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参数资料
| 型号： | ACS8509 |
| 元件分类： | 数字传输电路 |
| 英文描述： | ATM/SONET/SDH SUPPORT CIRCUIT, PQFP100 |
| 封装： | LQFP-100 |
| 文件页数： | 4/68页 |
| 文件大小： | 703K |
| 代理商： | ACS8509 |
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ADVANCED COMMUNICATIONS
FINAL
DATASHEET
Revision 2.00/January 2006 Semtech Corp.
Page 12
www.semtech.com
ACS8509 SETS
Figure 3 Minimum Input Jitter Tolerance (OC-3/STM-1)
Frame Sync and Multi-Frame Sync Clocks (Part of
TOUT0)
Frame Sync (8 kHz) and Multi-Frame Sync (2 kHz) clocks
are provided on outputs “FrSync” and “MFrSync”. The
FrSync and MFrSync clocks have a 50:50 mark space
ratio. These are driven from the TOUT0 clock. They are
synchronized with their counterparts in a second
ACS8509 device (if used), using the technique described
later.
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, TOUT0 and TOUT4, are independent of each other
and are individually selectable. The two secondary output
clocks, Frame Sync and Multi-Frame Sync, are derived
from TOUT0. The frequencies of the output clocks are
selectable from a range of pre-defined spot frequencies
and a variety of output technologies are supported, as
defined in Table 10.
Low-speed Output Clock (TOUT4)
The TOUT4 clock is supplied on output port O4. This 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 TOUT0)
The TOUT0 port has multiple outputs. Output O1 is
differential and can support clocks up to 155.52 MHz.
Output O2 is a TTL/CMOS output with a choice of 11
different frequencies up to 51.84 MHz. Output O3 is a
TTL/CMOS output with fixed frequency of 19.44 MHz.
Each output is individually configured to operate at the
frequencies shown in Table 10 (configuration must be
consistent between ACS8509 devices for protection-
switching to be effective - output clocks will be phase-
aligned between devices). Using the
cnfg_differential_outputs register, output O1 can be
made to be LVDS or PECL compatible.
f0
f1
f2
f3
f4
f5
f6
f7
f8
f9
A0
A1
A2
A3
A4
Jitter and Wander Frequency (log scale)
F8530_003MINIPJITTOLOC3STM1_02
Note...For inputs supporting G.783[9] compliant sources.)
Table 8 Amplitude and Frequency Values for Jitter Tolerance (OC-3/STM-1)
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 12 u 178 u 1.6 m 15.6 m 0.125
19.3
500 6.5 k 65 k 1.3m
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ACS8509T | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Synchronous Equipment Timing Source for SONET or SDH Network Elements |
| ACS8510 | 制造商:Semtech Corporation 功能描述:Timing Source 100-Pin LQFP |
| ACS8510_03 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Synchronous Equipment Timing Source for SONET or SDH Network Elements |
| ACS8510REV2.1 | 制造商:Semtech Corporation 功能描述:Timing Source 100-Pin LQFP |
| ACS8510REV2.1SETS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Synchronous Equipment Timing Source for SONET or SDH Network Elements |
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