S2092
SERIAL BACKPLANE RETIMER DEVICE
Figure 3. Input Jitter Tolerance Specification
CHARACTERISTICS
Input Jitter Tolerance
Sinusodal
Input Jitter
Amplitude
Input jitter tolerance is defined as the peak to
peak amplitude of sinusoidal jitter applied on the
input signal that causes an equivalent 1 dB opti-
cal/electrical power penalty. See Figure 3.
15
1.5
(UI p-p)
Jitter Transfer
The jitter transfer function is defined as the ratio of
jitter on the output signal to the jitter applied on the
input signal versus frequency. Jitter transfer require-
ments are shown in Figure 4. The measurement con-
dition is that input sinusoidal jitter up to the mask
level in Figure 4 be applied.
0.15
f0
f2
f3
ft
f1
f0
(Hz)
f1
(Hz)
f2
f3
ft
Data Rate
(Hz) (kHz) (kHz)
Jitter Generation
2.488 Gbps
10
600
6000 100 1000
The jitter of the serial data outputs shall not exceed
the value specified in Table 7. The conditions are
stated with a serial data input with no jitter presented
on SERDATIP/N. (See Table 7).
Figure 4. Jitter Transfer Specification
P
slope = -20 dB/decade
Jitter
Acceptable
Transfer
Range
fc
Frequency
fc
(kHz)
P
(dB)
Data Rate
2.488 Gbps
2000
0.1
July 10, 2000 / Revision A
4
AMCC [ APPLIED MICRO CIRCUITS CORPORATION ]
