SI5375 Datasheet, PDF(41/54 Page) Silicon Laboratories – 4-PLL ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

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SI5375 Datasheet, PDF (41/54 Pages) Silicon Laboratories – 4-PLL ANY-FREQUENCY PRECISION CLOCK MULTIPLIER/JITTER ATTENUATOR

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Si5375

Bit

Name

PARTNUM_RO [3:0]

REVID_RO [3:0]

Type

Reset value = 1011 0010

Bit

Name

7:4 PARTNUM_RO [11:0] Device ID (2 of 2).

0000 0100 1011: Si5375

3:0

REVID_RO [3:0] Device Revision Level.

0010: Revision C

Others: Reserved.

Function

Bit

Name RST_REG ICAL

Type

R/W

Reset value = 0000 0000

Bit

Name

Function

RST_REG Internal Reset (Same as Pin Reset).

Note: The I2C port may not be accessed until 10 ms after RST_REG is asserted.

0: Normal operation.

1: Reset of all internal logic. Outputs disabled or tristated during reset.

ICAL

Start an Internal Calibration Sequence.

For proper operation, the device must go through an internal calibration sequence.

ICAL is a self-clearing bit. Writing a one to this location initiates an ICAL. The

calibration is complete once the LOL alarm goes low. A valid stable clock (within

100 ppm) must be present to begin ICAL.

Note: Any divider, CLKINn_RATE or BWSEL_REG changes require an ICAL to take

effect.

0: Normal operation.

1: Writing a "1" initiates internal self-calibration. Upon completion of internal self-cali-

bration, LOL will go low.

5:0

Reserved

Rev. 1.0

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