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AD9551/PCBZ Datasheet(PDF) 30 Page - Analog Devices

Part # AD9551/PCBZ
Description  Multiservice Clock Generator
PDF  40 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD9551/PCBZ Datasheet(HTML) 30 Page - Analog Devices

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AD9551
Rev. B | Page 30 of 40
Addr.
(Hex)
Register
Name
(MSB)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
(LSB)
Bit 0
Default
0x19
Output PLL
control
Enable SPI
control
of OUT1
dividers
Enable SPI
control
of OUT2
divider
P2 divider[5:0]
0x20
0x1A
Input
receiver and
band gap
Receiver
reset
(aclr)
Band gap voltage adjust[4:0]
(00000 = maximum, 11111 = minimum)
Enable
receiver
power-down
Enable SPI
control of
band gap
voltage
0x00
0x1B
DCXO
control
Disable
SPI
control of
DCXO
tuning
capacitor
Enable SPI
control of
DCXO
varactor
DCXO tuning capacitor control[5:0]
0x80
0x1C
DCXO
control
DCXO varactor control[12:5]
0x00
0x1D
DCXO
control
DCXO varactor control[4:0]
Select 2×
frequency
multiplier
DCXO bypass
Unused
0x00
0x1E
REFA
frequency
Enable
SPI
control of
REFA SDM
Bypass
REFA SDM
Enable
REFA SDM
Enable
REFB
Unused
Disable
REF SDM
PRBS
Select 19.44 MHz input
mode divider
0x30
0x1F
REFA
frequency
FRACA[19:12] (REFA SDM fractional part)
0x40
0x20
REFA
frequency
FRACA[11:4] (REFA SDM fractional part)
0x00
0x21
REFA
frequency
FRACA[3:0] (REFA SDM fractional part)
Unused
Unused
Unused
Unused
0x00
0x22
REFA
frequency
NA[5:0] (REFA SDM integer part)
Unused
Unused
0x40
0x23
REFA
frequency
Must be 0
MODA[18:12] (REFA SDM modulus)
0x80
0x24
REFA
frequency
MODA[11:4] (REFA SDM modulus)
0x00
0x25
REFA
frequency
MODA[3:0] (REFA SDM modulus)
Unused
Unused
Unused
Unused
0x00
0x26
REFB
frequency
Enable
SPI
control of
REFB
SDM
Bypass
REFB SDM
Enable
REFB
SDM
Enable
REFA
Unused
Unused
Unused
Unused
0x30
0x27
REFB
frequency
FRACB[19:12] (REFB SDM fractional part)
0x40
0x28
REFB
frequency
FRACB[11:4] (REFB SDM fractional part)
0x00
0x29
REFB
frequency
FRACB[3:0] (REFB SDM fractional part)
Unused
Unused
Unused
Unused
0x00
0x2A
REFB
frequency
NB[5:0] (REFB SDM integer part)
Unused
Unused
0x40
0x2B
REFB
frequency
Must be 0
MODB[18:12] (REFB SDM modulus)
0x80
0x2C
REFB
frequency
MODB[11:4] (REFB SDM modulus)
0x00
0x2D
REFB
frequency
MODB[3:0] (REFB SDM modulus)
Unused
Unused
Unused
Unused
0x00



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