Owners manual
Pin Description
H3 Datasheet(Revision1.2) Copyright© 2015 Allwinner Technology Co.,Ltd.All Rights Reserved. Page 74
3.2. GPIO Multiplexing Functions
Table 3-2 provides a description of the H3 GPIO multiplexing functions.
Table 3-2. Multiplexing Functions
Pin
Name
Default
Function
IO
Type
Default
IO State
Default
Pull-up/
down
Function 2
Function3
Function 4
Function 5
Function 6
PA0
GPIO
I/O
DIS
Z
UART2_TX
JTAG_MS
-
-
PA_EINT0
PA1
I/O
DIS
Z
UART2_RX
JTAG_CK
-
-
PA_EINT1
PA2
I/O
DIS
Z
UART2_RTS
JTAG_DO
-
-
PA_EINT2
PA3
I/O
DIS
Z
UART2_CTS
JTAG_DI
-
-
PA_EINT3
PA4
I/O
DIS
Z
UART0_TX
-
-
-
PA_EINT4
PA5
I/O
DIS
Z
UART0_RX
PWM0
-
-
PA_EINT5
PA6
I/O
DIS
Z
SIM_PWREN
-
-
-
PA_EINT6
PA7
I/O
DIS
Z
SIM_CLK
-
-
-
PA_EINT7
PA8
I/O
DIS
Z
SIM_DATA
-
-
-
PA_EINT8
PA9
I/O
DIS
Z
SIM_RST
-
-
-
PA_EINT9
PA10
I/O
DIS
Z
SIM_DET
-
-
-
PA_EINT10
PA11
I/O
DIS
Z
TWI0_SCK
DI_TX
-
-
PA_EINT11
PA12
I/O
DIS
Z
TWI0_SDA
DI_RX
-
-
PA_EINT12
PA13
I/O
DIS
Z
SPI1_CS
UART3_TX
-
-
PA_EINT13
PA14
I/O
DIS
Z
SPI1_CLK
UART3_RX
-
-
PA_EINT14
PA15
I/O
DIS
Z
SPI1_MOSI
UART3_RTS
-
-
PA_EINT15
PA16
I/O
DIS
Z
SPI1_MISO
UART3_CTS
-
-
PA_EINT16
PA17
I/O
DIS
Z
OWA_OUT
-
-
-
PA_EINT17
PA18
I/O
DIS
Z
PCM0_SYNC
TWI1_SCK
-
-
PA_EINT18
PA19
I/O
DIS
Z
PCM0_CLK
TWI1_SDA
-
-
PA_EINT19
PA20
I/O
DIS
Z
PCM0_DOUT
SIM_VPPEN
-
-
PA_EINT20
PA21
I/O
DIS
Z
PCM0_DIN
SIM_VPPPP
-
-
PA_EINT21
PC0
GPIO
I/O
DIS
Z
NAND_WE
SPI0_MOSI
-
-
-
PC1
I/O
DIS
Z
NAND_ALE
SPI0_MISO
-
-
-
PC2
I/O
DIS
Z
NAND_CLE
SPI0_CLK
-
-
-
PC3
I/O
DIS
Pull-up
NAND_CE1
SPI0_CS
-
-
-
PC4
I/O
DIS
Pull-up
NAND_CE0
-
-
-
-
PC5
I/O
DIS
Z
NAND_RE
SDC2_CLK
-
-
-
PC6
I/O
DIS
Pull-up
NAND_RB0
SDC2_CMD
-
-
-
PC7
I/O
DIS
Pull-up
NAND_RB1
-
-
-
-
PC8
I/O
DIS
Z
NAND_DQ0
SDC2_D0
-
-
-
PC9
I/O
DIS
Z
NAND_DQ1
SDC2_D1
-
-
-
PC10
I/O
DIS
Z
NAND_DQ2
SDC2_D2
-
-
-
PC11
I/O
DIS
Z
NAND_DQ3
SDC2_D3
-
-
-
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