TLK3114SCZPV datasheet(32/68 Pages) TI1

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3−14

Any State

Send K

Send Data

Send A

Send K

Send Q

Send R

RESET

nextAK = K

+ Acnt ! = 0

nextKR = K

!||Q||*

nextKR = R

Acnt = 0

Acnt ! = 0*

nextKR = K

!||Q||*

nextKR = K

||Q||

Acnt ! = 0

nextKR = R

!(||idle|| + ||Q||)

nextAK = A*

Acnt = 0

!||Q||

Acnt ! = 0*

nextKR = R

Acnt ! = 0*

nextKR = K

||Q||

Figure 3−13. IPG Management State Machine

Table 3−8. IPG Management State Machine Notation

SYMBOL

DEFINITION

||idle||

XGMII idle. 0x07 on TD[A:D].

||Q||

Link status message:

K28.4, Dx.y, Dx.y, Dx.y

nextAK

A Boolean variable. It takes the value K when an A is sent at the beginning of the IPG and the value A when a K is sent at the

beginning of the IPG. Its initial value is K.

Acnt

When an A character is sent, variable Acnt is loaded with a random number such that 16

≤ Acnt ≤ 31. Acnt is decremented each

time a column of non-A characters is generated.

nextKR

A randomly-generated Boolean that can assume the value K or R.

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