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Himalaya GPIO
pin
bitmask
Description
Input/Output
IRQ+W
ALT
Sleep
Init
GPIO 0
00000001
power button (depress=0, release=1)
I
REFE+
1
GPIO 1
00000002
reset
I
(REFE)+
1
1
GPIO 2
00000004
backpack irq (nk.exe)
I
RE
1
GPIO 3
00000008
USB cradle dock = 0, undock = 1
I
REFE+
1
GPIO 4
00000010
GSM reset related (extbootldr), Serial wakeup nk.exe
I
REFE(RE+)
GPIO 5
00000020
TS irq
I
FE
1
GPIO 6
00000040
?
O
1
GPIO 7
00000080
buttons IRQ
I
FE+
1
GPIO 8
00000100
ASIC3 GPIO chain IRQ
I
RE+
GPIO 9
00000200
ATI / GSM reset related (extbootldr)
I
RE+
GPIO 10
00000400
REMOTE irq
I
RE
GPIO 11
00000800
ASIC3 SDIO IRQ
I
FE
1
GPIO 12
00001000
PASIC2 irq (nk.exe)
I
(REFE+)
GPIO 13
00002000
MBGNT
O
2
GPIO 14
00004000
MBREQ
I
1
GPIO 15
00008000
#CS1
O
2
1
GPIO 16
00010000
?
O
1
GPIO 17
00020000
?
I
1
GPIO 18
00040000
RDY
I
1
1
GPIO 19
00080000
?
O
1
GPIO 20
00100000
DREQ0
I
1
1
GPIO 21
00200000
IR enable(=0) related
O
GPIO 22
00400000
ATI reset
O
1
GPIO 23
00800000
?/SSP CLK audio out clock
O
0/2
1
GPIO 24
01000000
?/SSP FRM
O
0/2
GPIO 25
02000000
?/SSP TXD audio out data
O
0/2
GPIO 26
04000000
(SSP RXD unused)
O
GPIO 27
08000000
SSP external clock ?
I
1
GPIO 28
10000000
I2S BITCLK ?
O
1
GPIO 29
20000000
I2S SDATA_IN ?
I
2
GPIO 30
40000000
(I2S SDATA_OUT unused)
O
1
GPIO 31
80000000
I2S SYNC
O
1
GPIO 32
00000001
I2S SYSCLK
O
1
GPIO 33
00000002
#CS5
O
2
1
GPIO 34
00000004
FF UART RXD (GSM_data m$com9)
I
1
1
GPIO 35
00000008
FF UART CTS (GSM_data port m$com9)
I
1
GPIO 36
00000010
FF UART DCD (GSM_data m$com9) Select GSM boot type
I
1
GPIO 37
00000020
?
O
GPIO 38
00000040
?
I
GPIO 39
00000080
FF UART TXD (GSM_data m$com9)
O
2
GPIO 40
00000100
FF UART DTR (GSM_data m$com9)
O
2
GPIO 41
00000200
FF UART RTS (GSM_data m$com9)
O
2
1
GPIO 42
00000400
BT UART RXD (serial m$com1)
I
1
GPIO 43
00000800
BT UART TXD (serial m$com1)
O
2
GPIO 44
00001000
BT UART CTS (serial m$com1)
I
1
1
GPIO 45
00002000
BT UART RTS (serial m$com1)
O
2
1
GPIO 46
00004000
ST UART RXD (GSM_cmd m$com2)
I
2
1
GPIO 47
00008000
ST UART TXD (GSM_cmd m$com2)
O
1
GPIO 48
00010000
#OE (
?
CardService
)
O
2
1
GPIO 49
00020000
#WE (
?
CardService
)
O
2
1
GPIO 50
00040000
#PIOR (
?
CardService
)
O
2
1
GPIO 51
00080000
#PIOW (
?
CardService
)
O
2
1
GPIO 52
00100000
#CE1 (
?
CardService
)
O
2
1
GPIO 53
00200000
#CE2 (
?
CardService
)
O
2
1
GPIO 54
00400000
#PKTSEL (
?
CardService
)
O
2
GPIO 55
00800000
#PREG (
?
CardService
)
O
2
1
GPIO 56
01000000
#PWAIT (
?
CardService
)
I
1
1
GPIO 57
02000000
#IO16 (
?
CardService
)
I
1
1
GPIO 58
04000000
?
O
GPIO 59
08000000
?
O
GPIO 60
10000000
USB Power, 0 = on, 1 = off
O
1
GPIO 61
20000000
?
O
GPIO 62
40000000
?
O
1
GPIO 63
80000000
Battery charging. Reacts on dock. 1 = dock, 0 = undock
O
GPIO 64
00000001
?
I
GPIO 65
00000002
camera close to 0
O
GPIO 66
00000004
?
O
GPIO 67
00000008
?
O
GPIO 68
00000010
?
O
GPIO 69
00000020
sound related
O
GPIO 70
00000040
?
O
GPIO 71
00000080
?
O
GPIO 72
00000100
?
O
GPIO 73
00000200
?
O
GPIO 74
00000400
reacts to sd, but also bluetooth
O
GPIO 75
00000800
?
O
GPIO 76
00001000
observed, GSM DCD related
I
GPIO 77
00002000
?
O
1
GPIO 78
00004000
#CS2
O
2
1
GPIO 79
00008000
#CS3
O
2
1
GPIO 80
00010000
#CS4
O
2
1
GPIO 81
00020000
NSSP CLK
O
1
1
GPIO 82
00040000
NSSP SFRM
O
1
1
GPIO 83
00080000
NSSP TXD
O
1
1
GPIO 84
00100000
NSSP RXD (TSC2200)
I
2
1
GPIO 85
00200000
?
I
1
GPIO 86
00400000
SDRAM chip select 2
O
1
GPIO 87
00800000
SDRAM chip select 3
O
1
GPIO 88
01000000
Read/Write
O
1
GPIO 89
02000000
?
I
1