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AD9864 Datasheet(PDF) 17 Page - Analog Devices

Part # AD9864
Description  IF Digitizing Subsystem
PDF  48 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9864 Datasheet(HTML) 17 Page - Analog Devices

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AD9864
Data Sheet
Rev. A | Page 16 of 47
Address
(Hex)
Bit(s)
Width
Default
Value
Name
Description
0x14
6
1
0
CKF
Enable fast acquire.
5
1
0
CKINV
Invert charge pump (0 = source current to increase VCO frequency).
[4:2]
3
0x00
CKI
Charge pump current in normal operation. IPUMP = (CKI + 1) × 0.625 mA.
[1:0]
2
0x03
CKTM
Manual control of CLK charge pump (0 = off, 1 = up, 2 = down, and
3 = normal).
0x15
[5:0]
6
0x00
CKFA [13:8]
CK fast acquire time unit (6 LSBs of a 14-bit word).
0x16
[7:0]
8
0x04
CKFA [7:0]
CK fast acquire time unit (8 LSBs of a 14-bit word).
SSI Control
0x18
[7:0]
8
0x12
SSICRA
SSI Control Register A. See the SSI Control Registers section. Default is
FS and CLKOUT three-stated.
0x19
[7:0]
8
0x07
SSICRB
SSI Control Register B. See the SSI Control Registers section (16-bit data,
maximum drive strength).
0x1A
[3:0]
4
0x01
SSIORD
Output rate divisor. fCLKOUT = fCLK/SSIORD.
ADC Tuning
0x1C
1
1
0
TUNE_LC
Perform tuning on LC portion of the ADC (cleared when done).
0
1
0
TUNE_RC
Perform tuning on RC portion of the ADC (cleared when done).
0x1D
[3:0]
3
0x00
CAPL1 [2:0]
Coarse capacitance setting of LC tank (LSB is 25 pF, differential).
0x1E
[5:0]
6
0x00
CAPL0 [5:0]
Fine capacitance setting of LC tank (LSB is 0.4 pF, differential).
0x1F
[7:0]
8
0x00
CAPR
Capacitance setting for RC resonator (64 LSB of fixed capacitance).
Test Registers and SPI Port Read Enable
0x37
[7:0]
8
0x00
TEST
Factory test mode. Do not use.
0x38
[7:1]
7
0x00
TEST
Factory test mode. Do not use.
0
1
0
DACCR
Manual feedback DAC control
0x39
[7:0]
8
0x00
DACDATA
Feedback DAC data setting in manual mode.
0x3A
[7:4]
4
0x00
TEST
Factory test mode. Do not use.
3
1
0
SPIREN
Enable read from SPI port.
[2:0]
3
0x00
TEST
Factory test mode. Do not use.
0x3B
[7:4]
4
0x00
TEST
Factory test mode. Do not use.
3
1
0
TRI
Three-state DOUTB.
[2:0]
3
0x00
TEST
Factory test mode. Do not use.
0x3C to
0x3D
[7:0]
8
0x00
TEST
Factory test mode. Do not use.
0x3E
7
1
0
TEST
Factory test mode. Do not use.
6
1
0
OVL
ADC overload detector.
[5:3]
3
0
TEST
Factory test mode. Do not use.
2
2
0
RC_Q
RC Q enhancement.
1
1
0
RC_BYP
Bypass RC resonator.
0
1
0
SC_BYP
Bypass SC resonators.
0x3F
[7:0]
8
Subject
to change
ID
Revision ID (read-only). A write of 0x99 to this register is equivalent to a
power-on reset.



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