DS506 Datasheet, PDF (16/19 Pages) Xilinx, Inc – LogiCORE IP Endpoint v3.7

LogiCORE IP Endpoint v3.7 for PCI Express^®
Table 9: Receive Transaction Interface Signals (Cont’d)
Name
Direction
Description
trn_rbar_hit_n[6:0]
Output
Receive BAR Hit: Indicates BAR(s) targeted by the current receive
transaction. Active low.
• trn_rbar_hit_n[0] => BAR0
• trn_rbar_hit_n[1] => BAR1
• trn_rbar_hit_n[2] => BAR2
• trn_rbar_hit_n[3] => BAR3
• trn_rbar_hit_n[4] => BAR4
• trn_rbar_hit_n[5] => BAR5
• trn_rbar_hit_n[6] => Expansion ROM Address
Note that, if two BARs are configured into a single 64-bit address, both
corresponding trn_rbar_hit_n bits will be asserted.
trn_rfc_ph_av[7:0]⁽²⁾
Output
Receive Posted Header Flow Control Credits Available: The
number of Posted Header FC credits available to the remote link
partner.
trn_rfc_pd_av[11:0]²
Output
Receive Posted Data Flow Control Credits Available: The number
of Posted Data FC credits available to the remote link partner.
trn_rfc_nph_av[7:0]²
Output
Receive Non-Posted Header Flow Control Credits Available: The
number of Non-Posted Header FC credits available to the remote link
partner.
trn_rfc_npd_av[11:0]²
Output
Receive Non-Posted Data Flow Control Credits Available: The
number of Non-Posted Data FC credits available to the remote link
partner.
trn_rfc_cplh_av[7:0]²
Output
Receive Completion Header Flow Control Credits Available: The
number of Completion Header FC credits available to the remote link
partner.
Note that this value and trn_rfc_cpld_av[11:0] are hypothetical
quantities reflecting credit availability that would be advertised to the
remote link partner if the core were not required to advertise infinite
Completion credits.
trn_rfc_cpld_av[11:0]²
Output
Receive Completion Data Flow Control Credits Available: The
number of Completion Data FC credits available to the remote link
partner.
1. trn_rrem[7:0] is not supported or needed for the 1-lane and 4-lane 32-bit endpoint products.
2. Credit values given to the user are instantaneous quantities, not the cumulative (from time zero) values seen by the remote link partner.
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DS506 April 19, 2010
Product Specification