Visible to Intel only — GUID: nik1398984229179
Ixiasoft
Visible to Intel only — GUID: nik1398984229179
Ixiasoft
14.6. Standard PCS Parameters
The following figure shows the complete datapath and clocking for the Standard PCS. You use parameters available in the GUI to enable or disable the individual blocks in the Standard PCS.
The following table describes the general and datapath options for the Standard PCS.
Parameter |
Range |
Description |
---|---|---|
Standard PCS protocol mode |
basic cpri gige |
Specifies the protocol that you intend to implement with the Native PHY. The protocol mode selected guides the MegaWizard in identifying legal settings for the Standard PCS datapath. Use the following guidelines to select a protocol mode:
|
Standard PCS/PMA interface width |
8, 10,16, 20 |
Specifies the width of the datapath that connects the FPGA fabric to the PMA. The transceiver interface width depends upon whether you enable 8B/10B. To simplify connectivity between the FPGA fabric and PMA, the bus bits used are not contiguous for 16 and 32bit buses. Refer to Active Bits for Each Fabric Interface Width for the bits used. |
FPGA fabric/Standard TX PCS interface width |
8, 10,16, 20, 32, 40 |
Shows the FPGA fabric to TX PCS interface width which is calculated from the Standard PCS/PMA interface width . |
FPGA fabric/Standard RX PCS interface width |
8, 10,16, 20, 32, 40 |
Shows the FPGA fabric to RX PCS interface width which is calculated from the Standard PCS/PMA interface width . |
Enable ‘Standard PCS’ low latency mode |
On/Off |
When you turn this option On, all PCS functions are disabled except for the phase compensation FIFO, byte serializer and byte deserializer. This option creates the lowest latency Native PHY that allows dynamic reconfigure between multiple PCS datapaths. |