Chapter 3: Cyclone IV Dynamic Reconfiguration 3–3
Dynamic Reconfiguration Controller Architecture
November 2011 Altera Corporation Cyclone IV Device Handbook,
Volume 2
Figure 3–1 shows a conceptual view of the dynamic reconfiguration controller
architecture. For a detailed description of the inputs and outputs of the
ALTGX_RECONFIG instance, refer to “Error Indication During Dynamic
Reconfiguration” on page 3–36.
1 Only PMA reconfiguration mode supports manual equalization controls.
1 You can use one ALTGX_RECONFIG instance to control multiple transceiver blocks.
However, you cannot use multiple ALTGX_RECONFIG instances to control one
transceiver block.
Figure 3–1. Dynamic Reconfiguration Controller
Note to Figure 3–1:
(1) The PMA control ports consist of the V
OD
, pre-emphasis, DC gain, and manual equalization controls.
Offset
Cancellation
control logic
reconfig_address_out[5..0]
Channel
reconfig
logic
ALTGX_RECONFIG MegaWizard Plug-In Manager
ALTGX_RECONFIG Instance
(Dynamic Reconfiguration Controller)
reconfig_clk
read
write_all
PMA control ports (1)
logical_channel_address[n..0]
rx_tx_duplex_sel[1..0]
reconfig_mode_sel[2..0]
reconfig_address_en
channel_reconfig_done
error
busy
data valid
reconfig_togxb[3..0]
reconfig_fromgxb[n..0]
ALTGX MegaWizard
Plug-In Manager
ALTGX Instances
Parallel
to
Serial
Converter
addr
data
Address
Translation
Analog controls
reconfig logic
reset_reconfig_address
reconfig_data[15..0]
reconfig_reset
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