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AD9864-EB Datasheet(PDF) 16 Page - Analog Devices

Part # AD9864-EB
Description  IF Digitizing Subsystem
PDF  44 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9864-EB Datasheet(HTML) 16 Page - Analog Devices

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AD9864
Rev. 0 | Page 16 of 44
Address (Hex)
Bit
Breakdown
Width
Default
Value
Name
Description
0x13
(7:0)
8
0x3C
CKN (7:0)
Synthesized frequency divisor (8 LSBs of a 13-bit word).
Default yields 300 kHz from 18 MHz; Minimum = 3,
Maximum = 8191.
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 Table 8. Default is FS and CLKOUT
three-stated.
0x19
(7:0)
8
0x07
SSICRB
SSI Control Register B. See Table 8 (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
0x37–0x39
(7:0)
8
0x00
TEST
Factory test mode. Do not use.
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–0x3E
(7:0)
8
0x00
TEST
Factory Test mode. Do not use.
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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