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Chapter 16
Asynchronous Serial Interface (UARTA)
Preliminary User’s Manual U17566EE1V2UM00
16.6.2
Baud Rate Generator registers
(1)
UAnCTL1 - UARTAn control register 1
The UAnCTL1 register is an 8-bit register that selects the UARTAn base clock.
Access
This register can be read or written in 8-bit units.
Address
<base> + 1
H
Initial Value
00
H
. This register is cleared by any reset.
Caution
Clear the UAnCTL0.UAnPWR bit to 0 before rewriting the UAnCTL1 register.
7
6
5
4
3
2
1
0
0
0
0
0
0
UAnCKS2 UAnCKS1 UAnCKS0
R
R
R
R
R
R/W
R/W
R/W
Table 16-7
UAnCTL1 register contents
Bit position
Bit name
Function
2 to 0
UAnCKS[2:0]
Base clock f
UCLK
selection:
UAnCKS2
UAnCKS1
UAnCKS0 Base clock f
UCLK
0
0
0
PCLK1
0
0
1
PCLK2
0
1
0
PCLK3
0
1
1
PCLK4
1
0
0
PCLK5
1
0
1
PCLK6
1
1
0
PCLK7
1
1
1
PCLK8
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