Hardware/Testpoints
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General
The Wii U motherboard exposes several test points, primarily on the bottom of the motherboard (CPU heatsink facing down).
EXI0
- TP100 - MOSI (Device in, Wii U out. Next to 176.) (impedance: 40ohm)
- TP101 - CLK (impedance: 40ohm)
- TP102 - CS (impedance: high)
- TP176 - MISO (Device out, Wii U in) (impedance: 476ohm)
DEBUG
These pins are set to various 8-bit values to indicate the current stage of boot0.
- TP50 - DEBUG0
- TP51 - DEBUG1
- TP52 - DEBUG2
- TP53 - DEBUG3
- TP55 - DEBUG4
- TP54 - DEBUG5
- TP48 - DEBUG6
- TP49 - DEBUG7
Disc Drive
- TP2 - Disc drive 3.3V rail
- TP3 - Disc drive 5V rail
- TP4 - Disc drive 12V rail
- TP5 - Disc eject (pulse high for eject)
- TP18 - Disc presence sensor (receiver)
- TP19 - Disc presence sensor (emitter)
- TP76 - Disc inserted (active low)
- TP114 - Disc drive 3.3V always-on rail
Misc/Unk
- TP1 - wire goes all the way down near RTC? Also connects to SoC.
- TP6 - To video chip and SoC
- TP7 - Fan Pin3
- TP8 - U13 pin4
- TP9 - Fake Power Button (active low/pullup, pressed=0.0v, not pressed=3.3v), connected to SMC Pin33 and RTC. Eject button will also pulse this low.
- TP10 - To video chip (and elsewhere?)
- TP11 - Direct to SoC, no other connections. (impedance: 0.6ohm)
- TP12 - Direct to SoC, no other connections. (impedance: 20ohm, measures: 1V?)
- TP13 - Direct to SoC, no other connections. (impedance: high)
- TP14 - Direct to SoC, no other connections. (impedance: high)
- TP15 - Connects to SMC Pin18, regulator-related?
- TP16 - Connects to SMC Pin29, regulator-related?
- TP20 - Direct to SoC, no other connections. (impedance: 1Megohm)
- TP21 - SDCard CLK (Pin5)
- TP22 - SDCard CMD (Pin2)
- TP23 - SDCard DAT0 (Pin7)
- TP24 - SDCard DAT1 (Pin8)
- TP25 - SDCard DAT2 (Pin9)
- TP26 - SDCard CD/DAT3 (Pin1)
- TP27 - SDCard CD1
- TP28 - SDCard WP2
- TP29 - SDCard VDD
- TP30 - SDCard GND
- TP31 - Composite related?
- TP32 - Composite related?
- TP33 - Composite related?
- TP34 - Connects to RAM module?
- TP35 - Connects to RAM module?
- TP36 - Connects to RAM module?
- TP37 - Connects to SMC Pin27, regulator-related?
- TP38 - Connects to SMC Pin17, regulator-related?
- TP39 - Connects to SMC Pin20, front USB enable
- TP56 - Direct to SoC, no other connections. (impedance: high)
- TP57 - Direct to SoC, no other connections. (impedance: high)
- TP58 - Connects to RAM module?
- TP59 - Connects to RAM module?
- TP60 - Connects to RAM module?
- TP61 - Connects to RAM module?
- TP62 - Connects to RAM module?
- TP64 - To U1014 (comparator?) pin12
- TP65 - TP2003
- TP66 - LED_R, TP2000
- TP67 - to front faceplate
- TP68 - to front faceplate, not connected to any buttons. When pulled low while powered off, power LED turns orange and eject button is not responsive?
- 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)
- TP70 - TP2002
- TP73 - backup battery 3v3?
- TP78 - Fan Pin1
- TP80 - SMC Pin15, rear USB enable
- TP83 - Direct to video chip.
- TP84 - To HDMI connector?
