Altera Transceiver PHY IP Core - Manual (Page 493)

Table 15-7: General and Datapath Parameters
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:
• basic–select this mode for when none of the
other options are appropriate. You should also
select this mode to enable diagnostics, such as
loopback.
• cpri–select this mode if you intend to
implement CPRI or another protocol that
requires deterministic latency. Altera
recommends that you select the appropriate
CPRI preset for the CPRI protocol.
• gige–select this mode if you intend to
implement either the 1.25 Gbps or 2.5 Gbps
Ethernet protocol. Altera recommends that
you select the appropriate preset for the
Ethernet protocol.
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 .
15-10 Standard PCS Parameters
UG-01080
2015.01.19
Altera Corporation Cyclone V Transceiver Native PHY IP Core Overview
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