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	ground	(near external charger connector)
TP6	VDD12 (aka 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	VDD18 (aka V18)	1.8V power rail	Various I/O and core voltage (incl. RTC)
TP11	?	?	something charging?
TP12	VDD10	10V power rail	For LCDs
TP13	VDD33 (aka V33)	3.3V power rail	Various I/O and core voltage
TP14	GND	ground	(near PMIC)
TP15	B+	?	battery + ?
TP16	VDD-5	-5V power rail	For LCDs
TP17	PVDD	?	?
TP18	VDD5	5.0V power rail	For LCDs
TP19	SG?	?	?
TP20	BLA1	?	backlight anode for lower screen
TP21	VDD42?	4.2V? power rail (it's certainly a power rail)	generated from VDD5 using diode voltage drops? (to D6, C22, D3)
TP22	BLC1	?	backlight cathode for lower screen
TP23	BLA2	?	backlight anode for upper screen
(TP24, TP25 don't exist)
TP26	BLC2	?	backlight cathode for upper screen
(TP27 doesn't exist)
TP28	MIC-	ground	same net as (analog) ground
TP29	MIC+	analog	Analog microphone-in signal
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	ground	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	BPTWL reset (active-low)
TP59	mFE	3V3	BPTWL flash enable (cf. 78K0/Kx2 Serial Flash Programming protocol, see NEC/Renesas docs)
TP60	VOLP	3V3	volume + button (also RxD6 for 78K0 SFP. There's a series resistor to the physical button as protection against shorts)
TP61	VOLN	3V3	volume - button (also TxD6 for 78K0 SFP. There's a series resistor to the physical button as protection against shorts)
TP62	ATH_TX_H	3V3	AR6002 ANTD, "Control signal for shared antenna switch", probably enables Ath TX antenna
TP63	WL_TXPE	3V3	Old Wifi TX enable?
(TP64 doesn't exist)
TP65	WL_RXPE	3V3	Old Wifi RX enable?
TP66	/WIFI_RST	3V3	New WiFi (Ath6k) reset (active-low)
(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	CPU-TWL bus
(TP81 doesn't exist)
TP82	SDA	1V8	CPU-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	GPIO330?	3V3	GPIO debug testpoint
TP95	R01	?	Y button
TP96	R00	?	X button
TP97	P09	3V3	shoulder-L button
TP98	P08	3V3	shoulder-R button
TP99	MUTE	3V3	? (controlled by GPIO333 through U17)
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	nIRQ_O?	3V3	"powerbutton pressed" signal from the BPTWL to the CPU-TWL. 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	LDR12		bottom LCD R.bit4
TP118	LDR15		bottom LCD R.bit5
TP119	LDR25		top LCD R.bit5
TP120	LDG20		top LCD G.bit2
TP121	LDG23		top LCD G.bit3
TP122	LDG24		top LCD G.bit4
TP123	LDB22		top LCD B.bit2
TP124	LDB24		top LCD B.bit4
TP125	LDB25		top LCD B.bit5
TP126	LDR10		bottom LCD R.bit0
TP127	LDR13		bottom LCD R.bit3
TP128	LDR14		bottom LCD R.bit4
TP129	LDG10		bottom LCD G.bit0
TP130	LDG11		bottom LCD G.bit1
TP131	LDG12		bottom LCD G.bit2
TP132	LDG13		bottom LCD G.bit3
TP133	LDG15		bottom LCD G.bit5
TP134	LDB11		bottom LCD B.bit1
TP135	LDG14		bottom LCD G.bit4
TP136	LDB10		bottom LCD B.bit0
TP137	COM2	?	?
TP138	LDB12		bottom LCD B.bit2
