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Si5110
10
Rev. 1.5
Table 6. AC Characteristics (Transmitter Clock Multiplier)1
(VDD = 1.8 V ±5%, TA = –20 to 85 °C)
Parameter
Symbol
Test Condition
Min
Typ
Max
Unit
Jitter Transfer Bandwidth
OCH48: 2.48832 Gbps
FEC: 2.666676 Gbps
JBW
BWSEL[1:0] = 00
BWSEL[1:0] = 01
BWSEL[1:0] = 10
BWSEL[1:0] = 11
—
12
50
120
200
kHz
Jitter Transfer Peaking
—
0.05
0.1
dB
Acquisition Time
TAQ
Valid REFCLK
BWSEL[1:0] = 11
——
20
ms
Input Reference Clock Frequency
RCFREQ
REFRATE = 1
—
155
169
MHz
REFRATE = 0
—
78
84.4
MHz
Input Reference Clock Duty
Cycle
RCDUTY
40
—
60
%
Input Reference Clock Frequency
Tolerance
RCTOL
–100
—
100
ppm
Random rms Jitter Generation,
TXCLKOUT (PRBS 31)2
JGEN(rms)
BWSEL[1:0] = 00
BWSEL[1:0] = 01
BWSEL[1:0] = 10
BWSEL[1:0] = 11
2.6
2.0
1.7
3.7
2.6
2.1
mUIrms
Random Peak-to-Peak Jitter
Generation, TXCLKOUT
(PRBS 31)2
JGEN(PP)
BWSEL[1:0] = 00
BWSEL[1:0] = 01
BWSEL[1:0] = 10
BWSEL[1:0] = 11
25
23
22
21
36
32
28
27
mUIPP
Notes:
1. Bellcore specifications: GR-253-CORE, Issue 3, September 2000.
2. Full duplex, REFCLK = 155 MHz.