Altera Serial Digital Interface (SDI) MegaCore Function - Manual (Page 60)

3–30 Chapter 3: Functional Description
Block Description
Serial Digital Interface (SDI) MegaCore Function February 2013 Altera Corporation
User Guide
Figure 3–19 shows a flow chart of the SDI dynamic reconfiguration process for
transceiver-based devices.
Figure 3–18. Dynamic Reconfiguration Process Flow for Transceiver-based Devices
Notes to Figure 3–18 :
(1) SDI MegaCore (Receiver/Duplex) asserts rx_analogreset and rx_digitalreset signals to transceiver when the
transceiver is being reconfigured.
(2) The rx_analogreset signal deasserts when the transceiver is completely reconfigured, and rx_digitalreset
signal deasserts when rx_pll is stable.
Normal Operation
Reconfiguration
in Process
Data
Rate Change?
Reconfiguration
Done?
No
Yes
Yes
Start DPRIO
Idle
Write to ALT2GXB
ALT2GXB_RECONFIG
Busy?
Last ROM
Address?
No
No
No
Yes
Yes
Reconfiguration
Done
Reconfiguration
in Process
SDI_START_RECONFIG
SDI_RECONFIG_DONE
SDI MegaCore (Receiver/Duplex)
ALT2GXB_RECONFIG Control Logic