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參數資料
| 型號： | DS26324GN+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 42/120頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU E1/T1/J1 3.3V 256-CSBGA |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 500 |
| 類型： | 線路接口裝置（LIU） |
| 驅動器/接收器數： | 16/16 |
| 規(guī)程： | LIN |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 256-LBGA，CSBGA |
| 供應商設備封裝： | 256-CSBGA（17x17） |
| 包裝： | 帶卷 (TR) |
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DS26324 3.3V, 16-Channel, E1/T1/J1 Short-Haul Line Interface Unit
28 of 120
5.5.3
Peak Detector and Slicer
The slicer determines the polarity and presence of the received data. The output of the slicer is sent to the clock
and data recovery circuitry for extraction of data and clock. The slicer has a built-in peak detector for determination
of the slicing threshold.
5.5.4
Receive Level Indicator
The DS26324 will report the signal strength at RTIP and RRING in increments described in Table 6-17. via register
bits CnRL3–CnRL0 located in the RSL1–4 registers.
5.5.5
Clock and Data Recovery
The resultant E1 or T1 clock derived from the 2.048/1.544 PLL is internally multiplied by 16 via another internal PLL
and fed to the clock recovery system. The clock recovery system uses the clock from the PLL circuit to form a 16
times oversampler, which is used to recover the clock and data. This oversampling technique offers outstanding
performance to meet jitter tolerance specifications.
5.5.6
Loss of Signal
The DS26324 uses both the digital and analog loss-detection method in compliance with the latest ANSI T1.231 for
T1/J1 and ITU-T G.775 or ETS 300 233 for E1 mode of operation.
LOS is detected if the receiver level falls bellow a threshold analog voltage for certain duration. Alternatively, this
can be termed as having received “zeros” for certain duration. The signal level and timing duration are defined in
accordance with the ANSI T1.231, ITU-T G.775, or ETS 300 233 specifications.
The loss detection thresholds are based on cable loss of 18dB for both T1 and E1 modes.
RCLK is replaced by MCLK when the receiver detects a loss of signal. If the AISEL bit is set in the GC register or
the IAISEL bit is set, the RPOS/RNEG data is replaced by AIS. The loss state is exited when the receiver detects a
certain number of ones density at a higher signal level than the loss detection level. The loss detection signal level
and loss reset signal level are defined with a hysteresis to prevent the receiver from bouncing between “LOS” and
“no LOS” states.
Table 5-6 outlines the specifications governing the loss function.
Table 5-6. Loss Criteria ANSI T1.231, ITU-T G.775, and ETS 300 233 Specifications
CRITERIA
STANDARD
T1.231
ITU-T G.775
ETS 300 233
Loss
Detection
Criteria
No pulses are detected for 175
±75 bits.
No pulses are detected for
duration of 10 to 255 bit
periods.
No pulses are detected for a
duration of 2048 bit periods or
1ms.
Loss Reset
Criteria
Loss is terminated if a duration
of 12.5% ones are detected over
duration of 175 ±75 bits.
Loss is not terminated if 8
consecutive zeros are found if
B8ZS encoding is used. If B8ZS
is not used loss is not
terminated if 100 consecutive
pulses are zero.
The incoming signal has
transitions for duration of 10 to
255 bit periods.
Loss reset criteria is not
defined.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS26324N | 制造商:Maxim Integrated Products 功能描述:DS26324 X16 T1E1J1 LIU S-HAUL IND - Rail/Tube |
| DS26324-W | 功能描述:電信集成電路 RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| DS26334 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3.3V, 16-Channel, E1/T1/J1 Shortand Long-Haul Line Interface Unit |
| DS26334_07 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3.3V, 16-Channel, E1/T1/J1 Shortand Long-Haul Line Interface Unit |
| DS26334DK | 功能描述:網絡開發(fā)工具 DS26334 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
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