ACS8510 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'ACS8510' PDF : 69 Pages View PDF
ACS8510 Rev2.1 SETS
ADVANCED COMMUNICATIONS
Figure 3. Minimum Input Jitter Tolerance (OC-3/STM-1)
(for inputs supporting G.783 compliant sources)
FINAL
A0
A1
A2
A3
A4
f0
f1 f2
f3 f4
Jitter and wander frequency (log scale)
f5 f6
f8
f9
Table 6. Amplitude and Frequency Values for Jitter Tolerance
STM
level
Peak to peak amplitude
(unit Interval)
Frequency (Hz)
A0 A1 A2 A3 A4 F0 F1 F2 F3
F4
F5
F6 F7 F8 F9
STM-1 2800 311 39 1.5 0.15 12u 178u 1.6m 15.6m 0.125 19.3 500 6.5k 65k 1.3m
Output Clock Ports
The device supports a set of main output clocks,
TOUT0 and TOUT4, and a pair of secondary output
clocks, 'Frame-Sync' and 'Multi-Frame-Sync'. The
two main output clocks, T and T , are
OUT0
OUT4
independent of each other and are individually
selectable. The two secondary output clocks,
'Frame-Sync' and 'Multi-Frame-Sync', are derived
from T . The frequencies of the output clocks
OUT0
are selectable from a range of pre-defined spot
frequencies and a variety of output technologies
are supported, as defined in Table 8.
Low-speed Output Clock (T ) OUT4
The TOUT4 clock is supplied on two output ports,
TO8 and TO9. The former port will provide an AMI
signal carrying a composite clock of 64 kHz
and 8 kHz, according to ITU Recommendation
G.703. The latter port will provide a TTL/CMOS
signal at either 1.544 MHz or 2.048 MHz,
depending on the setting of the SONSDHB pin.
High-speed Output Clock (Part of T ) OUT0
The TOUT0 port has multiple outputs. Outputs TO1
and TO2 are TTL/CMOS output with a choice of
11 different frequencies up to 51.84 MHz.
Outputs TO3 to TO5 are all TTL/CMOS outputs
with fixed frequencies of 19.44 MHz,
38.88 MHz and 77.76 MHz respectively. Output
TO6 is differential and can support clocks up to
155.52 MHz. Output TO7 is also differential
and can support clocks up to 155.52 MHz.
Each output is individually configured to operate
at the frequencies shown in Table 8
(configuration must be consistent between
ACS8510 devices for protection-switching to be
effective - output clocks will be phase-aligned
Revision 2.00/September 2003 Semtech Corp.
15
www.semtech.com
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