CONFIG11 Registers

Registers

NAME	PHYSICAL ADDRESS	WIDTH	INFO
SPI_CFG	0x101401C0	4
SHAREDWRAM_CFG	0x10141000	16
?	0x10141100	1
?	0x10141103	1
?	0x10141104	1
?	0x10141105	1
?	0x10141108	1
PDN_WIFI?	0x1014110C	1
?	0x10141140	1
?	0x10141141	1
PDN_WIFI	0x10141180	1	1=Internet?, 0=Streetpass?
PDN_HID	0x101411C0	1
?	0x10141200	4
?	0x10141FFC	4
?	0x10141008	4
?	0x1014100C	4
PDN_TWLMODE?	0x10141100	2
?	0x10141104	2
?	0x10141110	2
?	0x10141112	2
?	0x10141114	2
?	0x10141116	2
PDN_LCD	0x10141200	1	Boot11 sets/clears bit16, bit0.
PDN_BACKLIGHT	0x10141202	1
?	0x10141204	1	Boot11 sets/clears bit0.
?	0x10141210	1
PDN_CODEC	0x10141220	1
PDN_CAMERA	0x10141224	1
?	0x10141230	1

0x1EC41008 and 0x1EC4100C

These are the PDN PTM registers used for the PDN PTM service.

PDN_TWLMODE

The very last 3DS-mode register poke the TWL_FIRM Process9 does before it gets switched into TWL-mode, is writing 0x8000 to this register. Before writing this register, TWL Process9 waits for the value of this register to become non-zero. The Process9 code for this runs from ITCM, since switching into TWL-mode includes remapping all ARM9 physical memory.

Writing 0x8000 to here from the ARM9 with NATIVE_FIRM running doesn't seem to do anything, other reg-pokes likely need done first.

PDN_LCD

This one seems to control the LCD displays?

PDN_BACKLIGHT

This is the power register used for the LCD backlights.

bit0 = turn on/off LCD backlight, rest = always 0.

PDN_CODEC

This is the power register used for the PDN CODEC service.

bit0 = unknown, bit1 = turn on/off DSP, rest = always 0.

PDN_CAMERA

This is the power register used for the PDN camera service.

bit0 = unknown, bit1 = turn on/off cameras, rest = always 0.