BAT32G1x9 user manual | Chapter 4 Clock generation circuit
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Rev.1.02
4.3.11
Subsystem Clock Select Register (SUBCKSEL)
The SUBCKSEL register is a register that selects the subsystem clock f
SUB
and the low-speed internal oscillator clock
F
IL
, as well as the low-speed internal oscillator clock frequency.
Set the SUBCKSEL registers with 8-bit memory operation instructions.
After generating a reset signal, the value of this register changes to "00H".
Figure 4-16
Format of subsystem clock selection registers (SUBCKSEL).
Address: 40020407H
reset:
00H R/W
SYMBOL
7
6
5
4
3
2
1
0
SUBCKSEL
LOCOSEL
Frequency selection for low-speed internal oscillator clocks
0
• Low speed internal oscillator clock frequency is 15K.
1
• Low speed internal oscillator clock frequency is 30K
SELLOSC
Selection of sub-system clock and low-speed internal oscillator clock
0
• Select the subsystem clock.
1
• Select low-speed internal oscillator clock.
0
0
0
0
0
0
LOCOSEL
SELLOSC