
Chapter 16: Transceiver Reconfiguration Controller IP Core 16–21
AEQ Registers
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
AEQ Registers
Adaptive equalization compensates for backplane losses and dispersion which
degrade signal quality. You can choose to run the AEQ once at power up or to run it
continuously to dynamically adapt to changing conditions. You can also use AEQ to
help control the four-stage continuous time linear equalizer (CTLE) which is a manual
tool that compensates for backplane losses and dispersion.
Table 16–16 lists the direct AEQ registers that you can access using Avalon-MM reads
and writes on reconfiguration management interface.
1 All undefined register bits are reserved.
Table 16–16. AEQ Registers
Recon
-fig
Addr
Bits R/W Register Name Description
7’h28 [9:0] RW
logical channel number
The logical channel number of the AEQ hardware to be
accessed. Must be specified when performing dynamic
updates. The Transceiver Reconfiguration Controller maps
the logical address to the physical address.
7’h29 [9:0] R
physical channel address
The physical channel address. The Transceiver
Reconfiguration Controller maps the logical address to the
physical address.
7’h2A
[9] R
control and status
Error
. When asserted, indicates an error. This bit is asserted
when the channel address is invalid.
[8] R
Busy
. When asserted, indicates that a reconfiguration
operation is in progress.
[1] W
Read
. Writing a 1 to this bit triggers a read operation.
[0] W
Write
. Writing a 1 to this bit triggers a write operation.
7’h2B [3:0] RW
aeq_offset
Specifies the address of the AEQ register to be read or
written. Refer to Table 16–17 for details.
7’h2C [15:0] RW
data
Specifies the read or write data.
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