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| TLK1201IRCPRG4 Datasheet, PDF (15/22 Pages) Texas Instruments – ETHERNET TRANSCEIVERS | |||
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TLK1201RCP, TLK1201IRCP
ETHERNET TRANSCEIVERS
SLLS506E â AUGUST 2001 â REVISED MAY 2007
APPLICATION INFORMATION
8B/10B transmission code (continued)
The 8b/10b transmission code uses letter notation describing the bits of an unencoded information octet. The
bit notation of A,B,C,D,E,F,G,H for an unencoded information octet is used in the description of the 8b/10b
transmission code-groups, where A is the LSB. Each valid code group has been given a name using the
following convention: /Dx.y/ for the 256 valid data code-groups and /Kx.y/ for the special control code-groups,
where y is the decimal value of bits EDCBA and x is the decimal value of bits HGF (noted as K<HGF.EDCBA>).
Thus, an octet value of FE representing a code-group value of K30.7 would be represented in bit notation as
111 11110.
VDD
TXP
ZO
RXP
5 kâ¦
TXN
Transmitter
ZO
ZO
ZO
Media
7.5 kâ¦
GND
+
VDD
_
5 kâ¦
RXN
7.5 kâ¦
GND
Receiver
Figure 10. High-Speed I/O Directly-Coupled Mode
TXP
ZO
ZO
TXN
ZO
ZO
Transmitter
Media
VDD
RXP
5 kâ¦
7.5 kâ¦
GND
+
VDD
_
5 kâ¦
RXN
7.5 kâ¦
GND
Receiver
Figure 11. High-Speed I/O AC-Coupled Mode
⢠POST OFFICE BOX 655303 DALLAS, TEXAS 75265
15
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