如何用chisel3黑盒实例化Xilinx差分时钟缓冲器？

import chisel3._
import chisel3.util._

class ClockBuffer extends Module {
  val io = IO(new Bundle {
    val inputClock = Input(Clock())
    val outputClock = Output(Clock())
  })

  // 实例化Xilinx差分时钟缓冲器的黑盒
  val xilinxClockBuffer = Module(new BlackBox {
    val io = IO(new Bundle {
      val I = Input(Clock())
      val O = Output(Clock())
    })
  })

  // 连接输入和输出时钟信号
  xilinxClockBuffer.io.I := io.inputClock
  io.outputClock := xilinxClockBuffer.io.O
}

object ClockBufferMain extends App {
  chisel3.Driver.execute(args, () => new ClockBuffer)
}