HMC1197LP7FE datasheet(42/57 Pages) AD

42 / 57 page

For price, delivery, and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824

Phone: 978-250-3343

Fax: 978-250-3373

Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

HMC1197LP7FE

v03.0314

Wideband direct Quadrature Modulator

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

2.12

reg 0ah Vco autocal configuration register deFault 2046 h

Bit

Type

Name

Width

Default

Description

[2:0]

R/W

Vtune Resolution

Used by internlan AutoCal state machine

R Divider Cycles

0 - 1

1 - 2

2 - 4

3 - 8

4 - 32

5 - 64

6 - 128

7 - 256

div cycles for frequency measurement. Measurement

should last > 4 µsec.

Note: 1 does not work if R divider = 1.

[10:3]

R/W

Reserved

16d

Reserved

[11]

R/W

AutoCal Disable

0 = AutoCal Enabled

1 = AutoCal disabled

[12]

R/W

Reserved

[14:13]

R/W

FSM/VSPI Clock Select

Set the AutoCal FSM and VSPI Clock (50 MHz maximum)

0: Input Crystal Reference

1: Input Crystal Reference/4

2: Input Crystal Reference/16

3: Input Crystal Reference/32

[16:15]

R/W

Reserved

[17]

R/W

Auto relock - one Try

0: Does not attempt to relock if lock is lost

1: Attempts to relock if Lock Detect fails for any reason.

Only tries once.

[23:18]

R/W

Reserved

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