Difference between revisions of "TP Nets"

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(Created page with "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...")
 
 
(4 intermediate revisions by the same user not shown)
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== Old 3DS ==
 
== Old 3DS ==
  
−
The signals were figured out using a PicoScope 2206B running at 20 MS/s, ±5 V, 8-bit, 1:10, DC.
+
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"
 
{| class="wikitable"
−
! TP !! Net Name !! U[V] !! A/O/S (1) !! <nowiki> A/D/P/G|PP/OC|R/T </nowiki> (2) !! Domain !! f[Hz] !! Description
+
! 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 || || A || || Charger || - ||  
+
| TP1 || GND || 0V || S || G || Charger || - ||  
 
|-
 
|-
 
| TP2 || +1.2V || 1.2V || O || P || ? || - ||  
 
| 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
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP4 || Uchrg || 5V || A || P || Charger || - ||  
+
| TP41 || Bot Screen Lights Source || 10V || A || P || ? || - ||
 +
|-
 +
| TP42 || Bot Screen Lights Sink || 0.2V || A || P || ? || - ||  
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP7 || +1.8V || 1.8V || A || P || ? || - ||  
+
| TP46 || Enable? Supply? || 3.2V || A || PP?P? || ? || - || High when displays are active but low during boot
 
|-
 
|-
−
| TP8 || Ubat || 3.5V-3.8V || A || P || Charger || - ||  
+
| .. ||  ||  ||  ||  ||  ||  ||
 +
|-
 +
| 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
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP10 || +1.8V || 1.8V || A || P || ? || - ||  
+
| TP58 || WLAN button || 1.8V || O || OC || side buttons || - ||
 +
|-
 +
| .. || ||  ||  || || || ||  
 
|-
 
|-
−
| TP11 || +1.8V || 1.8V || A || P || ? || - ||  
+
| TP67 || SYS-LED-BLUE-LowsideDriver || 2.2V - 3V || O || P+T || leds || 0Hz, 2kHz || Static when active, PWM when in standby
 
|-
 
|-
−
| TP12 || +3.5V || 3.8V || O || P || ? || - ||  
+
| 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 || ? ||  
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP41 || AMP-REF-BOTSCR || 0.2V || S || P || ? || - ||  
+
| TP80 || START || 1.8V || O || OC || main buttons || - ||  
 
|-
 
|-
−
| TP42 || AMP-REF-BOTSCR? || 10V || S || P || ? || - ||  
+
| 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 || - ||  
 
|-
 
|-
−
| TP46 || Enable? Supply? || 3.2V || S || PP?P? || ? || - || High when displays are active but low during boot
+
| TP90 || DPAD-R || 1.8V || O || OC || main buttons || - ||  
 
|-
 
|-
−
| .. || || || || || || ||  
+
| TP91 || DPAD-D || 1.8V || O || OC || main buttons || - ||  
 
|-
 
|-
−
| TP80 || START || 1.8V || O || OC || ? || - ||  
+
| TP92 || B || 1.8V || O || OC || main buttons || - ||  
 
|-
 
|-
−
| TP81 || SELECT || 1.8V || O || OC || ? || - ||  
+
| TP93 || ? || 0V || S || G? D? A? || ? || - ||  
 
|-
 
|-
−
| TP82? || HOME? || 1.8V? || O? || OC? || ? || - ||  
+
| TP94 || ? || 0V || S || G? D? A? || ? || - ||  
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP85 || DPAD-U || 1.8V || O || OC || ? || - ||  
+
| TP96 || +3.2V || 3.2V || O || P? || ? || - ||  
 
|-
 
|-
−
| TP86 || X || 1.8V || O || OC || ? || - ||  
+
| .. || || || || || || ||  
 
|-
 
|-
−
| TP87 || DPAD-L || 1.8V || O || OC || ? || - ||  
+
| TP131 || TOP-SCREEN-PWM || 1.8V || A || D || ? || 1166.7kHz || 2.7% (darkest) - 25% (brightest) dutycycle
 
|-
 
|-
−
| TP88 || Y || 1.8V || O || OC || ? || - ||  
+
| TP132 || BOT-SCREEN-PWM || 1.8V || A || D || ? || 1166.7kHz || 5% (darkest) - 54% (brightest) dutycycle
 
|-
 
|-
−
| TP89 || A || 1.8V || O || OC || ? || - ||  
+
| .. || || || || || || ||  
 
|-
 
|-
−
| TP90 || DPAD-R || 1.8V || O || OC || ? || - ||  
+
| TP144 || IR-I2C-SCL || 3.2Vp || R || OC || ir-i2c || 390kHz || Address: 9Ah (W), 9Bh (R)
 
