EP4CE30F29C7N Datasheet, PDF (379/488 Pages) Altera Corporation – Cyclone IV Device Handbook, Volume 1

Chapter 2: Cyclone IV Reset Control and Power Down
2–5
Transceiver Reset Sequences
1 The busy signal remains low for the first reconfig_clk clock cycle. It then gets
asserted from the second reconfig_clk clock cycle. Subsequent deassertion of the
busy signal indicates the completion of the offset cancellation process. This busy signal
is required in transceiver reset sequences except for transmitter only channel
configurations. Refer to the reset sequences shown in Figure 2–2 and the associated
references listed in the notes for the figure.
1 Altera strongly recommends adhering to these reset sequences for proper operation of
the Cyclone IV GX transceiver.
Figure 2–2 shows the transceiver reset sequences for Cyclone IV GX devices.
Figure 2–2. Transceiver Reset Sequences Chart
Transceiver
initialization reset
sequences
Dynamic Reconfiguration
All supported
functional modes
except PCI Express (PCIe)
PCI Express
(PIPE)
Initialization/
Compliance and
Normal Operation
Phases (1)
Reset Sequence
for PLL
reconfiguration mode
Reset Sequence
for channel
reconfiguration mode
Bonded
‘Transmitter Only’
channel (2)
‘Receiver and
Transmitter’
channel
Non-Bonded
‘Transmitter Only’
channel (2)
‘Receiver Only’
channel
‘Receiver and
Transmitter’
channel
Receiver CDR
in automatic
lock mode
(3)
Receiver CDR
in manual
lock mode
(4)
Notes to Figure 2–2:
(1) Refer to the Timing Diagram in Figure 2–10.
(2) Refer to the Timing Diagram in Figure 2–3.
(3) Refer to the Timing Diagram in Figure 2–4.
(4) Refer to the Timing Diagram in Figure 2–5.
(5) Refer to the Timing Diagram in Figure 2–6.
(6) Refer to the Timing Diagram in Figure 2–7.
(7) Refer to the Timing Diagram in Figure 2–8.
(8) Refer to the Timing Diagram in Figure 2–9.
Receiver CDR
in automatic
lock mode
(5)
Receiver CDR
in manual
lock mode
(6)
Receiver CDR
in automatic
lock mode
(7)
Receiver CDR
in manual
lock mode
(8)
May 2013 Altera Corporation
Cyclone IV Device Handbook,
Volume 2