参数资料
型号: AK2500B
元件分类: 数字传输电路
英文描述: RECEIVER, PDSO24
封装: SOP-24
文件页数: 13/17页
文件大小: 78K
代理商: AK2500B
ASAHI KASEI
[AK2500B]
MS0005-E-00
- 5 -
1999/12
FUNCTIONAL DESCRIPTION
The AK2500B provides the basic receiver functions of a high-speed line card as shown in Fig.7.
The receiver extracts data and clock from a B3ZS coded signal and outputs clock and synchronized data.
Signal Requirements
Pulse characteristics are specified at the DSX-3.
Table 1. DS3 Interface Specification
Parameter
Specification
Line Rate
44.736Mbps±20ppm
Line Code
B3ZS
Test Load
75
±5%
Standards
GR-499-CORE ,
ANSI T1-102 , T1.404
Table 2. STS-1 Interface Specification
Parameter
Specification
Line Rate
51.840Mbps±20ppm
Line Code
B3ZS
Test Load
75
±5%
Standards
GR-253-CORE ,
ANSI T1-102
Equalization
The incoming data may have the loss of cable and/or flat. Cable type and length from the cross-connect are
specified as shown in Table 3. Equalizer compensates appropriately for a nominal DSX-3/STS-1 pulse as
attenuated by 0 - 450 feet of 728A cable.
Table 3. DS3/STS-1 Cable Specification
Parameter
Specification
Cable Type
Type 728A coaxial cable (or equivalent)
Cable Length
0 – 450 feet (from DSX-3 point)
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