|-
 
|-
−
| TP91 || DPAD-D || 1.8V || O || OC || ? || - ||  
+
| .. || || || || || || ||  
 
|-
 
|-
−
| TP92 || B || 1.8V || O || OC || ? || - ||  
+
| TP146 || IR-I2C-SDA || 3.2Vp || R || OC || ir-i2c || 390kHz ||  
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP131 || (TOP-?)SCREEN-PWM || 1.8V || S || D || ? || 1166.7kHz ||  
+
| TP149 || ? || 2Vp || A || C?+R || ? || 47.6kHz || I2S word select?
 +
|-
 +
| TP150 || ? || 2Vp || A || C?+R || ? || 1.52MHz || I2S clock?
 +
|-
 +
| .. ||  || ||  ||  ||  || ||  
 
|-
 
|-
−
| TP132 || (BOT-?)SCREEN-PWM || 1.8V || S || D || ? || 1166.7kHz ||  
+
| TP152 || ? || 1.8Vp || A || D || ? || 16.7MHz || clock?
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP189 || VIDEO-CLK || 1.8Vp || S || D+T || ? || 11.1MHz ||  
+
| TP189 || VIDEO-CLK || 1.8Vp || A || D+T || video signal || 11.1MHz || at home screen
 
|-
 
|-
−
| Tp190 || VIDEO-HSYNC || 1.8Vp || S || D+R || ? || - ||  
+
| TP190 || VIDEO-HSYNC || 1.8Vp || A || D+R || video signal || 24.77kHz || at home screen
 
|-
 
|-
−
| TP191 || VIDEO-VSYNC || 1.8Vp || S || D+R || ? || - ||  
+
| TP191 || VIDEO-VSYNC || 1.8Vp || A || D+R || video signal || 59.8Hz ~60 || at home screen
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP213 || TOUCH-R-X? || 0V-2Vp || O || A+R || ? ||  ||  
+
| TP213 || TOUCH-Y? || 2V, 2Vp || O || D, D+R || touch ||  ||  
 
|-
 
|-
−
| TP214 || TOUCH-T-Y? || 2Vp || O || P || ? ||  ||  
+
| TP214 || TOUCH-X? || 0V, 2Vp || O || A, A+R || touch ||  ||  
 
|-
 
|-
−
| TP215 || TOUCH-R-Y? || 2Vp || O || P || ? ||  ||  
+
| TP215 || TOUCH-Y? || 2V, 2Vp || O || D, D+R || touch ||  ||  
 
|-
 
|-
−
| TP216 || TOUCH-T-X? || 0V-2Vp || O || A+R || ? ||  ||  
+
| TP216 || TOUCH-X? || 0V, 2Vp || O || A, A+R || touch ||  ||  
 
|-
 
|-
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
| .. ||  ||  ||  ||  ||  ||  ||  
 
|-
 
|-
−
| TP249 || NAND-DAT0 ||  || || || ||  ||  
+
| TP249 || NAND-DAT0 ||  || O? || PP? || nand ||  ||  
 
|-
 
|-
−
| TP250 || NAND-DAT1 ||  || || || ||  ||  
+
| TP250 || NAND-DAT1 ||  || O? || PP? || nand ||  ||  
 
|-
 
|-
−
| TP251 || NAND-DAT2 ||  || || || ||  ||  
+
| TP251 || NAND-DAT2 ||  || O? || PP? || nand ||  ||  
 
|-
 
|-
−
| TP252 || NAND-DAT3 ||  || || || ||  ||  
+
| TP252 || NAND-DAT3 ||  || O? || PP? || nand ||  ||  
 
|-
 
|-
−
| TP253 || NAND-CMD ||  || || || ||  ||  
+
| TP253 || NAND-CMD ||  || O? || PP? || nand ||  ||  
 
|-
 
|-
−
| TP254? || NAND-CLK? ||  || || || ||  ||  
+
| TP254? || NAND-CLK? ||  || O? || PP? || nand ||  ||  
 
|}
 
|}
−
[1] Presence: A = Always; O = Device On; S = Not during standby.
+
[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; Typical Waveforms: R = Rectangular; T = Triangular;
+
[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;

Latest revision as of 20:07, 16 May 2020

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

Old 3DS[edit]

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.

TP Net Name U[V] S/O/A/R (1) A/D/P/G|C/OC|R/T (2) 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;

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