- TP86 - Direct to SoC, no other connections. Lots of capacitors? Reference voltage? 1.036v
- TP87 - Direct to SoC, no other connections. Lots of capacitors? Reference voltage? 0.753v
- TP88 - SMC Pin35, connected to TP152, Optical power enable
- TP95 - SMC Pin22, front USB power fault
- TP99 - Direct to DRH, no other connections.
- TP109 - SMC Pin16, rear USB fault
- TP110 - Wire goes past video chip away from SoC.
- TP111 - To HDMI connector?
- TP115 - 15V DC plug positive
- TP116 - 15V DC plug positive
- TP117 - 15V DC plug negative (0V)
- TP118 - 15V DC plug negative (0V)
- TP120 - 15V power rail B
- TP122 - Always-on 3v3 power rail
- TP123 - 1.5v power rail B
- TP125 - ARM/IOP PGOOD
- TP126 - ARM/IOP LV5065 TD1/TD2?
- TP127 - ARM/IOP power rail? 1.0v
- TP128 - ARM/IOP GND
- TP129 - ??? power rail, 1.15v
- TP130 - ??? GND
- TP132 - to comparators?
- TP135 - 5v power rail A
- TP136 - 12v power rail
- TP137 - 3v3 power rail B ref GND
- TP138 - 3v3 power rail B
- TP139 - WiFi module 3v3
- TP141 - Connected to RTC. Pulled up by Q1080?
- TP142 - 3v3 power rail for HDMI Encoder
- TP144 - Reset? Or functions like one when pulled down by a 3.3Kohm resistor.
- TP145 - Connection between RTC and SMC, SMC nRST, sensitive to measurement (power LED reverts to red, but SoC continues running)
- TP146 - SMC Pin1, to RTC, Bluetooth, and 5GHz module
- TP147 - Connected to RTC and pin4 of U1041 (Comparator in?)
- TP148 - Connected to RTC and Q1093 gate. Makes its way to U1041 Pin13 (Comparator ?). When pulled low by 3.3kohm resistor, front LED blinks red until 15V unplug+replug.
- TP149 - Connected to LV5066 pin2 (EN) and RTC. Regulators enable? Pulldown resistor?
- TP151 - Connected to transistor output, goes to SoC
- TP152 - SMC Pin35, connected to TP88. Optical power enable
- TP153 - SMC I2C SCL
- TP154 - SMC I2C SDA
- TP155 - SMC Pin14, WiFi module pin 14
- TP156 - SMC Pin23, BT module pin 12
- TP157 - SMC Pin19, 5GHz module pin 20
- TP158 - 1.5v power rail A
- TP160 - GND
- TP161 - GND
- TP162 - 1.5v power rail A ref GND
- TP163 - 12v power rail ref GND
- TP164 - Always-on 3v3 ref GND
- TP165 - 15V power rail B ref GND
- TP166 - 5v power rail A ref GND
- TP166 - 1.5v power rail B ref GND
- TP168 - 3v3 power rail C
- TP169 - 3v3 power rail C ref GND
- TP170 - Eject Button (active low/pullup, pressed=0.0v, not pressed=3.3v)
- TP171 - SMC Pin28, Disc present
- TP172 - SMC Pin36, BT module pin 13
- TP173 - SMC Pin37, WiFi module pin 7
- TP174 - SMC Pin38, 5GHz module pin 16
- TP175 - Connected to RTC and SMC, pulses between 3.3v and 0v at 1Hz
- TP179 - Direct to DRH, pullup resistor?
- TP187 - LV5064 pin21 (and more?)
- TP191 - Direct to SoC, no other connections. Nearby Espresso JTAG vias.
