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參數(shù)資料
| 型號： | DS3154N |
| 英文描述： | Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs |
| 中文描述： | 單/雙/三/四DS3/E3/STS-1柳斯 |
| 文件頁數(shù)： | 28/60頁 |
| 文件大小： | 788K |
| 代理商： | DS3154N |
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DS3151/DS3152/DS3153/DS3154 Single/Dual/Triple/Quad DS3/E3/STS-1 LIUs
28 of 60
Figure 7-2. DS3 AIS Structure
M1 Subframe
X1
(1)
Bits
(1)
M2 Subframe
X2
(1)
Bits
(1)
M3 Subframe
P1
(0)
Bits
(1)
M4 Subframe
P2
(0)
Bits
(1)
M5 Subframe
M1
(0)
Bits
(1)
M6 Subframe
M2
(1)
Bits
(1)
M7 Subframe
M3
(0)
Bits
(1)
Note 1:
X1 is transmitted first.
Note 2:
The 84 info bits contain the repetitive sequence 1010…, where the first 1 in the sequence immediately follows each X, P, F, C, or M bit.
8. DIAGNOSTICS
PRBS Generator and Detector.
Each LIU has built-in pseudorandom bit sequence (PRBS) generator and detector
circuitry for physical layer testing. The device generates and detects unframed 2
15
- 1 (DS3 or STS-1) or 2
23
- 1
PRBS, according to the ITU O.151 specification. To transmit a PRBS pattern, pull the TDSA and TDSB pins high
(hardware mode) or set configuration bits TDSA and TDSB (CPU bus mode). As
Table 4-F
shows, the PRBS
generator automatically generates 2
- 1 for DS3 and STS-1 modes and 2
- 1 for E3 mode.
The PRBS detector, which is always enabled (
Table 4-G
), reports its status through the PRBS output pin (hardware
and CPU bus modes) or through the PRBS and PBER status bits (CPU bus mode). When the PRBS detector is out
of synchronization, the PRBS pin is forced high. When the detector syncs to an incoming PRBS pattern, the PRBS
pin is driven low, then pulses high, synchronous with RCLK, for each bit error detected. See
Figure 8-1
and
Figure
8-2
for details. In CPU bus mode, the PRBS status bit is set to one when the detector is out of synchronization and
set to zero when the detector syncs to an incoming PRBS pattern. A change of state of the PRBS bit can cause an
interrupt on the
INT
pin if the PRBSIE interrupt-enable bit is set to one. A pattern bit error can also cause an
interrupt if the PBERIE interrupt-enable bit is set to one. The PRBS detector also declares sync in the presence of
an incoming all-ones pattern.
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
84
Info
F1
84
Info
Bits
C1
(0)
84
Info
Bits
F2
(0)
84
Info
Bits
C2
(0)
84
Info
Bits
F3
(0)
84
Info
Bits
C3
(0)
84
Info
Bits
F4
(1)
84
Info
Bits
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| DS3154DK | Quad DS3/E3/STS-1 LIU Demo Kit |
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| DS32kHz-N | 32.768kHz Temperature-Compensated Crystal Oscillator |
| DS3800 | Advanced NV SRAM Battery Cap |
| DS3832C-311 | 3.3V, 32Mb Advanced NV SRAM with Clock |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS3154N# | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS3154N+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS3154NA2 | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS3154NB1 | 制造商:Maxim Integrated Products 功能描述:DS3154B QUAD DS3/E3 LIU IND - Rail/Tube 制造商:Maxim Integrated Products 功能描述:DS3/E3/STS-1 LIUS |
| DS3154NCA2 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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