PRELIMINARY
CYW54907
10.4 Alternate GPIO Signal Functions
Table 12 provides the alternate signal functions of the GPIO signals.
Table 12. Alternate GPIO Signal Functions
GPIO
GPIO_0
Default
USB20H_CTL
JTAG_SEL
Default Pull
HOLD/PDLOW/PDHIGH
Strap
Comments
–
–
No pull
Down
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
–
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
8 mA
GPIO_1
GPIO_2
GPIO_3
GPIO_4
GPIO_5
GPIO_6
GPIO_7
GPIO_8
GPIO_9
GPIO_10
GPIO_11
GPIO_12
GPIO_13
GPIO_14
GPIO_15
GPIO_16
–
GSPI_MODE
GCI_GPIO(0)
GCI_GPIO(1)
GCI_GPIO(2)
GCI_GPIO(3)
GCI_GPIO(4)
–
JTAG_TCK
No pull
No pull
No pull
No pull
No pull
Down
–
JTAG_TMS
–
JTAG_TDI
–
JTAG_TDO
–
JTAG_TRST
–
–
–
–
–
–
–
–
–
–
–
WCPU_BOOT_MODE
GPIO_8
GPIO_9
GPIO_10
–
No pull
Down
–
–
No pull
Down
–
ACPU_BOOT_MODE
GPIO_12
–
No pull
Down
–
SDIO_MODE
GPIO_14
–
No pull
Down
–
VTRIM_EN
–
–
No pull
Document Number: 002-19312 Rev. *C
Page 44 of 95
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