參數(shù)資料
型號: DS32512DK
廠商: Maxim Integrated Products
文件頁數(shù): 52/130頁
文件大小: 0K
描述: KIT DEMO FOR DS32512
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
設計資源: DS32512 Gerber Files
標準包裝: 1
主要目的: 電信,線路接口單元(LIU)
已用 IC / 零件: DS32512
DS32506/DS32508/DS32512
28 of 130
Figure 8-2. STS-1 Waveform Template
-0.5
Nor
m
aliz
ed
A
m
plit
ude
Time (UI)
0
0.5
1.0
1.5
-0.75
-0.25
0.25
0.75
1.25
-0.2
0
0.2
-1.0
0.4
0.6
0.8
1.0
1.2
2nd Rise
1st Rise
1st Fall
2nd Fall
Table 8-4. STS-1 Waveform Equations
TIME (IN UNIT INTERVALS)
NORMALIZED AMPLITUDE EQUATIONS
UPPER CURVE
-0.85
≤ T ≤ -0.68
0.03
-0.68
≤ T ≤ +0.26
0.5 {1 + sin[(
π / 2)(1 + T / 0.34)]} + 0.03
0.26
≤ T ≤ 1.4
0.1 + 0.61e
-2.4(T - 0.26)
LOWER CURVE
-0.85
≤ T ≤ -0.36
-0.03
-0.36
≤ T ≤ +0.36
0.5 {1 + sin[(
π / 2)(1 + T / 0.18)]} - 0.03
0.36
≤ T ≤ 1.4
-0.03
Table 8-5. STS-1 Waveform Test Parameters and Limits
PARAMETER
SPECIFICATION
Rate
51.840Mbps (
±20ppm)
Line Code
B3ZS
Transmission Medium
Coaxial cable (AT&T 734A or equivalent)
Test Measurement Point
At the end of 0 to 450ft of coaxial cable
Test Termination
75
Ω (±1%) resistive
Pulse Amplitude
0.800V nominal (not covered in specs)
Pulse Shape
An isolated pulse (preceded by two zeros and followed by one
zero) falls within the curved listed in Table 8-4.
Unframed All-Ones Power Level at 25.92MHz
Between -1.8dBm and +5.7dBm
Unframed All-Ones Power Level at 51.84MHz
At least 20dB less than the power at 25.92MHz
DS325xx waveshape segments.
See the LIU.TWSCR register
descriptions.
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