1、 Copyright 2015 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 3 Barker Avenue, White Plains, NY 10601 (914) 761-1100 Approved February 4, 2015 SMPTE ST 2081-1:2015 SMPTE STANDARD 6 Gb/s Signal/Data Serial Interface Electrical Table of Contents Page Foreword 2 Intellectual Property . 2 In
2、troduction 2 1 Scope 3 2 Conformance Notation 3 3 Normative References 3 4 Source Data 4 Sync-Bit Insertion 6 4.1 Channel Coding and Serialization . 7 4.25 Coaxial Cable Interface . 8 Generator Signal Levels and Specifications 8 5.1Receiver Signal Levels and Specifications 9 5.2Return Loss . 9 5.36
3、Connector and Cable Types . 10 BNC connectors 10 6.1Cables 10 6.2Annex A Bibliography (Informative) 11 Annex B Channel Coding (Informative) 12 Annex C Pot-Hole Pathological and the Sync-Bit Insertion Process (Informative) 13 Page 1 of 14 pages SMPTE ST 2081-1: 2015 Page 2 of 14 pages Foreword SMPTE
4、(the Society of Motion Picture and Television Engineers) is an internationally-recognized standards developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries on six continents. SMPTEs Engineering Documents, including Standards, Re
5、commended Practices, and Engineering Guidelines, are prepared by SMPTEs Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates closely with other standards-developing organizations, including ISO, IEC and ITU. SMPTE Engineeri
6、ng Documents are drafted in accordance with the rules given in its Standards Operation Manual. SMPTE ST 2081-1 was prepared by Technology Committee 32NF. Intellectual Property At the time of publication no notice had been received by SMPTE claiming patent rights essential to the implementation of th
7、is Standard. However, attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. SMPTE shall not be held responsible for identifying any or all such patent rights. Introduction This section is entirely informative and does not form an integr
8、al part of this Engineering Document. SMPTE ST 2081-1 defines a bit-serial data interface for the transport of 6 Gb/s nominal component digital signals or packetized data. The mapping of various source image formats to the bit-serial data structure defined here in this document are described in addi
9、tional SMPTE ST 2081 document parts. SMPTE ST 2081-0 contains an informative roadmap for the 6 Gb/s Signal/Data Serial Interfaces. End users are cautioned that they should work with Serial Digital Interface equipment vendors to ensure the electrical and mechanical capabilities of cables and connecto
10、rs - whether existing or new designed in support of this interface meet their requirements. SMPTE ST 2081-1: 2015 Page 3 of 14 pages 1 Scope This standard describes the electrical and physical characteristics of a 6 Gb/s coaxial cable interface suitable for applications where the signal loss does no
11、t exceed an amount specified by the receiver manufacturer. Typical loss amounts would be in the range of up to 40 dB at one-half the clock frequency. 2 Conformance Notation Normative text is text that describes elements of the design that are indispensable or contains the conformance language keywor
12、ds: “shall“, “should“, or “may“. Informative text is text that is potentially helpful to the user, but not indispensable, and can be removed, changed, or added editorially without affecting interoperability. Informative text does not contain any conformance keywords. All text in this document is, by
13、 default, normative, except: the Introduction, any section explicitly labeled as “Informative“ or individual paragraphs that start with “Note:” The keywords “shall“ and “shall not“ indicate requirements strictly to be followed in order to conform to the document and from which no deviation is permit
