
16–10 Chapter 16: Transceiver Reconfiguration Controller IP Core
Interfaces
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
provides an example of daisy chaining Transceiver Reconfiguration Controllers
Reconfiguration Interface Management Interface
The reconfiguration management interface is an Avalon-MM slave interface. You can
use an embedded controller to drive this interface. Alternatively, you can use a finite
state machine to control all Avalon-MM reads and writes to the Transceiver
Reconfiguration Controller. This interface provides access to the Transceiver
Reconfiguration Controller’s Avalon-MM registers.
f For more information about the Avalon-MM protocol, including timing diagrams,
refer to the Avalon Interface Specifications. Table 16–8 list the signals in the
reconfiguration management interface.
tx_cal_busy
Output
This optional signal is asserted while calibration is in progress
and no further reconfiguration operations should be
performed. You can monitor this signal to determine the
status of the Transceiver Reconfiguration Controller. Arria V
devices require DCD calibration for channels with data rates
4.9152 Gbps.
In Arria V devices, you cannot run DCD calibration for multiple
channels on the same side of a device simultaneously. If your
design includes more than 1 Transceiver Reconfiguration
Controller on a single side of the FPGA, you must daisy chain
the this
tx_cal_busy
output port to the next
cal_busy_in
input port on the same side of the FPGA.
rx_cal_busy
Output
This optional signal is asserted while calibration is in progress
and no further reconfiguration operations should be
performed. You can monitor this signal to determine the
status of the Transceiver Reconfiguration Controller.
Table 16–7. Transceiver Reconfiguration Interface (Part 2 of 2)
Signal Name Direction Description
Table 16–8. Reconfiguration Management Interface (Part 1 of 2)
Signal Name Direction Description
mgmt_clk_clk
Input
Avalon-MM clock input. The frequency range for the
mgmt_clk_clk
is 100–125 MHz for Stratix V devices. It is
75–125 MHz for Arria V devices. Falling outside of the required
frequency range may reduce the accuracy of the calibration
functions.
mgmt_rst_reset
Input
This signal resets the Transceiver Reconfiguration Controller. This
signal is active high and level sensitive.
If the Transceiver Reconfiguration Controller IP Core connects to
an Interlaken PHY IP Core, the Reconfiguration Controller IP Core
mgmt_rst_reset
must be simultaneously asserted with
phy_mgmt_clk_reset
to bring the Frame Generators in the link
into alignment. Failure to meet to this requirement will result in
excessive transmit lane-to-lane skew in the Interlaken link.
reconfig_mgmt_address[6:0]
Input Avalon-MM address.
reconfig_mgmt_writedata[31:0]
Input Input data.
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