Altera CPRI v6.0 MegaCore Function User Manual
Page 38
Signal Name
Direction
Description
nego_protocol_complete
Input
Indicates the CPRI protocol version negotiation is
complete.
This signal is available only if you turn on Enable start-up
sequence state machine in the CPRI v6.0 parameter
editor.
Asserting this signal advances the start-up sequence state
machine from state C to state D. The IP core writes the
value of this signal to the
nego_protocol_complete
field
of the
START_UP_SEQ
register at offset 0x24.
nego_cm_complete
Input
Indicates the Control and Management negotiation is
complete.
This signal is available only if you turn on Enable start-up
sequence state machine in the CPRI v6.0 parameter
editor.
Asserting this signal advances the start-up sequence state
machine from state D to state E. The IP core writes the
value of this signal to the
nego_cm_complete
field of the
START_UP_SEQ
register at offset 0x24.
nego_vss_complete
Input
Indicates the Vendor Specific negotiation is complete.
This signal is available only if you turn on Enable start-up
sequence state machine in the CPRI v6.0 parameter
editor.
Asserting this signal advances the start-up sequence state
machine from state E to state F. The IP core writes the
value of this signal to the
nego_vss_complete
field of the
START_UP_SEQ
register at offset 0x24.
nego_l1_timer_expired
Input
If you do not turn on Enable L1 inband protocol
negotiator in the CPRI v6.0 parameter editor, drive this
signal from your user-defined L1 timer to indicate that the
L1 timer has expired.
Note that if you do not turn on Enable L1 inband
protocol negotiator, user logic is expected to maintain an
L1 timer outside the IP core.
This signal is available only if you turn on Enable start-up
sequence state machine in the CPRI v6.0 parameter
editor.
If you also turn on Enable L1 inband protocol negotiator
in the CPRI v6.0 parameter editor, you should tie this
signal low so it does not interfere with the internal L1
timer.
3-8
Start-Up Sequence Following Reset
UG-01156
2014.08.18
Altera Corporation
Functional Description