DSi XL testpoints

UTL-CPU-01 testpoints

number	name (TWL testpoint)	voltage standard	comment
TP1	EXTB+	?
TP2	VIN	~5V DC	External charger power input
TP3	Rosc	?	?
TP4	RICHG?	?	Recharge?
TP5	GND	(GND)	ground (near external charger connector)
TP6	V12	1.2V power rail	CPU-TWL core voltage
TP7	BT+	battery +	at 2-pin power connector to UTL-SUB-01
TP8	VDET-	?	?
TP9	DET	?	?
TP10	V18	1.8V power rail	Various I/O and core voltage (incl. RTC)
TP11	?	?	something charging?
TP12	VDD10?	10V power rail	For LCDs
TP13	V33	3.3V power rail	Various I/O and core voltage
TP14	GND	(GND)	ground (near PMIC)
TP15	B+	?	battery + ?
TP16	VDD-5?	-5V power rail	For LCDs
TP17	PVDD	?	?
TP18	VDD5?	5V power rail	For LCDs
TP19	?	?	(to R7 or R104)
TP20	BLA1?	?	backlight anode for lower screen
TP21	?	?	(to D6)
TP22	Y-?	?	touchscreen
TP23	BLA2?	?	backlight anode for upper screen
(TP24, TP25 don't exist)
TP26	BLC2	?	backlight cathode for upper screen
(TP27 doesn't exist)
TP28	?	?	? (found no connections. TODO!)
TP29	?	?	? (found no connections. TODO!)
TP30	SPRP	analog	positive signal for right built-in speaker
TP31	SPRN	analog	negative signal for right built-in speaker
TP32	SPLP	analog	positive signal for left built-in speaker
TP33	SPLN	analog	negative signal for left built-in speaker
TP34	GND	(GND)	probably analog ground
TP35	SR	analog	headphone tip
TP36	SL	analog	headphone ring
(TP37, TP38 don't exist)
TP39	ORANGE	3V3? 4V2? (at anode)	Orange LED charging indicator
TP40	BLUE	3V3? 4V2? (at anode)	Blue LED power good indicator
TP41	RED	open collector (connected to LED cathode)	Red LED battery low indicator
TP42	MC1_D7	3V3	MSB of gamecard parallell ROM *or* AUXSPI COPI signal
TP43	MC1_D6	3V3	6th bit of gamecard parallell ROM *or* AUXSPI CIPO signal
TP44	MC1_VCC	3.3V power	power supply to gamecard (can be switched off by SoC)
(TP45 doesn't exist)
TP46	MC1_D5	3V3
TP47	MC1_D4	3V3
TP48	MC1_D3	3V3
TP49	MC1_DET	3V3	Cartridge detected in slot (active-low)
TP50	MC1_D2	3V3
TP51	MC1_IREQ	3V3	gamecart->SoC IRQ
TP52	MC1_D1	3V3
TP53	MC1_RES	3V3	SoC->gamecart reset signal
TP54	MC1_D0	3V3
TP55	MC1_CS	3V3	parallell ROM select (active-low)
TP56	MC1_CLK	3V3
TP57	MC1_CS2	3V3	AUXSPI select (active-low)
TP58	mRST	3V3	BP-UTL reset (active-low)
TP59	mFE	3V3	BP-UTL flash enable (cf. 78K0/Kx2 Serial Flash Programming protocol, see NEC/Renesas docs)
TP60	VOLP	3V3	volume + button (also RxD6 for 78K0 SFP)
TP61	VOLN	3V3	volume - button (also TxD6 for 78K0 SFP)
TP62	ATH_TX_H	3V3	something new (Atheros) wifi?
TP63	WL_TXPE	3V3	?
(TP64 doesn't exist)
TP65	WL_RXPE	3V3	?
TP66	/WIFI_RST	3V3	WiFi chip(s) reset (active-lw)
(TP67, TP68 don't exist)
