Uart Clock Scheme - Texas Instruments OMAP5912 Reference Manual

OMAP5912 Description
UARTs
UART Clocking Scheme
Figure 11.

UART Clock Scheme

Configuration
MPU TIPB
registers
38 Introduction
There are three identical UART modules in OMAP5912:
-
UART1
-
UART2
-
UART3
UART1 and UART3 also support the IrDA mode if the proper set of module
inputs/outputs is configured.
Figure 11 describes the clocking scheme used to enable the UARTs to
generate their requested baud rate.
System clock/
48-MHz request
The clock sources for UART1/UART3 can be the APLL output.
The clock source for UART2 can be:
-
The system clock or the sleep clock
-
The APLL output
Selection of the clock source is done statically from the OMAP5912
configuration register, which is accessible by software through a normal MPU
peripheral access.
UART1
APLL output
sleep clock
ULPD/APLL
UART2 UART3
SPRU748A