Lattice Semiconductor
10Gb Ethernet XGXS IP Core User’s Guide
Figure 7. XGXS Idle Transmit State Diagram
!reset *
!(TX=||IDLE|| + TX=||Q||)
SEND_DATA
IF TX=||T|| THEN cvtx_terminate
TX_code-group<39:0> ?
ENCODE(TX)
PUDR
next_ifg = A * A_CNT=0
(next_ifg = K + A_CNT 0 0)
reset
SEND_A
TX_code-group<39:0> ? ||A||
next_ifg ? K
PUDR
SEND_K
TX_code-group<39:0> ? ||K||
next_ifg ? A
PUDR
Q_det
!Q_det
UCT
B
SEND_Q
TX_code-group<39:0> ? TQMSG
Q_det ? false
PUDR
B
A_CNT 0 0 *
A
code_sel=1
UCT
SEND_RANDOM_R
TX_code-group<39:0> ? ||R||
PUDR
A_CNT 0 0 *
SEND_RANDOM_K
TX_code-group<39:0> ? ||K||
PUDR
code_sel=0
A
A_CNT=0
A_CNT=0
B
A_CNT 0 0 *
code_sel =1
Q_det
SEND_RANDOM_A
TX_code-group<39:0> ? ||A||
PUDR
!Q_det *
A
A_CNT 0 0 *
code_sel=0
SEND_RANDOM_Q
B
code_sel=1
TX_code-group<39:0> ? TQMSG
Q_det ? false
PUDR
B
code_sel=1
A
code_sel=0
10
A
!Q_det *
code_sel =0
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