
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
12. Stratix V Transceiver Native PHY IP
Core
The Stratix V Transceiver Native PHY IP Core provides direct access to all control and
status signals of the transceiver channels. Unlike other PHY IP Cores, the Native PHY
IP Core does not include an Avalon Memory-Mapped (Avalon-MM) interface.
Instead, it exposes all signals directly as ports. The Stratix VTransceiver Native PHY
IP Core provides the following three datapaths:
■ Standard PCS
■ 10G PCS
■ PMA Direct
You can enable the Standard PCS, the 10G PCS, or both if your design uses the
Transceiver Reconfiguration Controller to change dynamically between the two PCS
datapaths. The transceiver PHY does not include an embedded reset controller. You
can either design custom reset logic or incorporate Altera’s “Transceiver PHY Reset
Controller IP Core” to implement reset functionality.
In PMA Direct mode, the Native PHY provides direct access to the PMA from the
FPGA fabric; consequently, the latency for transmitted and received data is very low.
However, you must implement any PCS function that your design requires in the
FPGA fabric.
Figure 12–1 illustrates the use of the Stratix V Transceiver Native PHY IP Core. As this
figure illustrates, TX PLL and clock data recovery (CDR) reference clocks from the
pins of the device are input to the PLL module and CDR logic. When enabled, the 10G
or Standard PCS drives TX parallel data and receives RX parallel data. When neither
PCS is enabled the Native PHY operates in PMA Direct mode.
Figure 12–1. Stratix V Native Transceiver PHY IP Core
PLLs
PMA
altera_xcvr_native_<dev>
Transceiver Native PHY
Transceiver
Reconfiguration
Controller
Reconfiguration to XCVR
Reconfiguration from XCVR
TX and RX Resets
Calilbration Busy
PLL and RX Locked
RX PCS Parallel Data
TX PCS Parallel Data
CDR Reference Clock
(when neither PCS is enabled)
TX PLL Reference Clock
Serializer/
Clock
Generation
Block
RX Serial Data
to
FPGA fabric
Transceiver
PHY Reset
Controller
TX PMA Parallel Data
RX PMA Parallel Data
TX Serial Data
Serializer
Deserializer
Standard
PCS
(optional)
10G PCS
(optional)
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