1. HDMI Madhav Achar, Patrick D’Agostino, and Arthur Rajala EECS 373 March 2014 University of Michigan 1

2. Purpose Protected data transmission Real world embedded systems Future coursework: 473 2 http://store.jvc.com/images/product/HDMI-HDMIMINI.JPG

4. What is HDMI? ●High Definition Multimedia Interface ○ Audio/video transmission Video uncompressed Audio compressed or uncompressed ●By 2013, over 3 billion HDMI devices sold ○ Surpassed DVI in 2008 [1] ●Possible alternative for 373 projects ○ No HDMI port on Smartfusion boards ○ Raspberry Pi, Arduino TRE, BeagleBoard 3

5. Technical Specifications HDMI 1.0 [2] December 9, 2002 5GB/s, 3.95GB/s without overhead <= 1080p @ 60Hz 8 audio channels 192 kHz audio sampling frequency Supports HDCP Same video format as DVI HDMI 2.0 [3] September 4, 2013 18.8 GB/s, 14.4 GB/s without overhead <= 2160p @ 60Hz ● 32 audio channels ● 1536 kHz audio sampling frequency ● Supports HDCP ● Backwards compatible connector 4

6. High-bandwidth Digital Content Protection (HDCP) 1.Authentication of receiver a. Shared secret session key b. Authenticate any downstream receivers c. Recheck every 128 video frames [4] 2.Encryption of data stream a. Pixels XOR-ed with a changing 24 bit number 3.Key revocation a. Checks for compromised device 5

7. Pin Connections Pins 1-9:3 TMDS Channels Pins 10-12:TMDS Clock Pin 13:CEC Pin 14:ARC/HEC (1.4) Pin 15-16:DDC Pin 17:Data shield Pin 18:Power supply (+5V) Pin 19:Hot plug detect http://www.hdmi.org/installers/insidehdmicable.aspx 6

8. Display Data Channel (DDC) HDCP authentication Automatic Device Configuration o Video/audio format on receivers o Precise latency data to keep synchronization Unidirectional I2C bus o 100 kbit/s minimum http://www.hdmi.org/installers/insidehdmicable.aspx 7

9. Transition Minimized Differential Signaling (TMDS) ●Interleaves video, audio, auxiliary data 3 transmission periods o Video data o Data island o Control 8b/10b encoding using bitflipping, XOR/XNOR Audio clock recovery http://www.hdmi.org/installers/insidehdmicable.aspx 8

10. Consumer Electronics Control (CEC) Controls up to 15 connected devices ○ Used for One Touch Play, System Standby, Menu control, etc ●One-wire bidirectional bus based on AV.link [5] ○ Open collector ○ Value determined by low period http://www.hdmi.org/installers/insidehdmicable.aspx 9

11. CEC Example http://www.cypeurope.com/store/store/app/product/CPRO-8MCEC/HDMI-1-to-8-Distribution-Amplifier-with-CEC-Function 10

12. Example Project Using HDMI http://blog.parts-people.com/2012/12/20/mobile-raspberry-pi-computer-build-your-own-portable-rpi-to-go/ 11

13. What are the alternatives? VGADVIHDMI DisplayPort Pros No strict resolution limit 2048 x 1536 standard cable limitation Same format as HDMI 1080p Video and audio 2160p (2.0), 1080p (1.0) 30 fps 2160p Audio and video ● 60 fps Cons Only Video Analog signal interference Only video Fees Ports only appear on computers 12

14. Cables and Cost Cost to the manufacturer o Large manufacturers: $10,000 per year Additional $0.15 per device Reduced to $0.05 if HDMI logo used Reduced to $0.04 if HDCP implemented o Small volume manufacturers: smaller yearly fee, pay more per device Types of Cables o Standard (Type I) cables tested to 75MHz, or up to 2.25 Gb/s (720p/1080i) o High Speed (Type II) cables tested to 340MHz, or 10.2 Gb/s (2560x1600) 13

15. Conclusion Powerful interface for multimedia content o Audio, video, device control o High bandwidth o Automatic configuration o Data protection Popular, standard in embedded systems o Need separate board for 373 o Used for other EECS courses 14