14、ted. The keywords, “should“ and “should not“ indicate that, among several possibilities, one is recommended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required; or that (in the negative form) a certain possibi
15、lity or course of action is deprecated but not prohibited. The keywords “may“ and “need not“ indicate courses of action permissible within the limits of the document. The keyword “reserved” indicates a provision that is not defined at this time, shall not be used, and may be defined in the future. T
16、he keyword “forbidden” indicates “reserved” and in addition indicates that the provision will never be defined in the future. A conformant implementation according to this document is one that includes all mandatory provisions (“shall“) and, if implemented, all recommended provisions (“should“) as d
17、escribed. A conformant implementation need not implement optional provisions (“may“) and need not implement them as described. Unless otherwise specified, the order of precedence of the types of normative information in this document shall be as follows: Normative prose shall be the authoritative de
18、finition; Tables shall be next; followed by formal languages; then figures; and then any other language forms. 3 Normative References The following standards contain provisions that, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indi
19、cated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. SMPTE ST 2081-10:2015, 2160-Line and 1080-Line Source Image and Ancillary Data
20、 Mapping for Single-Link 6G-SDI SMPTE RP 184:2004, Specification of Jitter in Bit Serial Digital Systems IEC 61169-8 (2007-2), Radio-Frequency Connectors Part 8: Sectional Specification R.F. Coaxial Connectors with Inner Diameter of Outer Conductor 6,5 mm (0,256 in) with Bayonet Lock Characteristic
21、SMPTE ST 2081-1: 2015 Page 4 of 14 pages Impedance 50 (Type BNC), Annex A (Normative) Information for Interface Dimensions of 75 Characteristic Impedance Connector with Unspecified Reflection Factor1,2 IEC 61169-29 (2005-6), Radio-Frequency Connectors Part 29: Sectional Specification Miniature Radio
22、 Frequency Coaxial Connectors Model Screw, Snap-on, Push-pull or Quick-lock, Slide-in (Rack and Panel Applications) Characteristic Impedance 50 (type 1,0/2,3) 50 and 75 Applications2 4 Source Data For this interface, the source data shall be the 6G-SDI 10-bit Multiplex as defined for example in SMPT
23、E ST 2081-10, of the form illustrated in the diagram of Figure 1 or Figure 2, having an interface frequency of 594 MHz or 594/1.001 MHz. Note: Figure 1 shows the Type 1 10-bit multiplex resulting from mapping modes in which each data stream has a single instance of TRS words, Line Numbers, CRC Words
24、, etc. Figure 2 shows the Type 2 10-bit multiplex resulting from mapping modes in which each data stream has two instances of TRS words, Line Numbers, CRC Words, etc. A Type 2 multiplex is the result of SMPTE ST 292-1 mapping of each sub image. It is generated for 4:2:2 10-bit formats with frame rat
25、es of 30 fps or less. 1 Please note that the title of this normative reference could be misleading. This standard requires the use of the 75-ohm connector defined in Annex A of this reference. 2 Please note that this reference is required ONLY to provide mechanical dimensions of 75 ohm connectors. S
