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phonerail/kicad/PhoneRail-Board2/C5-J1401B.kicad_sch
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(text "CH4 手机位"
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(text "CH5 手机位"
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(text "【载板 C5-J1401B】手机尾插 J1401 对插座 —— CH4/5(方案 D,§13.5)"
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(text "手机主板 J1401 ──原厂「主板→尾插」排线── 本页的 J7x 座 ──> C3-USB 上的 ESD / Rp / 口温 / VBUS 开关。"
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(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "5e88a23a-a708-51d4-8c48-0dd80f39d5ae")
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(text "⚠⚠ 打样前必测(一次性,针尖表笔 + 放大镜):"
(at 12.7 142.24 0)
(effects (font (size 1.905 1.905)) (justify left bottom))
(uuid "170384c4-434c-5cd1-bc7d-0ea4a7aedda3")
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(text " ① 排线插上手机 J1401(不通电),表笔搭屏蔽罩(地),在排线自由端 50 个触点上走一遍,记下哪些是地;"
(at 12.7 146.812 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " ② 对照 §13.4:奇数排的地在第 2,5,7,11,14,16,25 位,偶数排在第 14,18,20,22,25 位。"
(at 12.7 150.876 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "d1cc8872-8206-51fb-84bf-75f16630614f")
)
(text " 这个图案转 180° 后完全不同,所以量出来就唯一确定了排线的映射方向。"
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(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "4957ed69-cf0e-56c7-be7d-fc0e31a92d59")
)
(text " ③ 两个大焊盘(电源触点)哪个通地 = G1;另一个才是 G2(VBUS)。**接反就是 5V 对地短路。**"
(at 12.7 159.004 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "578dd8c8-5ff3-55e6-8130-b4d0bcc59101")
)
(text "本页按 §13.4 的 Hirose 编号连线,排线翻不翻**只影响封装不影响本页**:"
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(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "0c4ba400-562f-5a5e-b0d0-2b64d92961ad")
)
(text "这颗座子无论如何都要自建封装(立创那个是 DIP 绕圈编号,和 Hirose 对不上),"
(at 12.7 169.164 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "2686ecae-f4af-534a-a56b-a9e6d516be0a")
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(text "自建时把「焊盘号 = 经排线看过去的 Hirose 脚号」定死即可,两种候选正好差一个 180° 贴片方向。"
(at 12.7 173.228 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "041d4915-9ae1-5a75-95b9-3afee52ff973")
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(text "⚠ BM24 只有 10 次插拔寿命,而一根排线上有两个插拔点 —— 插上就别反复拔,备件按每台 2 根备。"
(at 12.7 179.324 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "700fb528-0f39-5b77-834d-7a4734cba8a3")
)
(text "⚠ 没画的引脚(音频 / 射频控制 / 各路 VREG / CC2)全部悬空。CC2 必须悬空,只拉一边 CC 手机才判得出方向。"
(at 12.7 185.42 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "97cc906c-5808-5006-bd35-8b8b14b4551c")
)
(text " TP91x 是高通调试串口(pin24 TX / pin29 RX),1.8V 电平,不能直接接 ESP32,默认不焊线。"
(at 12.7 189.484 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "15bfbfff-43b2-537b-823a-3d96fbe9816f")
)
(text "⚠⚠ 打样前必测(一次性,针尖表笔 + 放大镜):"
(at 12.7 129.54 0)
(effects (font (size 1.905 1.905)) (justify left bottom))
(uuid "3b71f7e3-7a2f-5654-8e44-d5d7b3112837")
)
(text "① 排线插上手机 J1401(不通电),表笔搭屏蔽罩(地),"
(at 12.7 134.112 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "3d1c0677-80ba-513c-8bec-288797d80407")
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(text " 在排线自由端 50 个触点上走一遍,记下哪些是地;"
(at 12.7 138.176 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "7f4b1185-743f-58eb-83a4-16a946c46738")
)
(text "② 对照 §13.4:奇数排的地在第 2,5,7,11,14,16,25 位,"
(at 12.7 142.24 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " 偶数排在第 14,18,20,22,25 位。转 180° 后图案完全不同,"
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(text " 所以量出来就唯一确定了排线的映射方向。"
(at 12.7 150.368 0)
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(text "③ 两个大焊盘(电源触点)哪个通地 = G1,另一个才是 G2(VBUS)。"
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(text " 接反就是 5V 对地短路。"
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(text "本页按 §13.4 的 Hirose 编号连线,排线翻不翻只影响封装:"
(at 12.7 164.592 0)
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(text "这颗座子无论如何都要自建封装(立创那个是 DIP 绕圈编号),"
(at 12.7 168.656 0)
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(text "自建时把「焊盘号 = 经排线看过去的 Hirose 脚号」定死即可,"
(at 12.7 172.72 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "两种候选正好差一个 180° 贴片方向。"
(at 12.7 176.784 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "⚠ BM24 只有 10 次插拔寿命,而一根排线上有两个插拔点。"
(at 158.75 129.54 0)
