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TOSLINK
TOSLINK
(from Toshiba
Toshiba
Link[2]) is a standardized optical fiber connector system.[3] Also known generically as an "optical audio cable" or just "optical cable", its most common use is in consumer audio equipment (via a "digital optical" socket), where it carries a digital audio stream from components such as CD and DVD
DVD
players, DAT recorders, computers, and modern video game consoles, to an AV receiver that can decode two channels of uncompressed lossless PCM audio or compressed 5.1/7.1 surround sound such as Dolby Digital
Dolby Digital
Plus or DTS-HD High Resolution Audio. Unlike HDMI, TOSLINK
TOSLINK
does not have the bandwidth to carry the lossless versions of Dolby TrueHD, DTS-HD Master Audio, or more than two channels of PCM audio. Although TOSLINK
TOSLINK
supports several different media formats and physical standards, digital audio connections using the rectangular EIAJ/JEITA RC-5720 (also CP-1201 and JIS C5974-1993 F05) connector are by far the most common.[4] The optical signal is a red light with a peak wavelength of 650 nm.[2] Depending on the type of modulated signal being carried, other optical wavelengths may be present.[4] A less common format is a coaxial cable ending in RCA jacks, which is found on some receivers.

Contents

1 History 2 Properties and issues 3 Design

3.1 Mini-TOSLINK

4 References 5 External links

History[edit]

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TOSLINK
TOSLINK
connector (JIS F05)

Toshiba
Toshiba
originally created TOSLINK
TOSLINK
to connect their CD players to the receivers they manufactured, for PCM audio
PCM audio
streams. The software layer is based on the "Sony Philips Digital Interconnect Format" (S/PDIF), while the hardware layer utilizes a fiber optic transmission system, rather than the electrical (copper) hardware layer of S/PDIF. TOSLINK was soon adopted by manufacturers of most CD players. It can often be found on video source ( DVD
DVD
and Blu-ray players, cable boxes and game consoles) to connect the digital audio stream to Dolby Digital/DTS decoders. The name is a registered trademark of Toshiba, created from TOShiba-LINK. Variations of the name, such as TOSlink, TosLink, and Tos-link, are also seen, while the official generic name for the standard is EIAJ optical. ADAT Lightpipe or simply ADAT Optical uses an optical transmission system similar to TOSLINK, and is used in the professional music/audio industry. While the ADAT Lightpipe format uses the same JIS F05 connectors as TOSLINK, the ADAT Lightpipe data format is not compatible with S/PDIF. Properties and issues[edit] Due to their high attenuation of light, the effective range of plastic optical cables is limited to 5–10 m.[1] They can temporarily fail or be permanently damaged if tightly bent. Although less commonly available and more expensive than plastic optical fiber (POF) cables, glass or silica optical fibers have lower losses and can extend the range of the TOSLINK
TOSLINK
system. Optical cables are not susceptible to electrical problems such as ground loops and RF interference.[5] Design[edit]

A TOSLINK
TOSLINK
fiber optic audio cable being illuminated on one end

Several types of fiber can be used for TOSLINK: inexpensive 1 mm plastic optical fiber, higher-quality multistrand plastic optical fibers, or quartz glass optical fibers, depending on the desired bandwidth and application. TOSLINK
TOSLINK
cables are usually limited to 5 meters in length, with a technical maximum[1] of 10 meters, for reliable transmission without the use of a signal booster or a repeater. However, it is very common for interfaces on newer consumer electronics (satellite receivers and PCs with optical outputs) to easily run over 30 meters on even low-cost (0.82 USD/m 2009) TOSLINK cables. TOSLINK
TOSLINK
transmitters operate at a nominal optical wavelength of 650 nm (~461.2 THz). Mini-TOSLINK[edit]

A mini- TOSLINK
TOSLINK
adapter

Mini- TOSLINK
TOSLINK
is a standardized optical fiber connector smaller than the standard square TOSLINK
TOSLINK
connector commonly used in larger consumer audio equipment. The plug is almost the same size and shape as the ubiquitous 3.5 mm stereo minijack. Adapters are available to connect a full-size TOSLINK
TOSLINK
plug to a mini- TOSLINK
TOSLINK
socket. Combined 3.5 mm jack and mini- TOSLINK
TOSLINK
sockets exist which can accept a 3.5 mm jack or a mini- TOSLINK
TOSLINK
plug; mini- TOSLINK
TOSLINK
plugs are made 0.5 mm longer than electrical jack plugs so that the latter are too short to touch and damage the LED of combined connectors. Many laptop computer and portable digital audio equipment models, such as the Google Chromecast Audio device[6][7] and Apple AirPort Express
AirPort Express
and iPod Hi-Fi, use these connectors that allow for the insertion of 3.5 mm analog (electrical) headphone output or microphone input or mini- TOSLINK
TOSLINK
digital (optical) output. References[edit]

