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NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 172 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
Clock Divider Control Register 5 (CLK_DIVCTL5)
Register
Offset
R/W
Description
Reset Value
CLK_DIVCTL5
0x034
R/W
Clock Divider Control Register 5
0x0000_0000
31
30
29
28
27
26
25
24
UART7_N
UART7_S
UART7_SDIV
23
22
21
20
19
18
17
16
UART6_N
UART6_S
UART6_SDIV
15
14
13
12
11
10
9
8
UART5_N
UART5_S
UART5_SDIV
7
6
5
4
3
2
1
0
UART4_N
UART4_S
UART4_SDIV
Bits
Description
[31:29]
UART7_N
UART7 Engine Clock Divider
This field defines the clock divide number for clock divider to generate the engine clock for
UART7.
The actual clock divide number is (U 1). So,
ECLKuart7 = UART7_SrcCLK / (U 1).
[28:27]
UART7_S
UART7 Engine Clock Source Selection
This field selects which clock is used to be the source of engine clock for UART7 controller.
00 = UART7_SrcCLK is from XIN.
01 = Reserved.
10 = UART7_SrcCLK is from ACLKOut.
11 = UART7_SrcCLK is from UCLKOut.
[26:24]
UART7_SDIV
UART7 Engine Source Clock Divider
This field defines the source clock divide number for clock divider of APLL and UPLL output. This
field only takes effect while the UART7_S (CLK_DIVCTL5
[28:27]) is 2’b10 (APLL) or 2’b11
(UPLL).
If UART7_S (CLK_DIVCTL5
[28:27]) is 2’b10,
ACLKOut = APLLFout ÷ (UART 1).
If UART7_S (CLK_DIVCTL5
[28:27]) is 2’b11,
UCLKOut = UPLLFout ÷ (UART 1).
[23:21]
UART6_N
UART6 Engine Clock Divider
This field defines the clock divide number for clock divider to generate the engine clock for
UART6.
The actual clock divide number is (U 1). So,
ECLKuart6 = UART6_SrcCLK / (U 1).