ADRF6821 datasheet(47/61 Pages) AD

47 / 61 page

Data Sheet

ADRF6821

Rev. A | Page 47 of 61

Address: 0x1021, Reset: 0xFF, Name: BLOCK_RESETS

RSTB - Delta-Sigm a Modulator Referenc e

Counters , Core, Output Stage (+ N Div ider)

RSTB - Loc k detec t

RSTB - Delta-Sigm a Modulator Core

and Output Stage (+ N Div ider)

RSTB - Auto c alib ratio n o f Co unte rs

RSTB - De lta-Sig m a Mo d ulato r Outp ut

Stage (and N Div ider)

RSTB - N Div id e r

RSTB - Referenc e Div ider

[ 7 ] RES ERV ED

[ 0 ] ARS T B_BLO CK_D S M ALL ( R/W )

[ 6 ] ARS T B_BLO CK_LKD ( R/W )

[ 1 ] ARS T B_BLO CK_D S M CO RE ( R/W )

[ 5 ] ARS T B_BLO CK_AUT O CAL ( R/W )

[ 2 ] ARS T B_BLO CK_D S M O S T G ( R/W )

[ 4 ] ARS T B_BLO CK_N D IV ( R/W )

[ 3 ] ARS T B_BLO CK_RD IV ( R/W )

Table 46. Bit Descriptions for BLOCK_RESETS

Bits

Bit Name

Settings

Description

Reset

Access

RESERVED

Reserved.

0x1

R/W

ARSTB_BLOCK_LKD

RSTB – Lockdetect

0x1

R/W

ARSTB_BLOCK_AUTOCAL

RSTB – Autocalibration of Counters

0x1

R/W

ARSTB_BLOCK_NDIV

RSTB – N Divider (integer divider)

0x1

R/W

ARSTB_BLOCK_RDIV

RSTB – Reference Divider

0x1

R/W

ARSTB_BLOCK_DSMOSTG

RSTB – Delta-Sigma Modulator Output Stage (and N Divider)

0x1

R/W

ARSTB_BLOCK_DSMCORE

RSTB – Delta-Sigma Modulator Core and Output Stage (+N Divider)

0x1

R/W

ARSTB_BLOCK_DSMALL

RSTB – Delta-Sigma Modulator Reference Counters, Core, Output Stage

(+N Divider)

0x1

R/W

Address: 0x1109, Reset: 0x0A, Name: SIG_PATH_9_NORMAL

LO Output to Mix er Pow er Lev el

Aux iliary LO Output Pow er Lev el

[ 7 :5 ] RES ERV ED

[ 0 ] RES ERV ED

[ 4 :3 ] T RM _M IX LO D RV _D RV _P O UT ( R/W )

[ 2 :1 ] T RM _X LO D RV _D RV _P O UT ( R/W )

Table 47. Bit Descriptions for SIG_PATH_9_NORMAL

Bits

Bit Name

Settings

Description

Reset

Access

[7:5]

RESERVED

Reserved

0x0

[4:3]

TRM_MIXLODRV_DRV_POUT

LO Output to Mixer Power Level

0x1

R/W

[2:1]

TRM_XLODRV_DRV_POUT

Auxiliary LO Output Power Level

0x1

R/W

RESERVED

Reserved

0x0

Address: 0x1200, Reset: 0x89, Name: INT_L

Integer-N Word - Optionally Double

Buffered.

[7:0] INT_DIV[7:0] (R/W)

Table 48. Bit Descriptions for INT_L

Bits

Bit Name

Settings

Description

Reset

Access

[7:0]

INT_DIV,

Bits[7:0]

Integer-N Word—Optionally Double Buffered. Writing the LSB of the integer

word normally causes an autotune event.

0x189

R/W

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