Altera Transceiver PHY IP Core Manuel d'utilisateur Page 254

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FPGA Fabric -
Transceiver Interface
Width
PCS-PMA Interface Width
tx_clkout and rx_clkout frequency
Standard Datapath
10G Datapath
50 40 data rate/50
(6)
64 32 data rate/32
(7)
64 64 data rate/64
66 40 data rate/66
Related Information
Stratix V Device Datasheet
Transceiver Clocking in Stratix V Devices
Additional Options Parameters
The parameters on the Additional Options tab control clocking and datapath options. Both bonded (×N)
and non-bonded modes are available. In bonded modes, a single PLL can drive all channels. In non-
bonded modes, each channel may have its own PLL.
(6)
For this datapath configuration, the tx_clkout frequency generated by the Low Latency PHY is the data
rate /40. You must generate a /50 frequency clock from the /40 clock and feed this clock back into the tx_
coreclkin. The rx_clkout frequency generated by the Low Latency PHY is /40 of the data rate. You must
generate a /50 frequency from the recovered clock and feed this back into the rx_coreclkin.
(7)
For this datapath configuration, the tx_clkout frequency generated by the Low Latency PHY is the data
rate/32. You must generate a /64 frequency clock from the /32 clock and feed this clock back into the tx_
coreclkin. The rx_clkout frequency generated by the Low Latency PHY is the data rate/32. You must
generate a /64 frequency from the recovered clock and feed this back into the rx_coreclkin
UG-01080
2015.01.19
Additional Options Parameters
10-7
Low Latency PHY IP Core
Altera Corporation
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