ISD91200 Series Technical Reference Manual
Release Date: Sep 16, 2019
- 43 -
Revision 2.4
[5:4]
PB2MFP
Alternate Function Setting for PB2MFP
00 = GPIO.
01 = SPI1_SSB.
[3:2]
PB1MFP
Alternate Function Setting for PB1MFP
00 = GPIO.
01 = SPI1_SCLK.
[1:0]
PB0MFP
Alternate Function Setting for PB0MFP
00 = GPIO.
01 = SPI1_MOSI.
Table 5-9 GPIOA Alternate Function Register (GPA_ALT address 0x5000_0038)
GPIO
Power
Domain
GPAn=01
GPAn =10
GPAn =11
Function
Type
Function
Type
Function
Type
GPIOA0
VDD33
SPI0_HOLD0
(MISO1)
IO
I2S0_FS
IO
GPIOA1
VDD33
SPI0_MOSI0
O
I2S0_BCLK
IO
GPIOA2
VDD33
SPI0_SCLK0
O
DMIC_DAT
I
I2S0_SDI
I
GPIOA3
VDD33
SPI0_SSB0
IO
SARADC_TRIG I
I2S0_SDO
O
GPIOA4
VDD33
SPI0_MISO0
IO
UART0_TX
O
SPI1_MOSI
O
GPIOA5
VDD33
SPI0_WP0
(MOSI1)
IO
UART0_RX
I
SPI1_SCLK
O
GPIOA6
VDD33
UART0_TX
O
I2C0_SDA
IO
SPI1_SSB
IO
GPIOA7
VDD33
UART0_RX
I
I2C0_SCL
IO
SPI1_MISO
I
GPIOA8
VCCD
I2C0_SDA
IO
UART1_TX
O
UART0_RTSn
O
GPIOA9
VCCD
I2C0_SCL
IO
UART1_RX
I
UART0_CTSn
I
GPIOA10
VCCD
PWM0CH0
O
TM0
I
DPWM_P
O
GPIOA11
VCCD
PWM0CH1
O
TM1
I
DPWM_M
O
GPIOA12
VCCD
PWM0CH2
O
X12MI
I
I2C0_SDA
IO
GPIOA13
VCCD
PWM0CH3
O
X12MO
O
I2C0_SCL
IO
GPIOA14
VCCD
UART1_TX
O
DMIC_CLK
IO
X32KI
I
GPIOA15
VCCD
UART1_RX
IO
MCLK
O
X32KO
O
Table 5-10 GPIOB Alternate Function Register (SYS_GPB_MFP address 0x5000_003C)
GPIO
Power
Domain
GPBn=01
GPBn =10
GPBn =11
Analog Functions
Function
Type Function Type
Function
Type