26、MPTE ST 2081-1: 2015 Page 5 of 14 pages 6 G - S D I 1 0 - b i t m u l t i p l e x D a t a S t r e a m o n e1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H zD a t a S t r e a m t w o1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H zD a t a S t r e a m t h r e e1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H
27、 zD a t a S t r e a m f o u r1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H z4 0 - b i t V i r t u a l I n t e r f a c eEAV3FFEAV000EAV000LN1CRC0CRC1EAVXYZB l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FFSAV000SAV000SAVXYZD i g i t a l A c t i v e L i n eEAV3FFEAV0
28、00EAV000LN1CRC0CRC1EAVXYZB l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FFSAV000SAV000SAVXYZD i g i t a l A c t i v e L i n eEAV3FFEAV000EAV000LN1CRC0CRC1EAVXYZB l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FFSAV000SAV000SAVXYZD
29、 i g i t a l A c t i v e L i n eEAV3FFEAV000EAV000LN1CRC0CRC1EAVXYZB l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FFSAV000SAV000SAVXYZD i g i t a l A c t i v e L i n eLN0LN0LN0LN0EAV3FFEAV3FFEAV3FFEAV3FFEAV000EAV000EAV000EAV000EAV000EAV000EAV000EAV000EAVXYZEAVXYZE
30、AVXYZEAVXYZLN1LN1LN1LN1D a t a S t r e a m f o u rD a t a S t r e a m t w oD a t a S t r e a m t h r e eD a t a S t r e a m o n eLN0LN0LN0LN06 G b / s S D I 1 0 - b i t i n t e r f a c e5 9 4 M H z o r 5 9 4 / 1 . 0 0 1 M H zFigure 1 6 Gb/s 10-bit Multiplex Type 1 SMPTE ST 2081-1: 2015 Page 6 of 14
31、pages 6 G - S D I 1 0 - b i t m u l t i p l e x4 0 - b i t V i r t u a l I n t e r f a c eEAV3FF(C)EAV3FF(C)EAV3FF(C)EAV3FF(C)EAV3FF(Y)EAV3FF(Y)EAV3FF(Y)EAV3FF(Y)EAV000(C)EAV000(C)EAV000(C)EAV000(C)EAV000(Y)EAV000(Y)EAV000(Y)EAV000(Y)EAV000(C)EAV000(C)EAV000(C)EAV000(C)EAV000(Y)EAV000(Y)EAV000(Y)EAV
32、000(Y)EAVXYZ(C)EAVXYZ(C)EAVXYZ(C)EAVXYZ(C)EAVXYZ(Y)EAVXYZ(Y)EAVXYZ(Y)EAVXYZ(Y)LN0(C)LN0(C)LN0(C)LN0(C)D a t a S t r e a m f o u rD a t a S t r e a m t w oD a t a S t r e a m t h r e eD a t a S t r e a m o n eEAV3FF(C)EAV3FF(Y)EAV000(C)EAV000(Y)EAV000(C)EAV000(Y)EAVXYZ(C)EAVXYZ(Y)EAV3FF(C)EAV3FF(Y)EA
33、V000(C)EAV000(Y)EAV000(C)EAV000(Y)EAVXYZ(C)EAVXYZ(Y)EAV3FF(C)EAV3FF(Y)EAV000(C)EAV000(Y)EAV000(C)EAV000(Y)EAVXYZ(C)EAVXYZ(Y)EAV3FF(C)EAV3FF(Y)EAV000(C)EAV000(Y)EAV000(C)EAV000(Y)EAVXYZ(C)EAVXYZ(Y)6 G b / s S D I 1 0 - b i t i n t e r f a c eLN0(Y)LN0(Y)LN0(Y)LN0(Y)LN1(C)LN1(Y)CRC0(C)CRC0(Y)CRC1(C)CR
34、C1(Y)B l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FF(C)SAV3FF(Y)SAV000(C)SAV000(Y)SAV000(C)SAV000(Y)SAVXYZ(C)SAVXYZ(Y)D i g i t a l A c t i v e L i n eLN1(C)LN1(Y)CRC0(C)CRC0(Y)CRC1(C)CRC1(Y)B l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y
35、 D a t aSAV3FF(C)SAV3FF(Y)SAV000(C)SAV000(Y)SAV000(C)SAV000(Y)SAVXYZ(C)SAVXYZ(Y)D i g i t a l A c t i v e L i n eLN1(C)LN1(Y)CRC0(C)CRC0(Y)CRC1(C)CRC1(Y)B l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FF(C)SAV3FF(Y)SAV000(C)SAV000(Y)SAV000(C)SAV000(Y)SAVXYZ(C)SAVXY
36、Z(Y)D i g i t a l A c t i v e L i n eLN1(C)LN1(Y)CRC0(C)CRC0(Y)CRC1(C)CRC1(Y)B l a n k i n g C o d e W o r d s o r O p t i o n a l A n c i l l a r y D a t aSAV3FF(C)SAV3FF(Y)SAV000(C)SAV000(Y)SAV000(C)SAV000(Y)SAVXYZ(C)SAVXYZ(Y)D i g i t a l A c t i v e L i n eD a t a S t r e a m o n e1 4 8 . 5 M H
37、z o r 1 4 8 . 5 / 1 . 0 0 1 M H zD a t a S t r e a m t w o1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H zD a t a S t r e a m t h r e e1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H zD a t a S t r e a m f o u r1 4 8 . 5 M H z o r 1 4 8 . 5 / 1 . 0 0 1 M H z5 9 4 M H z o r 5 9 4 / 1 . 0 0 1 M H zLN0(C)
38、LN0(Y)LN0(C)LN0(Y)LN0(C)LN0(Y)LN0(C)LN0(Y)Figure 2 6 Gb/s 10-bit Multiplex Type 2 Sync-Bit Insertion 4.1To prevent long runs of zeros and ones occurring in the serial bit-stream, the 10-bit parallel interface data stream shall be modified such that the two Least Significant bits (LSBs), of repeated
