Altera QDRII SRAM Controller MegaCore Function Manual do Utilizador descarregar pdf (Página 57)

Altera Corporation MegaCore Version 9.1 3–25

November 2009 QDRII SRAM Controller MegaCore Function User Guide

Functional Description

Table 3–6 shows the datapath.

control_wpsn

– Input Write signal from the pipeline and resynchronization logic.

dll_delay_ctrl

5:0 Input

DLL delay control from the top-level design to shift the

CQ by a

nominal 90 degrees.

capture_clock

– Output Capture clocks (CQ into soft logic) to the pipeline and

resynchronization logic.

captured_data

35:0 Output Captured data—data after the IO to pipeline and

resynchronization logic.

Table 3–5. Datapath Interface Signals (Part 2 of 2)

Name

Width

(Bits)

Direction Description

Table 3–6. Pipeline & Resynchronization Logic Signals

Name

Width

(Bits)

Direction Description

avl_control_a_rd

17:0 Input Read address from the control logic.

avl_control_a_wr

17:0 Input Write address from the control logic.

avl_control_bwsn

3:0 Input Byte enable from the control logic.

avl_control_rpsn

– Input Read from the control logic.

avl_control_wdata

35:0 Input Write data from the control logic.

avl_control_wpsn

– Input Write from the control logic.

capture_clock

– Input Clocks from the datapath (CQ into soft logic).

captured_data

35:0 Input Data captured by IO from datapath.

clk

– Input Clock.

reset

– Input Reset.

control_a_rd

17:0 Output Read address to datapath.

control_a_wr

17:0 Output Write address to datapath.

control_bwsn

3:0 Output Byte enable to datapath.

control_rdata

35:0 Output Read data after resynchronization to control logic.

control_rpsn

– Output Read to datapath.

control_wdata

35:0 Output Write data to datapath.

control_wpsn

– Output Write to datapath.

training_done

– Output Initial training done to control logic.

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