TLK3114SA_13 Datasheet, PDF (33/66 Pages) Texas Instruments – 10-Gbps XAUI Transceiver

nextAK = K
+ Acnt ! = 0
RESET
Any State
!(||idle|| + ||Q||)
Send Data
nextAK = A*
Acnt = 0
Send K
!||Q||
Acnt ! = 0
nextKR = R
Send R
Acnt ! = 0*
nextKR = K
Acnt ! = 0*
nextKR = K
Send K
!||Q||*
nextKR = R
Acnt ! = 0*
nextKR = R
Acnt = 0
!||Q||*
nextKR = K
Send A
Acnt = 0
Send A
||Q||
Send Q
nextKR = R
||Q||
Send Q
nextKR = K
Figure 3−13. IPG Management State Machine
SYMBOL
||idle||
||Q||
nextAK
Acnt
nextKR
Table 3−8. IPG Management State Machine Notation
DEFINITION
XGMII idle. 0x07 on TD[A:D].
Link status message:
K28.4, Dx.y, Dx.y, Dx.y
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.
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.
A randomly-generated Boolean that can assume the value K or R.
3−14