CLK I²C based control signal (Clock) for SDVO device. I/O

39 SDVOCTRL_DATA I²C based control signal (Data) for SDVO device. I/O

40 PWRGOOD PWRGOOD signal O

41 +5V Power supply +5V



44 SDAOUFP1 Custom

45 SDAOUFP2 Custom

3.2 COM ExpressUnlike XTX, the COM Express specification has defined SDVO within its pinout. The SDVO signals are multiplexed with the PCI Express Graphics signals. The frequently used type 2 pinout offers support for two SDVO ports, referred to as port B and C.

Refer to the COM Express specification for details.


Table 5 COM Express SDVO Pinout Description


COM Express SDVO Pin Name Pin Name DescriptionD52 PEG_TX[0]+ SDVOB_RED+D53 PEG_TX[0]-D55 PEG_TX[1]+ SDVOB_GRN+D56 PEG_TX[1]-D58 PEG_TX[2]+ SDVOB_BLU+D59 PEG_TX[2]-D61 PEG_TX[3]+ SDVOB_CK+D62 PEG_TX[3]-D65 PEG_TX[4]+ SDVOC_RED+D66 PEG_TX[4]-D68 PEG_TX[5]+ SDVOC_GRN+D69 PEG_TX[5]-D71 PEG_TX[6]+ SDVOC_BLU+D72 PEG_TX[6]-D74 PEG_TX[7]+ SDVOC_CK+D75 PEG_TX[7]-D78 PEG_TX[8]+ -D79 PEG_TX[8]- -D81 PEG_TX[9]+ -D82 PEG_TX[9]- -D85 PEG_TX[10]+ -D86 PEG_TX[10]- -D88 PEG_TX[11]+ -D89 PEG_TX[11]- -C52 PEG_RX[0]+ SDVO_TVCLKIN+C53 PEG_RX[0]-C55 PEG_RX[1]+ SDVOB_INT+C56 PEG_RX[1]-C58 PEG_RX[2]+ SDVO_FLDSTALL+C59 PEG_RX[2]-C61 PEG_RX[3]+ -C65 PEG_RX[5]+ SDVOC_INT+C66 PEG_RX[5]-C71 PEG_RX[6]+ -C72 PEG_RX[6]- -C74 PEG_RX[7]+ -C85 PEG_RX[10]+ -C86 PEG_RX[10]- -C88 PEG_RX[11]+ -

D73 SDVO_CLK SDVO_I2C_CK

C73 SDVO_DATA SDVO_I2C_DAT

D63 RSVD -D64 RSVD -

Digital Video B red output differential pairSDVOB_REDSerialDigital Video B green output differential pair SDVOB_GRNSerialDigital Video B blue output differential pairSDVOB_BLUSerialDigital Video B clock output differential pairSDVOB_CKSerialDigital Video C red output differential pairSDVOC_REDSerialDigital Video C green output differential pairSDVOC_GRNSerialDigital Video C blue output differential pairSDVOC_BLUSerialDigital Video C clock output differential pairSDVOC_CKSerial

Digital Video TVOUT synchroni-zation clock input differential pairSDVO_TVCLKINSerialDigital Video B interrupt input differential pairSDVOB_INTSerialDigital Video Field Stall input differential pairSDVO_FLDSTALLSerial

Digital Video C interrupt input differential pairSDVOC_INTSerial

SDVO I²C clock line to set up SDVO peripheralsSDVO I²C data line to set up SDVO peripherals

3.3 QsevenThe Qseven specification also implements the SDVO interface. Unlike COM Express, there is only one SDVO port defined.

