0hmX/am62l-lpddr4-breakout-repro

This code defines the physical layout, pin assignments, and power connections for the TI AM62L system-on-chip with DDR4/LPDDR4 memory, including detailed component placement, decoupling capacitors, and signal traces for a 6-layer PCB design.

Version: 1.0.14
License: unset
Stars: 0

pcbpack-fixed-bga-bottom-decoupling-repro.circuit.tsx

import { Fragment } from "react"

type ReproProps = {
  fixedBga?: boolean
  capacitorCount?: number
  boardWidth?: string
  boardHeight?: string
}

const bgaPinPairs = [
  [15, 16],
  [21, 22],
  [9, 10],
  [27, 28],
  [3, 4],
  [33, 34],
  [13, 14],
  [19, 20],
  [7, 8],
  [25, 26],
  [1, 2],
  [31, 32],
] as const

/**
 * Minimal control/repro for layer-aware pcbPack behavior.
 *
 * Default: the top BGA is fixed at the origin, matching the AM62L floorplan.
 * Control: inject { "fixedBga": false } to match Core's passing reference test.
 */
export default ({
  fixedBga = true,
  capacitorCount = 2,
  boardWidth = "16mm",
  boardHeight = "14mm",
}: ReproProps = {}) => {
  if (capacitorCount < 1 || capacitorCount > bgaPinPairs.length) {
    throw new Error(`capacitorCount must be between 1 and ${bgaPinPairs.length}`)
  }

  const bgaPosition = fixedBga ? { pcbX: 0, pcbY: 0 } : {}

  return (
    <board
      width={boardWidth}
      height={boardHeight}
      pcbPack
      pcbGap="0.2mm"
      routingDisabled
    >
      <chip
        name="U1"
        footprint="bga36_grid6x6_p0.8mm_pad0.35mm_circularpads"
        {...bgaPosition}
      />

      {bgaPinPairs.slice(0, capacitorCount).map(([powerPin, groundPin], index) => {
        const name = `C${index + 1}`
        return (
          <Fragment key={name}>
            <capacitor
              name={name}
              capacitance="100nF"
              footprint="0402"
              layer="bottom"
            />
            <trace from={`U1.pin${powerPin}`} to={`${name}.pin1`} />
            <trace from={`U1.pin${groundPin}`} to={`${name}.pin2`} />
          </Fragment>
        )
      })}
    </board>
  )
}