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Chapter 9: Custom PHY IP Core 9–19
Register Interface and Register Descriptions
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Register Interface and Register Descriptions
The Avalon-MM PHY management interface provides access to the Custom PHY PCS
and PMA registers, resets, error handling, and serial loopback controls. You can use
an embedded controller acting as an Avalon-MM master to send read and write
commands to this Avalon-MM slave interface.
Figure 9–3 provides a high-level view of this hardware.
Table 917 describes the signals in the PHY Management interface.
Figure 9–3. Custom PHY IP Core
(1)
Note to Figure93:
(1) Blocks in gray are soft logic. Blocks in white are hard logic.
System
Interconnect
Fabric
to Embedded
Controller
Custom PHY PCS and PMA
Custom PHY IP Core
Resets
Status
Control
S
Avalon-MM
Control
S
Avalon-MM
Status
Reset
Controller
PLL
Reset
Clocks Clocks
to
Transceiver
Reconfiguration
Controller
Tx Data Tx Parallel Data
Rx Data Rx Parallel Data
M
Avalon-MM
PHY
Mgmt
S
Rx Serial Data & Status
Reconfig to and from Transceiver
Tx Serial Data
PMA and PCS
Registers
.
.
.
Table 9–17. Avalon-MM PHY Management Interface (Part 1 of 2)
Signal Name Direction Description
phy_mgmt_clk
Input
Avalon-MM clock input. There is no frequency restriction for the
phy_mgmt_clk
; however, if you plan to use the same clock for the
PHY management interface and transceiver reconfiguration, you
must restrict the frequency range of
phy_mgmt_clk
to
100–150 MHz to meet the specification for the transceiver
reconfiguration clock.
phy_mgmt_clk_reset
Input Global reset signal. This signal is active high and level sensitive.
phy_mgmt_address[8:0]
Input 9-bit Avalon-MM address.
phy_mgmt_writedata[31:0]
Input Input data.
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