AD9551/PCBZ Analog Devices Inc, AD9551/PCBZ Datasheet - Page 30

• Manufacturer Part Number: AD9551/PCBZ
• Description: BOARD EVAL FOR AD9951
• Manufacturer: Analog Devices Inc

Specifications of AD9551/PCBZ

• Main Purpose: Timing, Clock Generator
• Embedded: No
• Utilized Ic / Part: AD9551
• Primary Attributes: 2 Inputs, 2 Outputs, VCO
• Secondary Attributes: Graphical User Interface, USB Interface
• Silicon Manufacturer: Analog Devices
• Application Sub Type: Clock Generator
• Kit Application Type: Clock & Timing
• Silicon Core Number: AD9551
• Kit Contents: Board
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AD9551
Addr.
(Hex)
0x19
0x1A
0x1B
0x1C
0x1D
0x1E
0x1F
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x2A
0x2B
0x2C
0x2D
Register
Name
Output PLL
control
Input
receiver and
band gap
DCXO
control
DCXO
control
DCXO
control
REFA
frequency
REFA
frequency
REFA
frequency
REFA
frequency
REFA
frequency
REFA
frequency
REFA
frequency
REFA
frequency
REFB
frequency
REFB
frequency
REFB
frequency
REFB
frequency
REFB
frequency
REFB
frequency
REFB
frequency
REFB
frequency
(MSB)
Bit 7
Enable SPI
control
of OUT1
dividers
Receiver
reset
(aclr)
Disable
SPI
control of
DCXO
tuning
capacitor
DCXO varactor control[4:0]
Enable
SPI
control of
REFA SDM
Must be 0
Enable
SPI
control of
REFB
SDM
Must be 0
FRACA[3:0] (REFA SDM fractional part)
FRACB[3:0] (REFB SDM fractional part)
MODA[3:0] (REFA SDM modulus)
MODB[3:0] (REFB SDM modulus)
Bit 6
Enable SPI
control
of OUT2
divider
Enable SPI
control of
DCXO
varactor
Bypass
REFA SDM
Bypass
REFB SDM
NA[5:0] (REFA SDM integer part)
NB[5:0] (REFB SDM integer part)
Enable
REFA SDM
Enable
REFB
SDM
Bit 5
(00000 = maximum, 11111 = minimum)
Band gap voltage adjust[4:0]
FRACA[19:12] (REFA SDM fractional part)
FRACB[19:12] (REFB SDM fractional part)
FRACA[11:4] (REFA SDM fractional part)
FRACB[11:4] (REFB SDM fractional part)
MODA[11:4] (REFA SDM modulus)
MODB[11:4] (REFB SDM modulus)
Bit 4
Enable
REFB
Enable
REFA
Rev. B | Page 30 of 40
DCXO varactor control[12:5]
MODA[18:12] (REFA SDM modulus)
MODB[18:12] (REFB SDM modulus)
DCXO tuning capacitor control[5:0]
Bit 3
Unused
Unused
Unused
Unused
Unused
Unused
P
2
divider[5:0]
Bit 2
Select 2×
frequency
multiplier
Disable
REF SDM
PRBS
Unused
Unused
Unused
Unused
Unused
Bit 1
Enable
receiver
power-down
DCXO bypass
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Select 19.44 MHz input
mode divider
(LSB)
Bit 0
Enable SPI
control of
band gap
voltage
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Unused
Default
0x20
0x00
0x80
0x00
0x00
0x30
0x40
0x00
0x00
0x40
0x80
0x00
0x00
0x30
0x40
0x00
0x00
0x40
0x80
0x00
0x00