
Chapter 19: Migrating from Stratix IV to Stratix V Devices 19–5
Differences Between PHY IP Core for PCIe PHY (PIPE) Parameters in Stratix IV and Stratix V Devices
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Differences Between PHY IP Core for PCIe PHY (PIPE) Parameters in
Stratix IV and Stratix V Devices
Table 19–4 lists the PHY IP Core for PCI Express PHY (PIPE) parameters and the
corresponding ALTGX megafunction parameters.
rx_rmfifoempty
[2<n> – 1:0] Not available —
rx_rmfifodatainserted
[2<n> – 1:0] Not available —
rx_rmfifodatadeleted
[2<n> – 1:0] Not available —
Transceiver Reconfiguration
cal_blk_clk
1
These signals are included in the
reconfig_to_xcvr
bus.
—
reconfig_clk
1—
reconfig_togxb
[3:0]
reconfig_to_xcvr
variable
reconfig_fromgxb
[16:0]
reconfig_from_xcvr
variable
Avalon MM Management Interface
Not available
phy_mgmt_clk_rst
1
phy_mgmt_clk
1
phy_mgmt_address
[8:0]
phy_mgmt_read
1
phy_mgmt_readdata
[31:0]
phy_mgmt_write
1
phy_mgmt_writedata
[31:0]
Note to Table 19–3:
(1) <n> = the number of lanes. <d> = the total deserialization factor from the pin to the FPGA fabric.
Table 19–3. Correspondences between XAUI PHY Stratix IV GX and Stratix V Device Signals (Part 2 of 2)
(1)
Stratix IV GX Devices Stratix V Devices
Signal Name Width Signal Name Width
Table 19–4. Comparison of ALTGX Megafunction and PHY IP Core for PCI Express PHY (PIPE) Parameters (Part 1 of 2)
ALTGX Parameter Name (Default Value) PCI Express PHY (PIPE) Parameter Name Comments
Number of channels Number of Lanes —
Channel width Deserialization factor —
Subprotocol Protocol Version —
input clock frequency PLL reference clock frequency —
Starting Channel Number —
Automatically set to 0.
Quartus II software handles
lane assignments.
Enable low latency sync
pipe_low_latency_syncronous_mode
—
Enable RLV with run length of
pipe_run_length_violation_checking
Always on
Enable electrical idle inference
functionality
Enable electrical idle inferencing —
—
phy_mgmt_clk_in_mhz
For embedded reset
controller to calculate delays
Comentarios a estos manuales