Altera POS-PHY Level 2 and 3 Compiler - Manual (Page 29)

© November 2009 Altera Corporation POS-PHY Level 2 and 3 Compiler User Guide
Preliminary
3. Functional Description
The POS-PHY Level 2 and 3 Compiler has two interfaces—an ‘A’ interface and one or
many ‘B’ interfaces.
Table 3–1 shows the possible interfaces.
Figure 3–1 and 3–2 show example interfaces.
1 MegaCore ® function data flow direction is from source to sink, that is, data flows from
a physical layer (PHY) receive source to a link receive sink. A MegaCore function
must have a minimum of one source and one sink interface.
Table 3–1. Possible Interfaces
‘A’ Interface ‘B’ Interface
PHY level 3 (SPHY or MPHY)
PHY level 2 (SPHY or MPHY)
Link level 3 (SPHY or MPHY)
Link level 2 (SPHY or MPHY)
PHY level 3 (SPHY only)
PHY level 2 (SPHY only)
Link level 3 (SPHY only)
Link level 2 (SPHY only)
Atlantic master (SPHY only)
Atlantic slave (SPHY only)
Figure 3–1. Example MegaCore Function Interfaces
'A' Sink
Interface
FIFO
'B1' Source
Interface
FIFO
MegaCore Function
'B2' Source
Interface
FIFO
'B3' Source
Interface
FIFO
'B n'' Source
Interface