User Manual
104
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
System Control Unit - Digital Modules (SCU-DM)
7.3.6
CGU Registers
The registers of the clock generation unit for PLL and oscillator control is not affected by the soft reset.
Therefore the system clock configuration and frequency is maintained across these types of reset.
Unless otherwise stated, the reset value as stated for the following registers apply only with Power-On reset,
Brown-Out reset, Hard reset, WDT1 reset or Wake-up reset.
7.3.6.1
PLL Oscillator Register
These registers control the setting and trimming of OSC_PLL, the Power Down of XTAL (OSC_HP) and the
control and status monitor of oscillator watchdog.
OSC Control Register
SCU_OSC_CON
Offset
Reset Value
OSC Control Register
0B0
H
Field
Bits
Type
Description
RES
31:7
r
Reserved
This bit field is always read as zero.
RES
6:5
r
Reserved
This bit field is always read as zero.
XPD
4
rwpw
XTAL (OSC_HP) Power Down Control
This is a PASSWD protected bit. When the protection
scheme (see
) is activated (default), this bit
cannot be written directly.
Note:
When XPD is set, switch of clock source to
internal oscillator has to be done
asynchronous.
0
B
XTAL (OSC_HP) is not powered down.
1
B
XTAL (OSC_HP) is powered down.
31
16
r
RES
15
7
r
RES
6
5
r
RES
44
rwpw
XPD
33
r
OSC2
L
22
rwh1
OSCW
DTR*
1
0
rwpw
OSCSS