新手请教下,xilinx Spartan-6 的原语 OSERDES2,怎么两个级联?
要用到串行的8位数据,转换成并行的,而这个原语只能转4位。
- // OSERDES2: Output SERial/DESerializer
- // Spartan-6
- // Xilinx HDL Language Template, version 14.7
- OSERDES2 #(
- .BYPASS_GCLK_FF("FALSE"), // Bypass CLKDIV syncronization registers (TRUE/FALSE)
- .DATA_RATE_OQ("DDR"), // Output Data Rate ("SDR" or "DDR")
- .DATA_RATE_OT("DDR"), // 3-state Data Rate ("SDR" or "DDR")
- .DATA_WIDTH(2), // Parallel data width (2-8)
- .OUTPUT_MODE("SINGLE_ENDED"), // "SINGLE_ENDED" or "DIFFERENTIAL"
- .SERDES_MODE("NONE"), // "NONE", "MASTER" or "SLAVE"
- .TRAIN_PATTERN(0) // Training Pattern (0-15)
- )
- OSERDES2_inst (
- .OQ(OQ), // 1-bit output: Data output to pad or IODELAY2
- .SHIFTOUT1(SHIFTOUT1), // 1-bit output: Cascade data output
- .SHIFTOUT2(SHIFTOUT2), // 1-bit output: Cascade 3-state output
- .SHIFTOUT3(SHIFTOUT3), // 1-bit output: Cascade differential data output
- .SHIFTOUT4(SHIFTOUT4), // 1-bit output: Cascade differential 3-state output
- .TQ(TQ), // 1-bit output: 3-state output to pad or IODELAY2
- .CLK0(CLK0), // 1-bit input: I/O clock input
- .CLK1(CLK1), // 1-bit input: Secondary I/O clock input
- .CLKDIV(CLKDIV), // 1-bit input: Logic domain clock input
- // D1 - D4: 1-bit (each) input: Parallel data inputs
- .D1(D1),
- .D2(D2),
- .D3(D3),
- .D4(D4),
- .IOCE(IOCE), // 1-bit input: Data strobe input
- .OCE(OCE), // 1-bit input: Clock enable input
- .RST(RST), // 1-bit input: Asynchrnous reset input
- .SHIFTIN1(SHIFTIN1), // 1-bit input: Cascade data input
- .SHIFTIN2(SHIFTIN2), // 1-bit input: Cascade 3-state input
- .SHIFTIN3(SHIFTIN3), // 1-bit input: Cascade differential data input
- .SHIFTIN4(SHIFTIN4), // 1-bit input: Cascade differential 3-state input
- // T1 - T4: 1-bit (each) input: 3-state control inputs
- .T1(T1),
- .T2(T2),
- .T3(T3),
- .T4(T4),
- .TCE(TCE), // 1-bit input: 3-state clock enable input
- .TRAIN(TRAIN) // 1-bit input: Training pattern enable input
- );
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