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Chapter 8: PHY IP Core for PCI Express (PIPE) 8–13
Register Interface and Register Descriptions
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Figure 8–5 provides a high-level view of this hardware. In Figure 8–5, modules shown
in white are hard logic. Modules shown in gray are soft logic.
Table 810 describes the signals that comprise the Avalon-MM PHY Management
interface.
Figure 8–5. PCI Express PIPE IP Core Top-Level Modules
System
Interconnect
Fabric
to Embedded
Controller
to
Reconfiguration
Controller
Clocks
Tx Data, Datak
PIPE Control
PHY IP Core for PCI Express
Hard PCS and PMA
PHY IP Core for PCI Express and Avalon-MM Control Interface for Non-PIPE Functionality
Dynamic
Reconfiguration
PIPE Control
Tx Data, Datak
Clocks
PIPE Status
Rx Data, Datak
Valid
Clocks
Reset
Non-PIPE
Status
Non-PIPE
Control
S
Avalon-MM
Control
Non-PIPE
S
Avalon-MM
Status
Non-PIPE
Reset
Controller
PIPE reset
M
Avalon-MM
PHY
Mgmt
S
Table 8–10. 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 Stratix V devices; 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 100–125 MHz to meet the specification for the transceiver
reconfiguration clock.
phy_mgmt_clk_reset
Input
Global reset signal that resets the entire PHY IP core. 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.
phy_mgmt_readdata[31:0]
Output Output data.
phy_mgmt_write
Input Write signal.
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