TP69	SPI_MOSI	3V3	SPI bus
(TP70 doesn't exist)
TP71	SPI_MISO	3V3	SPI bus
(TP72 doesn't exist)
TP73	SPI_SCK	3V3	SPI bus
(TP74, TP75 don't exist)
TP76	SPI_CS1	3V3	SPI chip select 1 (PMIC)
(TP77 doesn't exist)
TP78	SPI_CS3	3V3	SPI chip select 3 (TSC)
TP79	SPI_CS2	3V3	SPI chip select 2 (NVRAM)
TP80	SCL	1V8	TWL bus
(TP81 doesn't exist)
TP82	SDA	1V8	TWL bus
TP83	PENIRQ	1V8? 3V3?	touchscreen pen down
TP84	R7	1V8?	hinge magnet detect signal (active-low)
TP85	RESET	3V3, but use as open drain/collector	CPU-TWL reset signal
TP86	P05	3V3?	dpad left button
TP87	P04	3V3?	dpad right button
TP88	P03	3V3?	start button
TP89	P02	3V3?	select button
TP90	P01	3V3?	B button
TP91	P00	3V3?	A button
TP92	PM_SLP	?	?
TP93	VCNT5	?	?
TP94	maybe GPIO330?	3V3?	?
TP95	R01	?	Y button
TP96	R00	?	X button
TP97	P09	3V3	shoulder-L button
TP98	P08	3V3	shoulder-R button
TP99	MUTE	3V3	? (aka GPIO333?)
TP100	P07	3V3?	dpad down button
TP101	HP#SP	3V3	audio out is headphones (1) or speakers (0). aka GPIO331
TP102	P06	3V3?	dpad up button
(TP103 doesn't exist)
TP104	? (maybe nIRQ_O)	3V3?	(nIRQ_O is the "powerbutton pressed" signal from the BPTWL to the CPU-TWL SoC. aka GPIO332)
TP105	LDR20		top LCD R.bit0
TP106	LDR21		top LCD R.bit1
TP107	LDR22		top LCD R.bit2
TP108	LDR23		top LCD R.bit3
TP109	LDR24		top LCD R.bit4
TP110	LDB21		top LCD B.bit1
TP111	LDG21		top LCD G.bit1
TP112	LDG22		top LCD G.bit2
TP113	LDG25		top LCD G.bit5
TP114	LDB20		top LCD B.bit0
TP115	LDB23		top LCD B.bit3
TP116	LDR11		bottom LCD R.bit1
TP117	LDR14		bottom LCD R.bit4
TP118	LDR15		bottom LCD R.bit5
TP119	LDR25		bottom LCD R.bit5
<work in progress>
TP172	SD10_CLK	3V3	SD card
TP173	SD10_D0	3V3	SD card
TP174	SD10_D1	3V3	SD card
TP175	SD10_D2	3V3	SD card
TP176	SD10_D3	3V3	SD card
TP177	SD10_CMD	3V3	SD card

[more TODO]

UTL-SUB-01 testpoints

number	name (TWL testpoint)	voltage standard	comment
TP1	?	?	to TH1 component
TP2	GND	(GND)	ground
TP3	P06	3V3?	D-pad up
TP4	P04	3V3?	D-pad right
TP5	P05	3V3?	D-pad left
TP6	P07	3V3?	D-pad down
TP7	PWSW	?	raw powerbutton input (to PMIC and BPTWL)
TP8	RED	open collector (at cathode)	Battery low LED (DL1)
TP9	YELLOW	open collector (at cathode)	WiFi indicator LED (DL4)
TP10	BLUE	3V3? 4V2? (at anode)	Power on/good LED (DL2)
TP11	ORANGE	3V3? 4V2? (at anode)	Charging indicator (DL3)
TP12	VDD42	4.2V power supply	Power supply for TP8/TP10 LEDs

P24 pinout

P24 is a mezzanine connector for the VOLP/VOLN buttons and the shoulder L button (which were on P16 on the DSi). The P16 pinout has changed too, documentation for that is TODO.

name	pin no	pin no	name
GND	1	2	GND
N/C	3	4	VOLP
P09 (shoulder-L)	5	6	VOLN
GND	7-13	8-14	GND