Altera UG-01080 Guía de usuario Pagina 416

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16–38 Chapter 16: Transceiver Reconfiguration Controller IP Core
Changing Transceiver Settings Using Streamer-Based Reconfiguration
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
Changing Transceiver Settings Using Streamer-Based Reconfiguration
The Streamer’s registers allow you to change to the PCS datapath settings, clock
settings, and PLL parameters by reading the new settings from an on- or off-chip
ROM. Streamer Module Registers lists the Streamer’s memory-mapped registers that
you can access using Avalon-MM read and write commands on reconfiguration
management interface.
The following sections show how to change transceiver settings using Streamer
modes 0 and 1.
Streamer-Based Reconfiguration
Follow these steps to reconfigure a transceiver setting by streaming the contents of a
MIF file through the Streamer Module.
1. Write the logical channel number to the Streamer
logical
channel
register.
2. Write MIF mode, 2’b00, to the Streamer
control
and
status
register mode bits.
3. Write the MIF base address, 0x0, to the Streamer
offset
register.
4. Write the base address of the MIF file to the Streamer
data
register.
5. Write the Streamer
control
and
status
register
write
bit to 1'b1 to initiate a write
of all the data set in the previous steps.
6. Write to the Streamer
offset
register with the value to start a MIF stream, 0x1.
7. Write the Streamer internal
data
register with the value 0x3 to setup the streaming
of the MIF.
8. Write to the Streamer
control
and
status
register to 1'b1, to initiate the streaming
operation.
9. Read the
control
and
status
register
busy
bit. When the
busy
bit is deasserted, the
MIF streaming operation has completed.
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