HMC1197LP7FE datasheet(46/57 Pages) AD

46 / 57 page

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HMC1197LP7FE

v03.0314

Wideband direct Quadrature Modulator

w/ Fractional-n Pll & Vco, 100 - 4000 MHz

2.20

reg 14h auxiliary SPi register

BIT

TYPE

NAME

Width

Default

DESCRIPTION

[0]

R/W

Aux SPI Mode

1- Use the 3 outputs as an SPI port

0- Use the 3 outputs as a static GPO port along with Reg 14h[3:1]

[3:1]

R/W

Aux GPO Values

3 Output values can be set indivually when

Reg 10h [0] = 1

[4]

R/W

Aux GPO 3.3 V

0- 1.8 V output out of the Auxiliary GPO pins when

Reg 10h [0] = 1

1- 3.3 V output out of the Auxiliary GPO pins when

Reg 10h [0] = 1

[8:5]

R/W

Reserved

[9]

R/W

Phase Sync

When set, CHIP_EN pin is used as a trigger for phase

synchronization. Can be used to synchronize multiple

HMC1197LP7FE, or to along with the Reg 1Ah value to phase step the

output.

(Exact Frequency Mode must be enabled)

[11:10]

R/W

Aux SPI GPO Output

Option to send GPO multiplexed data (ex Lock Detect) to one of the

auxiliary outputs

0- None

1 - to [0]

2 - to [1]

3 - to [2]

[13:12]

R/W

Aux SPI Outputs

When disabled:

0 - Outputs Hi Z

1 - Outputs stay driven

2 - Outputs driven to high

3 - Outputs driven to low

[23:14]

R/W

Reserved

2.21

reg 15h Manual Vco config register default F48a0 h

BIT

TYPE

NAME

Width

Default

DESCRIPTION

[0]

R/W

Manual Calibration Mode

1- VCO subsystem manual calibration enabled

0- VCO subsystem manual calibration disabled

[5:1]

R/W

Capacitor Switch Setting

16d

10h

capacitor switch setting

[8:6]

R/W

Manual VCO Selection

selects the VCO core sub-band

[9]

R/W

Manual VCO Tune Enable

1- Manual VCO tuning enabled

0- Manual VCO tuning disabled

[15:10]

R/W

Reserved

18d

12h

Reserved

[16]

R/W

Enable Auto-Scale CP cur-

rent

1 - Automatically scale CP current based on VCO frequency and

capacitor setting

0- Don’t scale CP current

[23:17]

R/W

Reserved

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