AD-DPGIOZ datasheet(24/61 Pages) AD

24 / 61 page

AD9961/AD9963

Data Sheet

Rev. A | Page 24 of 60

Addr

Default

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

0x71

0x00

ADCCLKSEL

DACCLKSEL

Unused

DLL_REF_EN

N[3:0]

0x72

0x01

DLL_Locked

DLLDIV

M[4:0]

0x75

0x00

DLL_RESB

0x77

0x00

CONV_TIME[1:0]

Unused

AUXADC_CH[2:0]

0x78

Varies

AUXADC[11:4]

0x79

Varies

AUXADC[3:0]

CONV_COMPL

CHAN_SEL[2:0]

0x7A

0x00

AUXADC_EN

AUXADC_RESB

Unused

AUXDIV[2:0]

0x7B

0x00

TMPSNS_EN

Unused

AUXREF_ADJ[2:0]

Unused

0x7D

0x00

Unused

RX_FSADJ[4:0]

0x7E

0x00

Unused

RXTrim_EN

RXTrim_Fine

AUXCML_EN

RX_DC

0x7F

0x00

RXI_Trim[9:2]

0x80

0x00

Unused

RXI_Trim[1:0]

GAINCAL_

ENI

0x81

0x00

RXQ_Trim[9:2]

0x82

0x00

Unused

RXQ_Trim[1:0]

GAINCAL_

ENQ

0xFF

0x00

Unused

Update

CONFIGURATION REGISTER BIT DESCRIPTIONS

Table 15.

Address

Bit(s)

Parameter

Function

Serial Port Config

0x00

7, 0

SDIO

0: use SDIO as both input and output data

1: use SDIO pin as input data only

6, 1

LSB_First

0: first bit of serial data is MSB of data byte.

1: first bit of serial data is LSB of data byte.

5, 2

RESET

A transition from 0 to 1 on this bit resets the device. All registers but

ADC Address

0x05

1:0

ADDRQ, ADDRI

Bits are set to determine which device on chip receives ADC specific

write commands. ADC specific write commends include writes to

Registers 0x0F and Register 0x10. These writes also require a rising end

on the Update bit (Register 0xFF, Bit 0).

00: no ADCs are addressed.

01: I ADC is addressed.

10: Q ADC is addressed

11: both I and Q ADCs are addressed.

CM Buffer Enable

0x0F

RXCML

Enable control for the RXCML output buffer.

Note that updating this bit also requires writing to Register 0x05 and

section.

0: RXCML pin is high impedance.

1: RXCML pin is a low impedance 1.4 V output.

ADC Offset

0x10

5:0

ADC_OFFSET[5:0]

Adds a dc offset to the ADC output of whichever ADC is addressed by

011111: offset = +31 LSBs

…

000001: offset = +1 LSB

000000: offset = 0 LSB

111111: offset = −1 LSB

…

100000: offset = −32 LSBs

Digital Filters

0x30

7:6

Unused

DEC_BP

1: bypass 2× decimator in Rx path (D0).

INT1_BP

1: bypass 2× Half-Band Interpolation Filter 1 (INT1).

INT0_BP

1: bypass 2× Half-Band Interpolation Filter 0 (INT0).

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