HMC704LP4E datasheet(39/44 Pages) AD

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HMC704LP4E

v04.0215

8 GHZ FRACTIONAL-N PLL

For price, delivery and to place orders: Analog Devices, Inc., One Technology Way, Norwood, MA 02062

978-250-3343 tel • 978-250-3373 fax • Order online at www.analog.com/hittitemw

Application support: Phone: 978-250-3343 or RFMG-apps@analog.com

Table 20. Reg 07h Lock Detect Register

BIT

TYPE

NAME

DEFLT

DEsCRIPTION

[2:0]

R/W

lkd_wincnt_max

Lock Detect window sets the number of consecutive counts of

divided VCO that must land inside the Lock Detect Window to

declare LOCK

0: 5

1: 32

2: 96

3: 256

4: 512

5: 2048

6: 8192

7: 65535

[3]

R/W

Enable Internal Lock Detect

[5:4]

R/W

Reserved

[6]

R/W

Lock Detect Window type

Lock Detection Window Timer selection

1: Digital programmable timer

0: Analog one shot, nominal +/-10nsec window

[9:7]

R/W

LD Digital Window duration

Lock Detection - Digital Window Duration

0: 1/2 cycle

1: 1 cycle

2: 2 cycles

3: 4 cycles

4: 8 cycles

5: 16 cycles

6: 32 cycles

7: 64 cycles

[11:10]

R/W

LD Digital Timer Freq Control

Lock Detect Digital Timer Frequency Control

“00” fastest “11” slowest

[12]

R/W

LD Timer Test Mode

1: Force Timer ON Continuously - For Test Only

0: Normal Timer operation - one shot

[13]

R/W

Auto Relock - One Try

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

Only tries once.

Table 21. Reg 08h Analog EN Register

BIT

TYPE

NAME

DEFLT

DEsCRIPTION

R/W

bias_en

Enables main chip bias reference. Program 1b

R/W

cp_en

Charge pump enable Program 1b

R/W

pd_en

PD enable Program 1b

R/W

refbuf_en

Reference path buffer enable Program 1b

R/W

vcobuf_en

VCO path RF buffer enable Program 1b

R/W

GPO/LDO/sDO_pad_en

0 - Pin LD_sDO disabled

1 - and Reg0Fh[7]=1, Pin LD_sDO is always on (required to output

LD state or view GPO signals).

1 - and Reg0Fh[7]=0, Pin LD_sDO only outputs sDO data provided

Reg0Fh[6]=0.

R/W

Reserved

Program 1b

R/W

VCO_Div_Clk_to_dig_en

VCO Divider Clock to Digital Enable Program 1b

R/W

Reserved

Program 0

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For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

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