IDT5V9885B Integrated Device Technology, Inc., IDT5V9885B Datasheet - Page 9

• Manufacturer Part Number: IDT5V9885B
• Description: 3.3V EEPROM PROGRAMMABLE CLOCK GENERATOR
• Manufacturer: Integrated Device Technology, Inc.

IDT5V9885B
3.3V EEPROM PROGRAMMABLE CLOCK GENERATOR
Modulation frequency:
F
F
F
Spread:
ΣΔ = SD
the number of samples used depends on the N
ΣΔ ≤ 63 - SS_OFFSET
±Spread% =
±Max Spread% / 100 = 1 / M
Profile:
Waveform starts with SS_OFFSET, SS_OFFSET + SD
PFD
VCO
SSC
= F
= F
= F
IN
PFD
PFD
0
+ SD
/ D (Eq. 11)
/ (4 * Nssc * Tssc)
* M
64 * (2*N[11:0] + A{3:0} + 1)
1
NOM
+ SD
(Eq. 12)
2
+ … + SD
ΣΔ * 100
NOM
or 2 / M
11
(Eq. 13)
NOM
(X2=1)
SSC
(Eq. 14)
value
Spread Spectrum Using Sinusoidal Profile
J
, SS_OFFSET + SD
9
J+1
, etc.
INDUSTRIAL TEMPERATURE RANGE