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3. TECHNICAL BRIEF
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3.8.14. General-Purpose Input/Output Interface
The MSM62450 device has general-purpose bidirectional input/output pins. Some of the GPIO pins
have alternate functions supported on them. The alternate functions include USB interface, additional
RAM, ROM, general-purpose chip selects, parallel LCD interface, and a UART interface. The function
of these pins is documented in the various software releases.
3.8.15. UART
The MSM6245 device employs three UARTs. UART1 has dedicated pins while UART2 and UART3
share multiplexed pins.
3.8.16. USB
The MSM6245 device integrates a universal serial bus (USB) controller that supports both
unidirectional and bidirectional transceiver interfaces. The USB controller acts as a USB peripheral
communicating with the USB host. MSM6245 supports the 3-wire functionality.