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== General ==
== General ==
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The Wii U motherboard exposes several test points, primarily on the bottom of the motherboard (CPU heatsink facing down).
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The Wii U motherboard exposes several test points, primarily on the bottom of the motherboard (Opposite side of the SoC).
== EXI0 ==
== EXI0 ==
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* TP101 - CLK
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* TP100 - MOSI (Device in, Wii U out.) (impedance: 40ohm)
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* TP176 - MISO (Device out, Wii U in)
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* TP101 - CLK (impedance: 40ohm)
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* Test point between TP100 and TP176 - MOSI (Device in, Wii U out)
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* TP102 - CS (impedance: high)
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* TP176 - MISO (Device out, Wii U in) (impedance: 476ohm)
== DEBUG ==
== DEBUG ==
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* TP48 - DEBUG6
* TP48 - DEBUG6
* TP49 - DEBUG7
* TP49 - DEBUG7
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== SMC ==
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* TP15 - Pin 18, 1v adjust
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* TP16 - Pin 29, 1v adjust
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* TP37 - Pin 27, 1v adjust
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* TP38 - Pin 17, 1v adjust
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* TP39 - Pin 20, front USB enable
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* TP80 - Pin 15, rear USB enable
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* TP88/TP152 - Pin 35, Optical power enable
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* TP95 - Pin 22, front USB power fault
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* TP109 - Pin 16, rear USB fault
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* TP144 - SoC nRST, SoC resets when pulled down by a 3.3Kohm resistor.
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* TP145 - Connection between RTC and SMC, SMC nRST, sensitive to measurement (power LED reverts to red, but SoC continues running)
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* TP171 - Pin 28, Disc present
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* TP175 - Connected to RTC and SMC, pulses between 3.3v and 0v at 1Hz
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=== I2C ===
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* TP153 - SMC SCL
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* TP154 - SMC SDA
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=== Wireless Modules ===
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* TP146 - SMC Pin 1, to RTC, Bluetooth, and 5GHz module. Front LED blinks red when pulled low. BT and 5GHz module reset
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* TP155 - SMC Pin 14, WiFi module Pin 14. When pulled low in vWii, system powers off(???)
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* TP156 - SMC Pin 23, BT module PON/POFF signal
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* TP157 - SMC Pin 19, 5GHz module PON signal
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* TP172 - SMC Pin 36, BT module Pin 13. Standby Power-On reset?
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* TP173 - SMC Pin 37, WiFi module Pin 7. Standby Power-On reset?
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* TP174 - SMC Pin 38, 5GHz module Pin 16. Standby Power-On reset?
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=== Faceplate ===
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* TP9 - Fake Power Button (active low/pullup, pressed=0.0v, not pressed=3.3v), connected to SMC Pin 33 and RTC. Eject button will also pulse this low.
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* TP65/TP2003 - LED_B transistor gate, SMC Pin 39
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* TP66/TP2000 - LED_R, SMC Pin 40
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* TP67 - LED_W
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* TP68 - Not connected to any buttons, connected to SMC Pin 21. When pulled low while powered off, power LED turns orange and eject button is not responsive
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* TP70/TP2002 - Power Button, SMC Pin 13 (active low/pullup, pressed=0.0v, not pressed=3.3v)
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* TP170 - Eject Button, Pin 35 (active low/pullup, pressed=0.0v, not pressed=3.3v)
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* TP2001 - LED_Y, SMC Pin 36
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* TP2004 - GND
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== Disc Drive ==
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* TP2 - Disc drive 3.3V rail
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* TP3 - Disc drive 5V rail
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* TP4 - Disc drive 12V rail
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* TP5 - Disc eject (pulse high for eject)
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* TP18 - Disc presence sensor (receiver)
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* TP19 - Disc presence sensor (emitter)
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* TP76 - Disc inserted (active low)
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* TP114 - Disc drive 3.3V always-on rail
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== SD Card ==
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* TP21 - CLK (Pin5)
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* TP22 - CMD (Pin2)
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* TP23 - DAT0 (Pin7)
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* TP24 - DAT1 (Pin8)
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* TP25 - DAT2 (Pin9)
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* TP26 - CD/DAT3 (Pin1)
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* TP27 - CD1 (Card-Detect signal)
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* TP28 - WP2 (Write-Protect signal)
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* TP29 - VDD
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* TP30 - GND
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== Voltage Related ==
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* TP31 - Sensor Bar GND PWM
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* TP32 - Sensor Bar 12v
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* TP73 - RTC Battery 3v3
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* TP111 - HDMI 5v supply
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* TP115 - 15V DC plug positive
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* TP116 - 15V DC plug positive
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* TP117 - 15V DC plug negative (0V)
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* TP118 - 15V DC plug negative (0V)
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* TP120 - 15V power rail B
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* TP122 - Always-on 3v3 power rail
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* TP123 - 1.5v power rail B
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* TP125 - ARM/IOP PGOOD
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* TP126 - ARM/IOP LV5065 TD1/TD2?
