AD9864 Просмотр технического описания (PDF) - Analog Devices

Номер в каталоге

Компоненты Описание

производитель

AD9864

IF Digitizing Subsystem

Analog Devices 

AD9864

Address (Hex)

0x13

Bit

Breakdown Width

(7:0)

8

Default

Value

0x3C

Name

CKN (7:0)

0x14

(6)

1

0

CKF

(5)

1

0

CKINV

(4:2)

3

0x00

CKI

(1:0)

2

0x03

CKTM

0x15

(5:0)

0x16

(7:0)

SSI CONTROL

0x18

(7:0)

6

0x00

CKFA (13:8)

8

0x04

CKFA (7:0)

8

0x12

SSICRA

0x19

(7:0)

8

0x07

SSICRB

0x1A

(3:0)

ADC TUNING

0x1C

(1)

(0)

0x1D

(3:0)

0x1E

(5:0)

0x1F

(7:0)

4

0x01

SSIORD

1

0

TUNE_LC

1

0

TUNE_RC

3

0x00

CAPL1 (2:0)

6

0x00

CAPL0 (5:0)

8

0x00

CAPR

TEST REGISTERS AND SPI PORT READ ENABLE

0x37–0x39

(7:0)

8

0x00

0x3A

(7:4)

4

0x00

(3)

1

0

(2:0)

3

0x00

0x3B

(7:4)

4

0x00

(3)

1

0

(2:0)

3

0x00

0x3C–0x3E

(7:0)

8

0x00

0x3F

(7:0)

8

Subject

to

Change

TEST

TEST

SPIREN

TEST

TEST

TRI

TEST

TEST

ID

Description

Synthesized frequency divisor (8 LSBs of a 13-bit word).

Default yields 300 kHz from 18 MHz; Minimum = 3,

Maximum = 8191.

Enable fast acquire.

Invert charge pump (0 = source current to increase VCO

frequency).

Charge pump current in normal operation.

IPUMP = (CKI + 1) × 0.625 mA.

Manual control of CLK charge pump (0 = Off, 1 = Up, 2 = Down,

and 3 = Normal).

CK fast acquire time unit (6 LSBs of a 14-bit word).

CK fast acquire time unit (8 LSBs of a 14-bit word).

SSI Control Register A. See Table 8. Default is FS and CLKOUT

three-stated.

SSI Control Register B. See Table 8 (16-Bit Data, maximum drive

strength).

Output rate divisor. fCLKOUT = fCLK/SSIORD.

Perform tuning on LC portion of the ADC (cleared when done).

Perform tuning on RC portion of the ADC (cleared when done).

Coarse capacitance setting of LC tank (LSB is 25 pF, differential).

Fine capacitance setting of LC tank (LSB is 0.4 pF, differential).

Capacitance setting for RC resonator (64 LSB of fixed

capacitance).

Factory test mode. Do not use.

Factory test mode. Do not use.

Enable read from SPI port.

Factory test mode. Do not use.

Factory test mode. Do not use.

Three-state DOUTB.

Factory test mode. Do not use.

Factory Test mode. Do not use.

Revision ID (read-only); A write of 0x99 to this register is

equivalent to a power-on reset.

Rev. 0 | Page 16 of 44

Share Link: