NEC V850E/RS1 User Manual page 409

(2) UARTAn control register 1 (UAnCTL1)
The UAnCTL1 register is an 8-bit register that selects the clock of UARTAn.
This register can be read or written in 8-bit units only.
Reset input clears this register to 00H.
Symbol
UAnCTL1
Remark:
Caution:
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Chapter 12 Asynchronous Serial Interface A (UARTA)
Figure 12-3: UARTAn Control Register 1 (UAnCTL1) Format
Address: UA0CTL1: FFFFFA01H, UA1CTL1: FFFFFA11H
7 6 5
0 0 0
n = 0 to 1
UAnCKS3 UAnCKS2 UAnCKS1
0 0
0 0
0 0
0 0
0 1
0 1
0 1
0 1
1 0
1 0
1 0
1 0
Other than above
This register can be rewritten only when the UAnPWR bit of the UAnCTL0 register = 0.
User's Manual U16702EE3V2UD00
4 3 2
0 UAnCKS3 UAnCKS2 UAnCKS1 UAnCKS0
Selection of base clock (f
UAnCKS0
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
0 0
0 1
1 0
1 1
1 0 Address R/W After Reset
R/W
)
XCLK
f
XX
f /2
XX
f /4
XX
f /8
XX
f /16
XX
f /32
XX
f /64
XX
f /128
XX
f /256
XX
f /512
XX
f /1024
XX
External clock (ASCKAn pin)
Setting prohibited
00H
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