Table 6 Qseven SDVO Pinout Description

Pin Signal Description I/O131 SDVOB_BCLKP Serial Digital Video clock. O

132 SDVOC_INT Serial Digital Video input interrupt. I

133 SDVOB_BCLKN Serial Digital Video clock complement. O

134 SDVOC_INT# Serial Digital Video input interrupt complement. I

137 SDVOB_GREEN Serial Digital Video green. O

138 SDVO_FLDSTALL Serial Digital Video field stall. O

139 SDVOB_GREEN# Serial Digital Video green complement. O

140 SDVO_FLDSTALL# Serial Digital Video field stall complement. O

143 SDVOB_BLUE Serial Digital Video blue data. O

144 SDVO_TVCLKIN Serial Digital Video TV-Out synchronization clock. I

145 SDVOB_BLUE# Serial Digital Video blue data complement. O

146 SDVO_TVCLKIN# Serial Digital Video TV-Out synchronization clock complement. I

149 SDVOB_RED Serial Digital Video red data. O

150 SDVOCTRL_DATA I²C based control signal (Data) for SDVO device. I/O

151 SDVOB_RED# Serial Digital Video red data complement. O

152 SDVOCTRL_CLK I²C based control signal (Clock) for SDVO device. I/O


4 Reference Schematics of the conga XDVI adapter (XTX)You must ensure that the AS (address select) pin of the SDVO device matches the SDVO port used.

Copyright © 2006 congatec AG DG_SDVO_11.odt 14/17

5 Layout Design ConstraintsIf you design your own SDVO hardware, follow the PCI Express Trace Routing Guidelines described in the XTX™, COM Express and Qseven Design Guides.

Additionally, follow the application notes for the respective SDVO device, which are available from the SDVO device vendor. See product links listed in table 5, section 6.


6 Tested SDVO DevicesIntel states that the following devices are supported by Intel Graphics software:

Table 5 Intel SDVO Supported Device Descriptions

Device Vendor Type LinkCH7021A Chrontel SDTV / HDTV http://www.chrontel.com/products/7021.htm

CH7308A Chrontel LVDS http://www.chrontel.com/products/7308.htm

CH7307C Chrontel DVI http://www.chrontel.com/products/7307.htm

CH7312 Chrontel DVI http://www.chrontel.com/products/7312.htm

CX25905 Conexant DVI-D / TV / CRT http://www.conexant.com/products/entry.jsp?id=112

SiL1364 Silicon Image DVI http://www.siliconimage.com/products/product.aspx?id=2&ptid=1

SiL 1390 Silicon Image HDMI http://www.siliconimage.com/products/product.aspx?id=52&ptid=1

The following SDVO devices have been validated by congatec AG:

Table 6 Validated SDVO Device Descriptions

Device Vendor TypeCH7021A Chrontel SDTV / HDTV

CH7307C Chrontel DVI

CH7312A Chrontel DVI

SiL1364 Silicon Image DVI


http://www.siliconimage.com/products/product.aspx?id=52&ptid=1

http://www.siliconimage.com/products/product.aspx?id=2&ptid=1

http://www.conexant.com/products/entry.jsp?id=112

http://www.chrontel.com/products/7312.htm




7 Industry LinksThe list below provides some useful links to additional information that may be helpful when implementing SDVO designs.

Name Link DescriptionIntel http://developer.intel.com/ SDVO chipset and graphics driver vendor

Chrontel http://www.chrontel.com/ SDVO device vendor

Silican Image http://www.siliconimage.com/ SDVO device vendor

Conexant http://www.conexant.com/ SDVO device vendor

VESA http://www.vesa.org/ Video Electronics Standard Association

DDWG http://www.ddwg.org/ Digital Display Working Group

XTX™ http://www.xtx-standard.org/ XTX™ consortium

COM Express http://www.picmg.org/ PICMG consortium responsible for the COM Express specification

Qseven http://www.qseven-standard.org/ Qseven consortium


http://www.xtx-standard.org/



http://www.ddwg.org/

http://www.vesa.org/

http://www.conexant.com/

http://www.siliconimage.com/

http://www.chrontel.com/

http://developer.intel.com/

SDVO Design Guide - congatec.com Inter-IC (a two wire serial bus invented by Philips) ... TV-Out. When using a dual ... Order no. FH12-45S-0.5SH (55)

Documents