Silicon Laboratories SI5322 Clock User Manual


 
Si53xx-RM
42 Rev. 0.5
Device Skew
Output Clock
Skew,
see Section 7.7.4
t
SKEW
of CKOUT_n to of
CKOUT_m,
CKOUT_n and
CKOUT_m at same
frequency and signal
format
PHASE OFFSET = 0
SQICAL = 1
CKOUT_ALWAYS_O
N=1

——100ps
Coarse Skew
Adjust Resolution
t
PHRES
Using CLAT[7:0]
register
—1/F
VCO
—ps
using INC/DEC pins
—1/F
VCO
—ps
Coarse Skew
Adjust Range
t
PHSRNG
Using CLAT[7:0]
register
—+
using INC/DEC pins
—+ s
Fine Skew Adjust
Resolution
t
FPHSRES
using FLAT[14:0]
register

—9 —ps
Fine Skew Adjust
Range
t
FPHSRNG
using FLAT[14:0]
register

–110 110 ps
Phase Offset
Resolution
t
OFSTRES
using PHASEOFF-
SETn[7:0] registers

—N1_HS/
f
VCO
Phase Offset
Range
t
OFSTRNG
using PHASEOFF-
SETn[7:0] registers

–128 x
t
OF-
STRES
—127 x
t
OF-
STRES
PLL Performance
Lock Time t
LOCKHW
RST with valid
CKIN to LOL;
BW = 100 Hz

—1.2sec
Pin Reset or
Register Reset to
Microprocessor
Access Ready
t
READY
 
——10ms
Reset to first on
CKOUT
t
START
Valid, stable clock on
CKIN
 
——1.2sec
Minimum Reset
Pulse Width
t
RSTMIN

1——µs
Lock Time t
LOCKMP
Start of ICAL to of
LOL,
lowest BW setting
35 1000 ms
Closed Loop Jitter
Peaking
J
PK

0.05 0.1 dB
Table 8. AC Characteristics—All Devices (Continued)
Parameter
Symbol Test Condition
Si5316
Si5322
Si5324
Si5325
Si5365
Si5366
Si5367
Si5368
Min Typ Max Units