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Ethernet AVB Endpoint User Guide www.xilinx.com 53
UG492 July 23, 2010
Core Interfaces
PLB Interface
Table 5-9 defines the signals on the PLB bus. For detailed information, see the IBM PLB
specification. Shaded rows represent signals not used by this core; inputs are ignored and
outputs are tied to a constant. These signals are synchronous to PLB_clk; see “Clocks and
Resets” for additional information.
Table 5-9: PLB Signals
PIN Name Direction Description
PLB_clk Input Reference clock for the PLB
PLB_reset Input Reset for the PLB, synchronous to
PLB_clk
PLB_ABus[0:31] input PLB address bus
PLB_UABus[0:31] Input PLB upper address bus
PLB_PAvaild Input PLB primary address valid indicator
PLB_SAValid Input Unused. PLB secondary address valid
indicator.
PLB_rdPrim Input Unused. PLB secondary to primary read
request indicator.
PLB_wrPrim Input Unused. PLB secondary to primary write
request indicator.
PLB_masterID
[0:log2(NUM_MASTERS)]
Input PLB current master identifier
PLB_abort Input PLB abort request indicator
PLB_busLock Input Unused. PLB bus lock.
PLB_RNW Input PLB read not write
PLB_BE[0:3] Input PLB byte enables
PLB_MSize[0:1] Input PLB master data bus size
PLB_size[0:3] Input PLB transfer size. Only support size 0.
PLB_type[0:2] Input PLB transfer type. Only support type 0.
PLB_TAttribute[0:15] Input Unused. PLB transfer attribute bus.
PLB_lockErr Input Unused. PLB lock error indicator.
PLB_wrDBus[0:31] Input PLB write data bus
PLB_wrBurst Input PLB write burst transfer indicator.
PLB_rdBurst Input PLB read burst transfer indicator.
PLB_rdPendReq Input Unused. PLB pending read request
priority.
PLB_wrPendReq Input Unused. PLB pending write request
priority.
PLB_rdPendPri[0:1] Input Unused. PLB pending read bus request
indicator.