View source for TP Nets

This page lists and describes the purposes of the testpoints accessible on a 3DS's circuit board.

== Old 3DS ==

The signals were figured out using a PicoScope 2206B running at least at 2 MS/s, ±5 V, 8-bit, 1:10, DC. All measures of digital signals were referenced by the square GND pad at the bottom left corner.

{| class="wikitable"
! TP !! Net Name !! U[V] !! S/O/A/R (1) !! <nowiki> A/D/P/G|C/OC|R/T (2) </nowiki> !! Domain !! f[Hz] !! Description
|-
| TP1 || GND || 0V || S || G || Charger || - || 
|-
| TP2 || +1.2V || 1.2V || O || P || ? || - || 
|-
| TP3 || +2.8V || 2.8V || O || P || ? || - || 
|-
| TP4 || Uchrg || 3V - 5V || S || P || Charger Port || - || 
|-
| TP5 || +1.8V || 1.8V || O || P || ? || - || 
|-
| TP6 || +2.8V || 2.8V || O || P || ? || - || 
|-
| TP7 || +1.8V || 1.8V || S || P || ? || - || 
|-
| TP8 || Ubat || 3.5V - 3.8V || S || P || Battery || - || 
|-
| TP9 || +3.9V || 3.6V - 3.9V || S || P || ? || - || 3.9V when off, around 3.6V when active
|-
| TP10 || +1.8V || 1.8V || S || P || ? || - || 
|-
| TP11 || +1.8V || 1.8V || S || P || ? || - || 
|-
| TP12 || +4V || 3.7V - 4V || O || P || ? || - || 4V during standby, around 3.75V when active
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP41 || Bot Screen Lights Source || 10V || A || P || ? || - || 
|-
| TP42 || Bot Screen Lights Sink || 0.2V || A || P || ? || - || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP46 || Enable? Supply? || 3.2V || A || PP?P? || ? || - || High when displays are active but low during boot
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP48 || HEADPHONE-GND || 2.2Vpp || O? || G || headphone || ~ 33kHz || Headphone ground
|-
| TP49 || HEADPHONE-PD || 1V || O || OC || headphone || - || headphone Plug Detection
|-
| TP50 || HEADPHONE-LEFT || 2.2Vpp || A || A+PP || headphone ||  || referenced to TP48, AC
|-
| TP51 || HEADPHONE-RIGHT || 2.2Vpp || A || A+PP || headphone ||  || referenced to TP48, AC
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP58 || WLAN button || 1.8V || O || OC || side buttons || - || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP67 || SYS-LED-BLUE-LowsideDriver || 2.2V - 3V || O || P+T || leds || 0Hz, 2kHz || Static when active, PWM when in standby
|-
| TP68 || JPAD-Y || 0.2V - 1.5V || A || A || circle pad || - || Voltage U > D
|-
| TP69 || JPAD-X || 0.2V - 1.5V || A || A || circle pad || - || Voltage L > R
|-
| TP70 || SYS-LED-RED-LowsideDriver || (2.2V - 3V)? || ? || P+T || leds || ? || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP80 || START || 1.8V || O || OC || main buttons || - || 
|-
| TP81 || SELECT || 1.8V || O || OC || main buttons || - || 
|-
| TP82 || R || 1.8V || O || OC || main buttons || - || 
|-
| TP83 || L || 1.8V || O || OC || main buttons || - || 
|-
| TP84 || +1.8V || 1.8V || O || P? || ? || - || perhaps voltage rail for buttons?
|-
| TP85 || DPAD-U || 1.8V || O || OC || main buttons || - || 
|-
| TP86 || X || 1.8V || O || OC || main buttons || - || 
|-
| TP87 || DPAD-L || 1.8V || O || OC || main buttons || - || 
|-
| TP88 || Y || 1.8V || O || OC || main buttons || - || 
|-
| TP89 || A || 1.8V || O || OC || main buttons || - || 
|-
| TP90 || DPAD-R || 1.8V || O || OC || main buttons || - || 
|-
| TP91 || DPAD-D || 1.8V || O || OC || main buttons || - || 
|-
| TP92 || B || 1.8V || O || OC || main buttons || - || 
|-
| TP93 || ? || 0V || S || G? D? A? || ? || - || 
|-
| TP94 || ? || 0V || S || G? D? A? || ? || - || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP96 || +3.2V || 3.2V || O || P? || ? || - || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP131 || TOP-SCREEN-PWM || 1.8V || A || D || ? || 1166.7kHz || 2.7% (darkest) - 25% (brightest) dutycycle
|-
| TP132 || BOT-SCREEN-PWM || 1.8V || A || D || ? || 1166.7kHz || 5% (darkest) - 54% (brightest) dutycycle
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP144 || IR-I2C-SCL || 3.2Vp || R || OC || ir-i2c || 390kHz || Address: 9Ah (W), 9Bh (R)
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP146 || IR-I2C-SDA || 3.2Vp || R || OC || ir-i2c || 390kHz || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP149 || ? || 2Vp || A || C?+R || ? || 47.6kHz || I2S word select?
|-
| TP150 || ? || 2Vp || A || C?+R || ? || 1.52MHz || I2S clock?
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP152 || ? || 1.8Vp || A || D || ? || 16.7MHz || clock?
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP189 || VIDEO-CLK || 1.8Vp || A || D+T || video signal || 11.1MHz || at home screen
|-
| TP190 || VIDEO-HSYNC || 1.8Vp || A || D+R || video signal || 24.77kHz || at home screen
|-
| TP191 || VIDEO-VSYNC || 1.8Vp || A || D+R || video signal || 59.8Hz ~60 || at home screen
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP213 || TOUCH-Y? || 2V, 2Vp || O || D, D+R || touch ||  || 
|-
| TP214 || TOUCH-X? || 0V, 2Vp || O || A, A+R || touch ||  || 
|-
| TP215 || TOUCH-Y? || 2V, 2Vp || O || D, D+R || touch ||  || 
|-
| TP216 || TOUCH-X? || 0V, 2Vp || O || A, A+R || touch ||  || 
|-
| .. ||  ||  ||  ||  ||  ||  || 
|-
| TP249 || NAND-DAT0 ||  || O? || PP? || nand ||  || 
|-
| TP250 || NAND-DAT1 ||  || O? || PP? || nand ||  || 
|-
| TP251 || NAND-DAT2 ||  || O? || PP? || nand ||  || 
|-
| TP252 || NAND-DAT3 ||  || O? || PP? || nand ||  || 
|-
| TP253 || NAND-CMD ||  || O? || PP? || nand ||  || 
|-
| TP254? || NAND-CLK? ||  || O? || PP? || nand ||  || 
|}
[1] Presence: S = Static (always present); O = device On; A = Active (not in standby); R = when Required.

[2] Electrical characteristics: Signal Type: A = Analogue; D = Digital; P = Power; G = Ground; Driver: PP = Push Pull; OC = Open Collector; PU/PD = Pull Up/Down Typical Waveforms: R = Rectangular; T = Triangular;