AD9858/PCBZ Analog Devices Inc, AD9858/PCBZ Datasheet - Page 22

• Manufacturer Part Number: AD9858/PCBZ
• Description: DIGITAL SYNTHESIZER
• Manufacturer: Analog Devices Inc

Specifications of AD9858/PCBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Direct Digital Synthesizer
• Kit Application Type: Clock & Timing
• Silicon Core Number: AD9858
• Kit Contents: Board
• Design Resources: Low Jitter Sampling Clock Generator for High Performance ADCs Using AD9958/9858 and AD9515 (CN0109)
• Main Purpose: Timing, Direct Digital Synthesis (DDS)
• Utilized Ic / Part: AD9858/TL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Embedded: -
• Primary Attributes: -
• Secondary Attributes: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: AD9858/PCB; AD9858/PCB

AD9858
REGISTER MAP
The registers are listed in Table 6. The serial address and parallel address numbers associated with each of the registers are shown in
hexadecimal format. Square brackets [] are used to reference specific bits or ranges of bits. For example, [3] designates Bit 3, and [7:3]
designates the range of bits from 7 down to 3, inclusive.
Table 6.
Register
Name
Control
function
register
(CFR)
Delta freq.
tuning
word
(DFTW)
Delta
frequency
ramp rate
(DFRRW)
Frequency
Tuning
Word 0
(FTW0)
Phase
Offset
Word 0
(POW0)
Frequency
Tuning
Word 1
(FTW1)
Phase
Offset
Word 1
(POW1)
Frequency
Tuning
Word 2
(FTW2)
Ser
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
Address
Par
0x00
[7:0]
0x01
[15:8]
0x02
[23:16]
0x03
[31:24]
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
0x19
(MSB)
Bit 7
Not
used
Freq.
sweep
enable
Auto Clr
freq.
accum
Frequency detect
pump current
mode charge
(see Table 7)
Not used
Not used
Bit 6
2 GHz
divider
disable
Enable
sine
output
Auto Clr
phase
accum
Bit 5
SYNCLK
disable
Charge
pump
offset
Load
delta
freq
timer
mode charge pump current
Delta Frequency Ramp Rate Word[15:8]
Delta Frequency Ramp Rate Word[7:0]
Frequency Tuning Word 0[23:16]
Frequency Tuning Word 0[31:24]
Frequency Tuning Word 1[23:16]
Frequency Tuning Word 1[31:24]
Frequency Tuning Word 2[23:16]
Frequency Tuning Word 2[31:24]
Frequency Tuning Word 0[15:8]
Frequency Tuning Word 1[15:8]
Frequency Tuning Word 2[15:8]
Final closed-loop
Frequency Tuning Word 0[7:0]
Frequency Tuning Word 1[7:0]
Frequency Tuning Word 2[7:0]
Delta Frequency Word[23:16]
Delta Frequency Word[31:24]
Rev. C | Page 22 of 32
Delta Frequency Word[15:8]
Delta Frequency Word[7:0]
(see Table 8)
Phase Offset Word 0[7:0]
Phase Offset Word 1[7:0]
Bit 4
Mixer
power-
down
Phase detector
divider ratio (N)
(see Table 10)
Clear
freq
accum
Phase Offset Word 0[13:8]
Phase Offset Word 1[13:8]
Bit 3
Phase
detect
power-
down
Clear
phase
accum
Bit 2
Power-
down
Charge
pump
polarity
Not
used
Wide closed-loop mode
charge pump current
(see Table 9)
Bit 1
SDIO
input
only
Phase detector
divider ratio (M)
(see Table 11)
Fast
lock
enable
(LSB)
Bit 0
LSB first
FTW for
fast lock
Default
Value
0x18
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
0x00
Profile
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0
0
0
0
0
0
1
1
1
1
1
1
2
2
2
2