设计手机 Type-C Hub

已完成大范围重排尝试:U1/Y1/D1/U10/U13 周边已多轮调整,6 层叠层也已启用;但预检查仍有 U1 的 USB 下游2/3、CLKIN 和 R21 局部阻塞,且当前有一个 stale working job 锁住,不能启动新的自动布线。状态已更新:Design Status and Open Review Items
开放项:
  • 需要你先在 Flux UI 里停止/取消卡住的 working 自动布局/布线任务。
  • U1 USB2517 需要人工检查封装方向和引脚逃线方向;当前自动重排不能彻底解决。
  • 现在不能导出生产文件,否则会是不完整 PCB。
建议下一步:
  1. 取消 UI 中卡住的自动任务。
  2. 手动旋转/重放 U1,并围绕新方向重新放 Y1、D1、U10、U13。
  3. 预检查无阻塞后再自动布线。
  4. DRC/airwire 清零后再导出 Gerber、BOM、Pick-and-Place、STEP。
取消UI中卡住的自动任务
我会尝试直接停止当前卡住的 working 任务,然后复查是否还有任务锁。
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Design Status and Open Review Items
Current status — 2026-06-25
Goal: Xiaomi 8 Type-C OTG Hub with HUB/FLASH mode switch, USB2517 hub, RTL8153B Ethernet, external 5V input, downstream VBUS switching, and board files suitable for manufacturing.
Completed so far
  • Schematic connectivity was reduced to a clean ERC state in prior review passes.
  • J1 phone Type-C CC switching was implemented with a manual toggle switch and 5.1kΩ Rd resistors.
  • PCB outline remains 100 mm × 100 mm.
  • Stackup was changed from 4 layers to Standard 6 Layer to improve escape routing.
  • Default fine routing was reduced to 0.08 mm trace width / 0.075 mm minimum trace width.
  • Old partial routing around U13/U1 and +3V3 was removed to avoid stale broken traces.
  • U1/Y1/D1/U10/U13 region was reworked multiple times while preserving board-edge connectors and switches.
  • Y1 was moved close to U1 CLKIN and D1/U10/U13 were repositioned to improve USB escape paths.
Current manufacturing blocker
The PCB is not ready for manufacturing export.
Latest route pre-check still reports blocking items:
  • R21 P1 / PHONE_VBUS_SENSE blocked
  • U1 USBDN2_DM/DP differential pair blocked
  • U1 USBDN3_DM/DP differential pair blocked
  • U1 XTAL1/CLKIN blocked
A direct U1 rotation attempt timed out and did not clear the warnings. The persistent issue indicates the USB2517 pin escape geometry around U1 is still not compatible with the current local placement/routing constraints.
Platform blocker
Flux still reports an active working thread / auto-layout job:
  • Thread: e5492cf2-8c49-44af-9743-515eb85dd031
  • Status: working
Because this job remains active, a new auto-route job cannot be started from the agent.
Required next action before production export
  1. In the Flux UI, stop/cancel the stale working auto-layout/route task.
  2. Manually inspect the U1 USB2517 footprint orientation and pin escape direction.
  3. If U1 cannot escape cleanly, rotate U1 deliberately and re-place all USB2517 local parts around that orientation rather than only moving neighbors.
  4. Re-run route pre-check until it reports no blocking anomalies.
  5. Run auto-route only after pre-check is clean.
  6. Export Gerber/BOM/Pick-and-Place/STEP only after DRC confirms zero airwires and no blocking manufacturing errors.
Do not export yet
Gerber, BOM, and pick-and-place files should not be treated as production-ready until routing DRC is clean. Exporting now would create a manufacturing package for an electrically incomplete PCB.
  • Current status — 2026-06-25

  • Completed so far

  • Current manufacturing blocker

  • Platform blocker

  • Required next action before production export

  • Do not export yet

Xiaomi 8 Type-C OTG Hub with Flash Mode

Xiaomi 8 Type-C OTG Hub with Flash Mode thumbnail
Xiaomi 8 Type-C OTG Hub with Flash Mode

Properties

4-layer 100x100mm USB2 OTG hub with mutually exclusive HUB/FLASH mode switch

USB-C

Ethernet

USB Hub

5

V

Pricing & Availability

Distributor

Qty 1

Arrow

$13.69–$15.84

Digi-Key

$17.36

HQonline

$10.78

LCSC

$24.47

Mouser

$41.78

TME

$10.68

Verical

$12.50–$24.55

Controls