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(text " 插上就别反复拔,备件按每台 2 根备。"
(at 158.75 133.604 0)
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(text "⚠ 没画的引脚(音频 / 射频控制 / 各路 VREG / CC2)全部悬空。"
(at 158.75 139.7 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " CC2 必须悬空 —— 只拉一边 CC,手机才判得出插入方向。"
(at 158.75 143.764 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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)
(text "⚠ 调试串口(pin24 TX / pin29 RX)故意不引:1.8V 电平,"
(at 158.75 149.86 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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)
(text " 接 ESP32 要加电平转换;而且 pin29 夹在两个地脚中间,"
(at 158.75 153.924 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
(uuid "aca749d1-5239-52bb-9407-c691a1b03552")
)
(text " 引出来会把这一片排版挤垄。真要用就是一次改板。"
(at 158.75 157.988 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "⚠⚠ 打样前必做:买一块原厂尾插小板当量具(§13.5)"
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(text "我们这颗座子接的就是原厂小板上那颗座子的位置 —— 同一根排线的同一端。"
(at 12.7 134.112 0)
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(text "所以「物理位置 ↔ 网络」照抄原厂小板的就一定对,不用管 Hirose 编号,"
(at 12.7 138.176 0)
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(text "也不用管排线翻没翻。裸板上从 USB-C 母座(0.5mm 间距,好扎)打通断,"
(at 12.7 142.24 0)
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(text "量出 D+/D−/VBUS/CC1/GND/口温 各通到 BM24 座的哪个物理位置,抄进封装即可。"
(at 12.7 146.304 0)
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(text "顺带一次解决:座子是公头还是母座、口温电阻到底多大、ESD 用什么 —— 全照抄。"
(at 12.7 150.368 0)
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(text "(公开渠道没有小板资料:我们这份 PDF 44 页全是主板,mobilerdx 的「完整包」"
(at 12.7 156.464 0)
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(text " 也是同一套,vinafix 上 dipper 只有 Mi 8 Lite / Mi 8X。2026-09-04 查过。)"
(at 12.7 160.528 0)
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(text "CH4 手机位"
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(text "CH5 手机位"
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(text "引脚映射(2026-09-04 实测 + 推导,§13.5):原厂排线在摊平的平面里是**恒等映射**"
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(text "(上方内侧↔下方内侧、上方外侧↔下方外侧,从左到右一一导通,用户实测);"
(at 12.7 134.112 0)
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(text "两个公头在同一面、相差 180°。于是 J1401(排, m) ↔ 本座子(同排, 26-m):"
(at 12.7 138.176 0)
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(text " 奇数脚 N → 50-N 偶数脚 N → 52-N"
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(effects (font (size 1.905 1.905)) (justify left bottom))
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(text "即 D+ 46→6、D- 48→4、CC1 30→22、口温 38→14;地 12 个 → 1,2,8,12,16,19,23,24,29,37,41,47。"
(at 12.7 148.336 0)
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(text "(这条推导不需要知道「哪一排是奇数排」—— 两边都用 Hirose 脚号表达,那个未知量抵消了。)"
(at 12.7 152.4 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "⚠ 电源触点约定:符号 pin51 = Hirose pin1/2 那一端,pin52 = pin49/50 那一端。"
(at 12.7 159.512 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " J1401 的 G1(地) 在它的 pin1/2 端,经上面的反序落到我们这颗的 pin49/50 端"
(at 12.7 163.576 0)
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(text " → **52 = GND,51 = VBUS**。⚠ 首件仍要实测,接反就是 5V 对地短路。"
(at 12.7 167.64 0)
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(text "⚠ 机械:两个公头同一面 → 两个母座都得朝上、大致共面。"
(at 158.75 129.54 0)
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(text " 而 J1401 朝天、本座子也朝天、载板在手机下面,所以排线必须走"
(at 158.75 133.604 0)
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(text " **台阶式下折**(下 90° 再上 90°,净旋转为零,公头仍朝下),"
(at 158.75 137.668 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " **不能走 U 形回折**(会把面翻过来,插不进去)。"
(at 158.75 141.732 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " → 本座子要放在手机轮廓之外、J1401 出线的那一侧,PCB 摆位时定死。"
(at 158.75 145.796 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "⚠ BM24 只有 10 次插拔寿命,而一根排线上有两个插拔点 —— 插上就别反复拔。"
(at 158.75 152.908 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "⚠ 没画的引脚(音频 / 射频控制 / 各路 VREG / CC2)全部悬空。"
(at 158.75 159.004 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text " CC2 必须悬空 —— 只拉一边 CC,手机才判得出插入方向。"
(at 158.75 163.068 0)
(effects (font (size 1.587 1.587)) (justify left bottom))
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(text "⚠ 调试串口(pin24 TX / pin29 RX)故意不引:1.8V 电平,接 ESP32 要电平转换。"
(at 158.75 167.132 0)
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