- TP1000 - Direct to SoC, no other connections. (impedance: 40ohm)
- TP1001 - Direct to SoC, no other connections. (impedance: 40ohm)
- TP1002 - Direct to SoC, no other connections. (impedance: 40ohm)
- TP1003 - Direct to SoC, no other connections. (impedance: 40ohm)
- TP1004 - LV5064 pin10, temp sensing? direct to SoC
- TP1005 - LV5064 pin11, temp sensing? direct to SoC
- TP1006 - LV5064 pin12, temp sensing? direct to SoC
- TP1007 - LV5064 pin13, temp sensing? direct to SoC
- TP1008 - LV5064 pin14, temp sensing? direct to SoC
- TP1010 - LV5064 pin9, temp sensing? direct to SoC
- TP2000 - LED_R, to SMC Pin40, PWM at 100Hz?
- TP2001 - LED_Y, to faceplate
- TP2002 - Power Button (active low/pullup, pressed=0.0v, not pressed=3.3v)
- TP2003 - To some transistor gate?
- TP2004 - GND
- TP3000 - Only seen on WUP-DEV-X9, near DRAM
- TP3001 - Only seen on WUP-DEV-X9, near DRAM
- TP3002 - Only seen on WUP-DEV-X9, near DRAM
- TP3003 - Only seen on WUP-DEV-X9, near DRAM
- TP3004 - Only seen on WUP-DEV-X9, near DRAM
- TP3005 - Only seen on WUP-DEV-X9, near DRAM
- TP3006 - Only seen on WUP-DEV-X9, near DRAM
- TP3007 - Only seen on WUP-DEV-X9
- TP3008 - Only seen on WUP-DEV-X9
- TP3009 - Only seen on WUP-DEV-X9
- TP3010 - Only seen on WUP-DEV-X9
- TP3011 - Only seen on WUP-DEV-X9
- TP3012 - Only seen on WUP-DEV-X9
- TP3013 - Only seen on WUP-DEV-X9
- TP3020 - Only seen on WUP-DEV-X9, emerges from under left WiFi card.
- TP3021 - Only seen on WUP-DEV-X9, emerges from under left WiFi card.
- TP3022 - Only seen on WUP-DEV-X9
- TP4000 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: 40ohm, measures: 0v)
- TP4001 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: high, measures: 3.3v)
- TP4002 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: 40ohm, measures: 0v)
- TP4003 - Direct to SoC, no other connections. Not present on WUP-DEV-X9. (impedance: high, measures: 3.3v)
Removed/Dev Testpoints
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.
- TP43 - present on CAT-HDD-X5, EXI_INT
- TP45 - present on CAT-HDD-X5, EXI_CS
- TP47 - present on CAT-HDD-X5, EXI_CLK
- TP48 - present on CAT-HDD-X5, EXI_DO
- TP50 - present on CAT-HDD-X5, EXI_DI
- TP53 - present on CAT-HDD-X5, no label
- TP55 - present on CAT-HDD-X5, no label
- TP57 - present on CAT-HDD-X5, no label
- TP58 - present on CAT-HDD-X5, V_IN
- TP62 - present on CAT-HDD-X5, V_5.0
- TP68 - present on CAT-HDD-X5, V_1.2
- TP72 - present on CAT-HDD-X5, V_2.5
- TP74 - present on CAT-HDD-X5, V_3.3
- TP1001 - present on CAT-HDD-X5, SEL_CS
- TP1002 - present on CAT-HDD-X5, SEL_WP
- TP1003 - present on CAT-HDD-X5, SDIO_D3
- TP1004 - present on CAT-HDD-X5, SDIO_D2
- TP1005 - present on CAT-HDD-X5, SDIO_D1
- TP1006 - present on CAT-HDD-X5, SDIO_D0
- TP1007 - present on CAT-HDD-X5, SDIOCMD
- TP1008 - present on CAT-HDD-X5, SDIOCLK
- TP1009 - present on CAT-HDD-X5, POWER_SW
- TP1010 - present on CAT-HDD-X5, FPOFF_SRQ
- TP1011 - present on CAT-HDD-X5, DCDC_OFF
- TP1012 - present on CAT-HDD-X5, VDD_RSTOUT
- TP1013 - present on CAT-HDD-X5, VDD1
- TP1014 - present on CAT-HDD-X5, VDD2