^ a b c epanorama.net. " S/PDIF
S/PDIF
Interface Document". Retrieved 2009-02-16.  ^ a b Toshiba
Toshiba
TOTX1701 TOSLINK
TOSLINK
Transmitter Module specifications. ^ "What Is TOSLINK?" Toshiba
Toshiba
Toslink FAQs. ^ a b "Product guide, Fiber-Optic Devices TOSLINK(tm)" (PDF).  100621 digikey.com ^ Joseph D. Cornwall (December 31, 2004). "Understanding Digital Interconnects". Audioholics.com. Retrieved 2007-07-12.  ^ Pendlebury, Ty (December 10, 2015). "Chromecast Audio adds support for multiroom music and high-res files". Cnet. Archived from the original on April 24, 2016.  ^ Greenwald, Will (December 14, 2015). "Google Chromecast Audio". PC Magazine. Archived from the original on April 24, 2016. 

External links[edit]

Wikimedia Commons has media related to TOSLINK.

TOSLINK
TOSLINK
Interconnect History & Basics

v t e

Audio and video connectors

Analog audio

Banana plug Binding post D-subminiature Euroblock DIN

Mini-DIN

Jack plug RCA Speaker spring terminal Speakon XLR

Digital audio

BNC D-sub S/PDIF TOSLINK XLR

Video

BNC Component RGB Component YPbPr Composite video D-Terminal DB13W3 DFP DIN

Mini-DIN

DMS-59

LFH

DVI

Mini-DVI Micro-DVI

RCA S-Video VGA

Mini-VGA

Audio and Video

ADC Belling-Lee EVC Type F HDBaseT HDMI DisplayPort

mDP

MHL (superMHL) Minijack P&D PDMI SCART

Visual charts

List of video connectors

Other

Thunderbolt USB

v t e

Audio and video interfaces and connectors

Audio only

Analog

Interface: PC System Design Guide Connectors: TRS 3.5 mm Interface: Balanced audio Connectors: TRS 6.53 mm XLR

Digital

Interface: S/PDIF Connectors: RCA jack
RCA jack
(coaxial) TOSLINK
TOSLINK
(optical) BNC Interface: AES3
AES3
(AES/EBU) Connectors: RCA jack XLR TOSLINK
TOSLINK
(optical) BNC

Video only

Analog

Interface: VGA Connectors: DB-15 DVI-A Interface: Composite Connectors: RCA jack
RCA jack
yellow Interface: S-Video Connectors: Mini-DIN 4 Pin Interface: Component Connectors: RCA jacks × 3 Interface: Composite S-Video, and Component Connectors: VIVO using Mini-DIN 9 Pin

Digital and analog

Interface: DVI Connectors: DVI-I/DVI-D

Video and audio

Digital

Interface: HDMI Connectors: HDMI
HDMI
connector Interface: DisplayPort Connectors: DisplayPort
DisplayPort
connector Interface: HDBaseT Connectors: 8P8C
8P8C
connector

v t e

Toshiba

Divisions and subsidiaries

Current

Digital Products Group

Toshiba
Toshiba
Telecommunication Systems Division

Electronic Devices & Components Group Infrastructure Systems Group

Westinghouse Electric Company

Landis+Gyr OCZ Storage Solutions

Defunct

Sord Computer Corporation1 Toshiba
Toshiba
Medical Systems Corporation 2

Joint ventures and shareholdings

Current

Ikegami Tsushinki
Ikegami Tsushinki
(20%) TMEIC Toshiba
Toshiba
Samsung Storage Technology (51%)

Defunct

Toshiba
Toshiba
EMI (Founded as Toshiba
Toshiba
Music Industries)2

Youmex
Youmex
Co. 1

Japan Display
Japan Display
2

Predecessors

Hakunetsusha Shibaura Seisakusho Tanaka Seisakusho

Products, services and standards

Current

AP1000 Cell JNR Class ED76 JNR Class EF58 JNR Class EF60 JNR Class EF64 JNR Class EF65 JR Freight Class EH500 JR Freight Class HD300 Media-embedded processor Regza SpursEngine Portégé Tecra TG01 TS921 TOSLINK

Past

902T DeKi 600 HD DVD Libretto Qosmio Satellite Thrive JNR Class EF62 JNR Class EF63 JNR Class EH10 SmartMedia e310 T1000 T1000LE T1100 T1200 T3100

People

Toshiwo Doko Tanaka Hisashige

Places

Lazona Kawasaki Plaza

Other

HDMI
HDMI
Licensing Sony Toshiba
Toshiba
IBM Center of Competence for the Cell Processor Time Sculpture Toshiba
Toshiba
Brave Lupus Toshiba
Toshiba
Classic Toshiba
Toshiba
S.C. Toshiba
Toshiba
Science Institute

1Now integrated into other Toshiba
Toshiba
divisions or business groupings 2Sold

.