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* TP127 - ARM/IOP/GPU power rail, 1.0v
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* TP128 - ARM/IOP/GPU power rail GND
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* TP129 - PPC power rail, 1.15v
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* TP130 - PPC power rail GND
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* TP132 - 3v3/12v PGOOD
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* TP135 - 5v power rail A
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* TP136 - 12v power rail
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* TP137 - 3v3 power rail B ref GND
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* TP138 - 3v3 power rail B
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* TP139 - WiFi module 3v3
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* TP141 - Connected to RTC. WiFi module 3v3 enable.
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* TP142 - 3v3 power rail for HDMI Encoder
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* TP147 - Connected to RTC and pin4 of U1041 (ABLIC). 15v PFET enable.
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* TP148 - Connected to RTC and Q1093 gate. Makes its way to U1041 Pin13 (ABLIC). When pulled low by 3.3kohm resistor, front LED blinks red until 15V unplug+replug. Must be pulled up to 3v3 by 10kOhm resistor, otherwise front LED blinks red upon pressing power.
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* TP149 - Connected to LV5066 pin2 (EN) and RTC. 1.5v enable.
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* TP158 - 1.5v power rail A
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* TP160 - GND
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* TP161 - GND
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* TP162 - 1.5v power rail A ref GND
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* TP163 - 12v power rail ref GND
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* TP164 - Always-on 3v3 ref GND
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* TP165 - 15V power rail B ref GND
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* TP166 - 5v power rail A ref GND
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* TP166 - 1.5v power rail B ref GND
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* TP168 - 3v3 power rail C
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* TP169 - 3v3 power rail C ref GND
== Misc/Unk ==
== Misc/Unk ==
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* TP9 - Fake Power Button (active low/pullup, pressed=0.0v, not pressed=3.3v), connected to SMC and RTC. Eject button will also pulse this low.
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* TP1 - wire goes all the way down near RTC? Also connects to SoC.
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* TP70 - Power Button (active low/pullup, pressed=0.0v, not pressed=3.3v)
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* TP6 - To video chip and SoC
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* TP102 - Not EXI0?
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* TP7 - Fan Pin 3
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* TP144 - Reset? Or functions like one when pulled down by a 3.3Kohm resistor.
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* TP8 - U13 pin4
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* TP145 - Connection between RTC and SMC, weirdly sensitive to measurement (power LED reverts to red, but SoC continues running)
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* TP10 - HDMI HPD
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* TP127 - ARM/IOP power rail?
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* TP11 - Direct to SoC, no other connections. (impedance: 0.6ohm)
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* TP170 - Eject Button (active low/pullup, pressed=0.0v, not pressed=3.3v)
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* TP12 - Direct to SoC, no other connections. (impedance: 20ohm, measures: 1V?)
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* TP13 - Direct to SoC, no other connections. (impedance: high)
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* TP14 - Direct to SoC, no other connections. (impedance: high)
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* TP20 - Direct to SoC, no other connections. (impedance: 1Megohm)
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* TP33 - Sensor Bar related
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* TP34 - DRAM (U2) VREFDQ (0v7)
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* TP35 - DRAM (U2) "ZQ"
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* TP36 - DRAM (U3) VREFDQ (0v7)
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* TP56 - Direct to SoC, no other connections. (impedance: high)
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* TP57 - Direct to SoC, no other connections. (impedance: high)
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* TP58 - DRAM (U3) "ZQ"
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* TP59 - DRAM (U4) "ZQ"
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* TP60 - DRAM (U4) VREFDQ (0v7)
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* TP61 - DRAM (U5) "ZQ"
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* TP62 - DRAM (U5) VREFDQ (0v7)
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* TP64 - To U1014 (comparator?) pin12
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* TP69 - Direct to SoC, no other connections. On WUP-DEV-X9, it resides near the second drive connector and is connected to the Classic Controller board (with an MCU between it?). Can be used with a Gamecube Controller. (impedance: high, measures: 3.3v)
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* TP78 - Fan Pin1
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* TP83 - Direct to video chip.
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* TP84 - DDC I2C SDA
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* TP86 - Direct to SoC, no other connections. Lots of capacitors? Reference voltage? 1.036v
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* TP87 - Direct to SoC, no other connections. Lots of capacitors? Reference voltage? 0.753v
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* TP99 - Direct to DRH, no other connections.
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* TP110 - DDC I2C SCL
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* TP151 - Connected to transistor output, goes to SoC
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* TP177 - RTC (Top) Pin 7
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* TP179 - Direct to DRH, pullup resistor?
