SI5375 Datasheet, PDF (19/54 Pages) Silicon Laboratories – 4-PLL ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

Si5375
6. Register Map
The Si5375 has four identical register maps for each DSPLL having a unique I²C address. The I²C address is
11010 [A1] [A0] for the entire device. Each corresponding DSPLL [A1] [A0] address is fixed as below.
[A1] [A0]
DSPLLA: 0 0
DSPLLB: 0 1
DSPLLC: 1 0
DSPLLD: 1 1
Note: The Si5375 register map is similar to the Si5319, although not identical.
All register bits that are not defined in this map should always be written with the specified Reset Values. Writing
values other than the specified Reset Values may result in undefined device behavior. Registers not listed, such as
Register 64, should never be written to.
Register
D7
D6
D5
D4
D3
D2
D1
D0
Address
0
FREE_RUN CKOUT_
ALWAYS_
ON
BYPASS_
REG
2
BWSEL_REG[3:0]
RATE_REG [3:0]
3
VCO_
SQ_ICAL
FREEZE
5
ICMOS[1:0]
6
SFOUT_REG[2:0]
8
HLOG[1:0]
10
DSBL_ REG
11
PD_CK
16
CLAT[7:0]
17 FLAT_VALID
FLAT[14:8]
18
FLAT[7:0]
19
VALTIME[1:0]
LOCK[T2:0]
20
Write to 0 LOL_PIN IRQ_PIN
21
Write to 0 Write to 0
22
LOL_POL INT_POL
23
LOS_MSK LOSX_MSK
24
LOL_MSK
Rev. 1.0
19