39、3FF or 000 code words shall be replaced by the sync-bit values of 10b for 000h words and 01b for 3FFh words excluding the 3FFh 000h 000h sequence as illustrated in the diagram of Figure 3. To ensure synchronization and word alignment can be reliably achieved in the receiver, this 3FFh 000h 000h sequ
40、ence shall be retained without modification as shown in Figure 3. This Sync-bit insertion process shall be reversed in the receiver restoring the original 3FFh and 000h data patterns. Note: Repeating patterns of 3FF or 000h in the 10-bit parallel interface can result in a long run of zeros feeding t
41、he scrambling polynomial. This condition can result in the generation of the “Pot Hole Pathological” condition as described in the paper “Pathological Check Codes and the SMPTE Scrambler in the HD Age” published in the October 2011 edition of the SMPTE Motion Imaging Journal. A run length of up to 8
42、0 “1s” and up to 179 “0s” can be produced as described in informative Annex C for the Type 2 multiplex, and 40 “1s” and up to 89 “0s” can be produced for the Type 1 multiplex. SMPTE ST 2081-1: 2015 Page 7 of 14 pages 3FD(C)3FD(C)3FD(C)3FD(C)3FD(Y)3FD(Y)3FD(Y)3FF(Y)000(C)000(C)002(C)002(C)002(Y)002(Y
43、)002(Y)002(Y)002(C)002(C)002(C)002(C)002(Y)002(Y)002(Y)002(Y)XYZ(C)XYZ(C)XYZ(C)XYZ(C)XYZ(Y)XYZ(Y)XYZ(Y)XYZ(Y)LN0(C)LN0(C)LN0(C)LN0(C)0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 02 0 “ 0 s ”W o r s t - c a s e r u n o f z e r o sI n t o s c r a m b l e rLSbMSb0 1 0 0 0 0 0 0 0 00 1 0 0 0 0 0 0 0 0 0 1 0 0
44、0 0 0 0 0 01 1 1 1 1 1 1 1 1 13 F F , 0 0 0 , 0 0 0 s e q u e n c e l e f t i n t a c t f o r f r a m i n g1 0 - b i t M u l i p l e x a f t e r s y n c b i t i n s e r t i o n1 0 1 1 1 1 1 1 1 11 0 1 1 1 1 1 1 1 1W o r s t - c a s e r u n o f o n e s1 8 “ 1 s ”1 0 - b i t w o r d :3 F D h1111111101
45、00000000101 0 - b i t w o r d :0 0 2 hM S bL S b00000000001 0 - b i t w o r d :0 0 0 h0110T w o L S b sr e p l a c e d w i t h :11111111111 0 - b i t w o r d :3 F F hM S bL S bT R S / A F D P r e - a m b l e s a f t e r S y n c - b i t i n s e r t i o nFigure 3 Sync-bit Insertion process Channel Cod
46、ing and Serialization 4.2Multiplexed data shall be serialized with the LSB (Least Significant Bit) of each data word transmitted first at a serial data rate of 5.94 Gb/s or 5.94/1.001 Gb/s. The channel coding scheme shall be scrambled NRZI (non-return to zero inverted), See Annex B. The generator po
47、lynomial for the scrambled NRZ shall be G1(X) = X9 + X4 + 1. Polarity-free scrambled NRZI sequence data shall be produced by the generator polynomial G2(X) = X + 1. The input signal to the scrambler shall be positive logic, where the highest voltage represents data 1 and the lowest voltage represent
48、s data 0. SMPTE ST 2081-1: 2015 Page 8 of 14 pages 5 Coaxial Cable Interface Generator Signal Levels and Specifications 5.1These specifications are defined for measurement of the serial output of a source derived from a parallel domain signal. The output of the generator (source signal transmitter),
49、 shall be measured across a 75-ohm resistive load connected through a 1 meter coaxial cable and 75 ohm BNC connectors meeting the requirements defined in Section 6.2. Figure 4 depicts the measurement dimensions for amplitude, rise-time and overshoot. The generator shall have an unbalanced output circuit with a source impedance of 75 ohms and shall meet the return loss requirements defined in Table 2. Figure 4 Waveform measurement Dimensions The peak-to-peak signal amp