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* TP187 - LV5064 pin21 (and more?)
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* TP191 - Direct to SoC, no other connections. Nearby Espresso JTAG vias.
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* TP1000 - Direct to SoC, no other connections. (impedance: 40ohm)
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* TP1001 - Direct to SoC, no other connections. (impedance: 40ohm)
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* TP1002 - Direct to SoC, no other connections. (impedance: 40ohm)
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* TP1003 - Direct to SoC, no other connections. (impedance: 40ohm)
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* TP1004 - LV5064 pin10, temp sensing? direct to SoC
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* TP1005 - LV5064 pin11, temp sensing? direct to SoC
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* TP1006 - LV5064 pin12, temp sensing? direct to SoC
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* TP1007 - LV5064 pin13, temp sensing? direct to SoC
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* TP1008 - LV5064 pin14, temp sensing? direct to SoC
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* TP1010 - LV5064 pin9, temp sensing? direct to SoC
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* TP3000 - Only seen on WUP-DEV-X9, near DRAM
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* TP3001 - Only seen on WUP-DEV-X9, near DRAM
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* TP3002 - Only seen on WUP-DEV-X9, near DRAM
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* TP3003 - Only seen on WUP-DEV-X9, near DRAM
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* TP3004 - Only seen on WUP-DEV-X9, near DRAM
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* TP3005 - Only seen on WUP-DEV-X9, near DRAM
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* TP3006 - Only seen on WUP-DEV-X9, near DRAM
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* TP3007 - Only seen on WUP-DEV-X9
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* TP3008 - Only seen on WUP-DEV-X9
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* TP3009 - Only seen on WUP-DEV-X9
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* TP3010 - Only seen on WUP-DEV-X9
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* TP3011 - Only seen on WUP-DEV-X9
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* TP3012 - Only seen on WUP-DEV-X9
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* TP3013 - Only seen on WUP-DEV-X9
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* TP3020 - Only seen on WUP-DEV-X9, emerges from under left WiFi card.
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* TP3021 - Only seen on WUP-DEV-X9, emerges from under left WiFi card.
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* TP3022 - Only seen on WUP-DEV-X9
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* TP4000 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: 40ohm, measures: 0v)
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* TP4001 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: high, measures: 3.3v)
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* TP4002 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: 40ohm, measures: 0v)
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* TP4003 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: high, measures: 3.3v)
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* TP4004 - ???. Only on WUP-30 and later. By the 2.4GHz WiFi module and goes to pin 2 on the (unpopulated) P15.
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=== Removed/Dev Testpoints ===
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Some testpoints can be seen on the WUP-DEV-X9 and CAT-HDD-X5 daughterboard which fit into numeric gaps in WUP-01's testpoints. There are some discrepancies/overlaps in CAT-HDD-X5 testpoints, however.
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* TP43 - present on CAT-HDD-X5, EXI_INT
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* TP45 - present on CAT-HDD-X5, EXI_CS
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* TP47 - present on CAT-HDD-X5, EXI_CLK
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* TP48 - present on CAT-HDD-X5, EXI_DO
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* TP50 - present on CAT-HDD-X5, EXI_DI
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* TP53 - present on CAT-HDD-X5, no label
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* TP55 - present on CAT-HDD-X5, no label
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* TP57 - present on CAT-HDD-X5, no label
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* TP58 - present on CAT-HDD-X5, V_IN
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* TP62 - present on CAT-HDD-X5, V_5.0
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* TP68 - present on CAT-HDD-X5, V_1.2
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* TP72 - present on CAT-HDD-X5, V_2.5
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* TP74 - present on CAT-HDD-X5, V_3.3
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* TP1001 - present on CAT-HDD-X5, SEL_CS
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* TP1002 - present on CAT-HDD-X5, SEL_WP
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* TP1003 - present on CAT-HDD-X5, SDIO_D3
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* TP1004 - present on CAT-HDD-X5, SDIO_D2
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* TP1005 - present on CAT-HDD-X5, SDIO_D1
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* TP1006 - present on CAT-HDD-X5, SDIO_D0
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* TP1007 - present on CAT-HDD-X5, SDIOCMD
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* TP1008 - present on CAT-HDD-X5, SDIOCLK
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* TP1009 - present on CAT-HDD-X5, POWER_SW
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* TP1010 - present on CAT-HDD-X5, FPOFF_SRQ
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* TP1011 - present on CAT-HDD-X5, DCDC_OFF
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* TP1012 - present on CAT-HDD-X5, VDD_RSTOUT
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* TP1013 - present on CAT-HDD-X5, VDD1
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* TP1014 - present on CAT-HDD-X5, VDD2