AD9689-2000EBZ datasheet(107/134 Pages) AD

107 / 134 page

Data Sheet

AD9689

Rev. A | Page 107 of 134

Addr.

Name

Bit(s) Bit Name

Setting

Description

Reset

Access

0x0311 DDC0 input

select

[7:4] DDC0 decimation rate

select

Only valid when Register 0x0310, Bits[2:0] = 3'b111.

0x0

R/W

0000

TB2 + HB4 + HB3 + HB2 + HB1 filter selection: decimate by 48

(complex to real disabled), or decimate by 24 (complex to real

enabled).

0010

FB2 + HB1 filter selection: decimate by 10 (complex to real

disabled), or decimate by 5 (complex to real enabled).

0011

FB2 + HB2 + HB1 filter selection: decimate by 20 (complex to real

disabled), or decimate by 10 (complex to real enabled).

0100

FB2 + HB3 + HB2 + HB1 filter selection: decimate by 40 (complex

to real disabled), or decimate by 20 (complex to real enabled).

0111

TB1 filter selection: decimate by 3 (decimate by 1.5 not

supported).

1000

FB2 + TB1 filter selection: decimate by 15 (decimate by 7.5 not

supported).

1001

HB2 + FB2 + TB1 filter selection: decimate by 30 (decimate by 15

not supported).

Reserved

Reserved.

0x0

DDC0 Q input select

0x0

R/W

Channel A.

Channel B.

Reserved

Reserved.

0x0

DDC0 I input select

0x0

R/W

Channel A.

Channel B.

0x0314 DDC0 NCO

control

[7:4] DDC0 NCO channel

select mode

For edge control, the internal counter wraps after the

0x0

R/W

0000

Use Register 0x0314, Bits[3:0].

0001

GPIO_B0, GPIO_A0.

0010

GPIO_B1, GPIO_A1.

0011

GPIO_A1, GPIO_A0.

0100

GPIO_B1, GPIO_B0.

0101

GPIO_B1, GPIO_A1, GPIO_B0, GPIO_A0.

0110

GPIO_B1, GPIO_B0, GPIO_A1, GPIO_A0.

1000

Increment internal counter on rising edge of the GPIO_A0 pin.

1001

Increment internal counter on rising edge of the GPIO_A1 pin.

1010

Increment internal counter on rising edge of the GPIO_B0 pin.

1011

Increment internal counter on rising edge of the GPIO_B1 pin.

[3:0] DDC0 NCO register

map channel select

NCO channel select register map control.

0x0

R/W

0000

Select NCO Channel 0.

0001

Select NCO Channel 1.

0010

Select NCO Channel 2.

0011

Select NCO Channel 3.

0100

Select NCO Channel 4.

0101

Select NCO Channel 5.

0110

Select NCO Channel 6.

0111

Select NCO Channel 7.

1000

Select NCO Channel 8.

1001

Select NCO Channel 9.

1010

Select NCO Channel 10.

1011

Select NCO Channel 11.

1100

Select NCO Channel 12.

1101

Select NCO Channel 13.

1110

Select NCO Channel 14.

1111

Select NCO Channel 15.

AD9689-2000EBZ Datasheet(PDF) 107 Page - Analog Devices

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