Sub-Ghz Radio Hse32 Osc_In Capacitor Trim Register; (Subghz_Hseintrimr); Sub-Ghz Radio Hse32 Osc_Out Capacitor Trim Register; (Subghz_Hseouttrimr) - STMicroelectronics STM32WL5 Series Reference Manual

RM0453
5.10.55

Sub-GHz radio HSE32 OSC_IN capacitor trim register

(SUBGHZ_HSEINTRIMR)

Address offset: 0x911
Reset value: 0x12
This register is retained in Sleep mode, but lost in Deep-Sleep mode.
7 6
Res. Res.
Bits 7:6 Reserved, must be kept at reset value.
Bits 5:0 TRIM[5:0]: HSE32 XTAL mode OSC_IN load capacitor trimming
5.10.56

Sub-GHz radio HSE32 OSC_OUT capacitor trim register

(SUBGHZ_HSEOUTTRIMR)

Address offset: 0x912
Reset value: 0x12
This register is retained in Sleep mode, but lost in Deep-Sleep mode.
7 6
Res. Res.
Bits 7:6 Reserved, must be kept at reset value.
Bits 5:0 TRIM[5:0]: HSE32 XTAL mode OSC_OUT load capacitor trimming
5
rw
Load capacitor trimming step size ~0.47 pf.
0x00: minimum value ~11.3 pF
...
0x12 value ~20.3 pF (default)
...
0x2F: maximum capacitor value ~33.4 pF
Others: reserved
5
rw
Load capacitor trimming step size ~0.47 pf.
0x00: minimum value ~11.3 pF
...
0x12 value ~20.3 pF (default)
...
0x2F: maximum capacitor value ~33.4 pF
Others: reserved
4 3
TRIM[5:0]
rw rw
4 3
TRIM[5:0]
rw rw
RM0453 Rev 5
Sub-GHz radio (SUBGHZ)
2 1
rw rw
2 1
rw rw
0
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0
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