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Appendix a vlynq protocol specifications, A.1 special 8b/10b code groups, A.2 supported ordered sets – Texas Instruments VLYNQ Port User Manual

Page 40: Groups, Sets, Appendix a

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Appendix A VLYNQ Protocol Specifications

A.1

Special 8b/10b Code Groups

A.2

Supported Ordered Sets

Appendix A

VLYNQ relies on 8b/10b block coding to minimize the number of serial pins and allow for in-band
packet delineation and control. The following sections include general 8b/10b coding definitions and
their implementation.

Table A-1. Special 8b/10b Code Groups

Code Group Name

Octet Value

Octet Bits

Current RD -

Current RD +

K28.0

1C

0001 1100

001111 0100

110000 1011

K28.1

3C

0011 1100

001111 1001

110000 0110

K28.2

5C

0101 1100

001111 0101

110000 1010

K28.3

7C

0111 1100

001111 0011

110000 1100

K28.4

9C

1001 1100

001111 0010

110000 1101

K28.5

BC

1011 1100

001111 1010

110000 0101

K28.6

DC

1101 1100

001111 0110

110000 1001

K28.7

FC

1111 1100

001111 1000

110000 0111

K23.7

F7

1111 0111

111010 1000

000101 0111

K27.7

FB

1111 1011

110110 1000

001001 0111

K29.7

FD

1111 1101

101110 1000

010001 0111

K30.7

FE

1111 1110

011110 1000

100001 0111

Each VLYNQ module must support a limited number of ordered sets. Ordered sets provide for the
delineation of packets and synchronization between VLYNQ modules at opposite ends of the serial
connection. VLYNQ 2.0 and later versions do not require some of the following ordered sets.

Table A-2. Supported Ordered Sets

Code

Ordered Set

Encoding

Octet Value

/I/

Idle

/K28.5/

BC

/T/

End of Packet

/K29.7/

FD

/M/

Byte Disable

/K23.7/

F7

/P/

Flow Control Enable

/K28.0/

IC

/C/

Flow Control Disable

/K28.2/

5C

/E/

Error Indication

/K28.1/

3C

/0/

Init0

/K28.4/

9C

/I/

Init1

/K28.6/

DC

/L/

Link

/K30.7/

FE

40

VLYNQ Protocol Specifications

SPRUE36A – September 2007

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