Register Field Name
Address
Base
Bit
Length
R/W/RW
Description
Device Mode
IDPA_INTG
67
0
15
RW
The terms of an a + b/c desired divider
setting must be processed into IDPA_INTG,
IDPA_RES, and IDPA_DEN register terms.
INTG = floor(((a*c+b)*128/c) - 512).
READY
IDPA_RES
69
0
15
RW
res = mod(b*128, c)
READY
IDPA_DEN
6B
0
15
RW
den = c
READY
PDIV_DIV
75
0
5
RW
Chooses the PLL prescalar divide ratio.
READY
USYS_START
B8
0
8
RW
User defined application startup behavior.
Flags for SW what to do at the startup,
for example moving to ACTIVE on its own
upon startup or waiting in READY state for
a command. Used only upon startup, Initial-
ized from NVM.
READY
PLL_MODE
BE
2
4
RW
Sets PLL BW. See
PLL Reference Frequency and VCO Fre-
quency on page 18
.
READY
XOSC_CINT_ENA
BF
7
1
RW
Enables a fixed 7.84 pf of internal
loading capacitance to values set by
XOSC_CTRIM_XA/XB registers. Refer to
Section 3.2 Calculating Crystal Loading Ca-
pacitance
for information on use of this reg-
ister.
READY
XOSC_CTRIM_XA
C0
0
6
RW
Load capacitance trim on XA. Refer to
tion 3.2 Calculating Crystal Loading Capaci-
tance
for information on use of this register.
READY
XOSC_CTRIM_XB
C1
0
6
RW
Load capacitance trim on XB. Refer to
tion 3.2 Calculating Crystal Loading Capaci-
tance
for information on use of this register.
READY
Si5332-AM1/2/3 Automotive Grade Device Reference Manual • Si5332 Common Registers
Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • [email protected] • www.skyworksinc.com
41
Rev. 0.3 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • July 26, 2021
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