16. Sources 1."HDMI Specification Marks 10-Year Milestone as De-Facto Standard for HD Connectivity". HDMI Licensing, LLC. 2013-01-08. Retrieved 2013-01-10."HDMI Specification Marks 10-Year Milestone as De-Facto Standard for HD Connectivity" 2.http://www.hdmi.org/manufacturer/hdmi_1_4/hdmi_1_4_faq.aspx 3.http://www.hdmi.org/manufacturer/hdmi_2_0/hdmi_2_0_faq.aspx 4.http://www.digital-cp.com/files/documents/04A897FD-FEF1-0EEE-CDBB649127F79525/HDCP_deciphered_070808.pdfhttp://www.digital-cp.com/files/documents/04A897FD-FEF1-0EEE-CDBB649127F79525/HDCP_deciphered_070808.pdf 5.HDMI Specification Version 1.3a, Supplement 1: Consumer Electronics Control (CEC)HDMI Specification Version 1.3a, Supplement 1: Consumer Electronics Control (CEC) 6.http://www.hdmi.org/installers/insidehdmicable.aspxhttp://www.hdmi.org/installers/insidehdmicable.aspx 7.http://www.hdmi.org/pdf/whitepaper/DesigningCECintoYourNextHDMIProduct.pdfhttp://www.hdmi.org/pdf/whitepaper/DesigningCECintoYourNextHDMIProduct.pdf 8.http://www.digital-cp.com/files/static_page_files/F3FDE47C-1A4B-B294- D0802DFEF646E602/HDCP%20on%20HDMI%20Specification%20Rev2_2_Final1.pdfhttp://www.digital-cp.com/files/static_page_files/F3FDE47C-1A4B-B294- D0802DFEF646E602/HDCP%20on%20HDMI%20Specification%20Rev2_2_Final1.pdf 9.http://www.hdmi.org/manufacturer/hdmi_2_0/index.aspxhttp://www.hdmi.org/manufacturer/hdmi_2_0/index.aspx 10.http://web.archive.org/web/20080211111003/http://www.hdmi.org/press/pr/pr_20060622.aspxhttp://newslittle.com/wp- content/uploads/2013/09/HDMI-logo_black-1600px_610x130.pnghttp://web.archive.org/web/20080211111003/http://www.hdmi.org/press/pr/pr_20060622.aspxhttp://newslittle.com/wp- content/uploads/2013/09/HDMI-logo_black-1600px_610x130.png 11.http://www.aes-media.org/sections/uk/Conf2011/Presentation_PDFs/14%20-%20john%20dawson%20- %20Audio%20Transport%20over%20HDMI%20-%20AES%202011.pdfhttp://www.aes-media.org/sections/uk/Conf2011/Presentation_PDFs/14%20-%20john%20dawson%20- %20Audio%20Transport%20over%20HDMI%20-%20AES%202011.pdf 12.http://www.cec-o-matic.com/index.phphttp://www.cec-o-matic.com/index.php 13.http://store.jvc.com/images/product/HDMI-HDMIMINI.JPGhttp://store.jvc.com/images/product/HDMI-HDMIMINI.JPG 14.http://www.hdmi.org/images/consumers/Home_Theater_1.jpghttp://www.hdmi.org/images/consumers/Home_Theater_1.jpg 15.http://www.sz-wholesaler.com/userimg/432/434sw1/hdmi-projector-hd66-89.jpghttp://www.sz-wholesaler.com/userimg/432/434sw1/hdmi-projector-hd66-89.jpg 16.http://cellphones.techfresh.net/wp-content/uploads/2009/05/hitachi-hd-woo-cellphone.jpghttp://cellphones.techfresh.net/wp-content/uploads/2009/05/hitachi-hd-woo-cellphone.jpg 17.https://lh3.ggpht.com/_OKvjOZi2mHU/TOuuorjHrrI/AAAAAAAAAMc/30HxOU2-FmA/s1600/atmdeath.jpghttps://lh3.ggpht.com/_OKvjOZi2mHU/TOuuorjHrrI/AAAAAAAAAMc/30HxOU2-FmA/s1600/atmdeath.jpg 18.http://www.techfuels.com/attachment.php?s=c1c80c743f91720f2f7a5a7bcf44a7da&attachmentid=23148&d=1297838473 15