CYW20737
Table 9. GPIO Pin Descriptionsa (Cont.)
Default Di- After POR
Pin Number
Pin Name
P13
Power Domain
Alternate Functions
rection
State
29
Input
Input
floating
VDDO
■ GPIO: P13
■ PWM3
■ ADC_IN22 (A/D converter input)
■ GPIO: P28
P28
Input
Input
floating
VDDO
■ Q0C2 (quadrature output control)
■ ADC_IN11 (A/D converter input)
■ PWM2
■ LED1
■ IR_TX
■ Current: 16 mA
30
P14
P38
Input
Input
Input
floating
VDDO
VDDO
■ GPIO: P14
■ PWM2
■ ADC_IN21 (A/D converter input)
■ GPIO: P38
Input
floating
■ IR_TX
■ SPI_2: MOSI (master and slave)
■ ADC_IN1 (A/D converter input)
■ GPIO: P15
31
27
P15
P24
Input
Input
Input
floating
VDDO
VDDO
■ SWDIO
■ IR_RX/60 Hz_main
■ ADC_IN20 (A/D converter input)
■ GPIO: P24
Input
floating
■ PUART_TX (peripheral UART)
■ SPI_2: SPI_CLK (master and slave)
■ SPI_1: MISO (master)
■ GPIO: P25
26
25
P25
P32
Input
Input
Input
floating
VDDO
VDDO
■ SPI_2: MISO (master and slave)
■ PUART_RX (peripheral UART)
■ GPIO: P32
Input
floating
■ ACLK0 (auxiliary clock output)
■ PUART_TX (peripheral UART)
■ SPI_2: SPI_CS (slave)
■ ADC_IN7 (A/D converter input)
■ SPI_1: MISO (master)
a. During power-on reset, all inputs are disabled.
Document Number: 002-16365 Rev. *C
Page 20 of 36
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