TP139	LDB13		bottom LCD B.bit3
TP140	LDB14		bottom LCD B.bit4
TP141	LDB15		bottom LCD B.bit5
TP142	INI	?	LCD controller ?
TP143	GSP		LCD controller Vsync?
TP144	GCK	?	LCD controller ?
TP145	REV		LCD controller ?
TP146	LS		LCD controller Hsync?
TP147	SPL		LCD controller ?
TP148	DCLK		LCD controller dot clock
TP149	CAM_RST	1V8?	Camera reset signal
TP150	COM1	?	?
(TP151 doesn't exist)
TP152	CAM_D4	1V8?	Camera parallell port (conn. thru RA7, 270Ω)
TP153	HSYNC	1V8?	Camera horizontal sync/blank (conn. thru R133, 0Ω) (Aptina MT9V133-D LINE_VALID, active-low)
TP154	CAM_D3	1V8?	Camera parallell port (conn. thru RA6, 270Ω)
TP155	VSYNC	1V8?	Camera vertical sync/blank (conn. thru R132, 0Ω) (Aptina MT9V133-D FRAME_VALID, active-low)
TP156	CKI	1V8?	Camera clock something? (Aptina MT9V133-D EXTCLK? PIXCLK?)
TP157	CAM_D2	1V8?	Camera parallell port (conn. thru RA6, 270Ω)
TP158	CAM_D7	1V8?	Camera parallell port (conn. thru RA7, 270Ω)
TP159	CAM_D1	1V8?	Camera parallell port (conn. thru RA6, 270Ω)
TP160	X+	?	touchscreen
TP161	Y+	?	touchscreen
TP162	X-	?	touchscreen, same net as Y-
TP163	Y-	?	touchscreen, same net as X-
TP164	CAM_D6	1V8?	Camera parallell port (conn. thru RA7, 270Ω)
TP165	CAM_D0	1V8?	Camera parallell port (conn. thru RA6, 270Ω)
TP166	RCLK	1V8?	Camera (conn. thru R100, 100Ω) (Aptina MT9V133-D EXTCLK? PIXCLK?)
TP167	CAM_D5	1V8?	Camera parallell port (conn. thru RA7, 270Ω)
TP168	VDD28	2.8V power rail	Only used by the camera. Generated by an LDO (U12) from VDD33 (Aptina MT9V133-D analog power rail?)
(TP169 doesn't exist)
TP170	CAM_LED	Camera LED cathode?	Connected through Q13 and R68 to BPTWL.
TP171	RTC_INT	1V8?	RTC->CPU-TWL interrupt
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
TP178	SD10_CP	3V3	SD card (card detect)
TP179	SD10_WP	3V3	SD card write protect
TP180	GND	ground
(TP181 doesn't exist)
TP182	SD10_VDD	3.3V power rail	same net as VDD33
TP183	AOUT		charging/battery status ?
TP184	ADPO		charging/battery status ?
TP185	SCL1	3V3	BPTWL bus
TP186	SDA1	3V3	BPTWL bus
TP187	SDI	1V8? 3V3?	I2S bus
TP188	SDO	1V8? 3V3?	I2S bus
TP189	WS	1V8? 3V3?	I2S bus
TP190	SCLK	1V8? 3V3?	I2S bus
TP191	MCLK	1V8? 3V3?	I2S bus
TP192	PWSWO	3V3?	powerbutton "output" from PMIC to BPTWL?
TP193	TH	?	something battery charger?
TP194	VSHD	5.0V power rail	Same net as VDD5. For LCDs.

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

P16 pinout

The P16 pinout changed from what it was on the regular DSi. Some nets are now found in P24 instead (see below).

name	pin no	pin no	name
GND	1	2	GND
GND	3	4	GND
GND	5	6	GND
SD10_CLK	7	8	GND
VDD33	9	10	SD10_D0
VDD33	11	12	SD10_D1
GND	13	14	SD10_WP
SD10_CMD	15	16	VDD33
GND	17	18	P08
SD10_D3	19	20	VDD33
SD10_D2	21	22	SD10_CD
GND	23	24	GND
GND	25	26	GND

P24 pinout

P24 is a mezzanine connector for the VOLP/VOLN buttons and the shoulder L button (which were on P16 on the DSi).

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