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| 型號： | DS3170+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 225/230頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC TXRX DS3/E3 100-CSBGA |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 640 |
| 功能： | 單芯片收發(fā)器 |
| 接口： | DS3，E3 |
| 電路數(shù)： | 1 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 電流 - 電源： | 120mA |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-LBGA，CSBGA |
| 供應(yīng)商設(shè)備封裝： | 100-CSBGA（11x11） |
| 包裝： | 托盤 |
| 包括： | DS3 調(diào)幀器，E3 調(diào)幀器，HDLC 控制器，芯片內(nèi) BERT |
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DS3170 DS3/E3 Single-Chip Transceiver
94 of 230
The type of BIP-8 error(s) inserted is programmable (errored BIP-8 bit, or errored BIP-8 byte). An errored BIP-8 bit
is inverting a single bit error in the EM byte. An errored BIP-8 byte is inverting all eight bits in the EM byte. BIP-8
error(s) can be inserted one error at a time, or continuously. The BIP-8 error insertion mode (single or continuous)
is programmable.
An REI error is generated by forcing the second bit of the MA byte to a one. REI error(s) can be inserted one error
at a time, or continuously. The REI error insertion mode (single or continuous) is programmable.
Each error type (framing, BIP-8, or REI) has a separate enable. Continuous error insertion mode inserts errors at
every opportunity. Single error insertion mode inserts an error at the next opportunity when requested. The framing
multi-error insertion mode inserts the indicated number of errors at the next opportunities when requested. i.e., a
single request will cause multiple errors to be inserted. The requests can be initiated by a register bit(TSEI) or by
the manual error insertion input (TMEI). The error insertion request source (register or input) is programmable. The
insertion of each particular error type is individually enabled. Once all error insertion has been performed, the data
stream is passed on to overhead insertion.
10.6.8.4 Transmit G.832 E3 Overhead Insertion
Overhead insertion can insert any (or all) of the E3 overhead bytes into the E3 frame. The E3 overhead bytes FA1,
FA2, EM, TR, MA, NR, and GC can be sourced from the transmit overhead interface (TOHCLK, TOH, TOHEN, and
TOHSOF). The EM byte is sourced as an error mask (modulo 2 addition of the input EM byte and the generated
EM byte). The E3 overhead insertion is fully controlled by the transmit overhead interface. If the transmit overhead
data enable signal (TOHEN) is driven high, then the bit on the transmit overhead signal (TOH) is inserted into the
output data stream. Insertion of bits using the TOH signal overwrites internal overhead insertion.
10.6.8.5
Transmit G.832 E3 AIS Generation
G.832 E3 AIS generation overwrites the data stream with AIS. If transmit AIS is enabled, the data stream (payload
and E3 overhead) is forced to all ones.
10.6.8.6 Receive G.832 E3 Frame Processor
The G.832 E3 frame format is shown in Figure 10-17. FA1 and FA2 are the Frame Alignment bytes. EM is the
Error Monitoring byte used for path error monitoring. TR is the Trail Trace byte used for end-to-end connectivity
verification. MA is the Maintenance and Adaptation byte used for far-end path status and performance monitoring
(see Figure 10-18). NR is the Network Operator byte allocated for network operator maintenance purposes. GC is
the General Purpose Communications Channel byte allocated for user communications purposes.
10.6.8.7
Receive G.832 E3 Framing
G.832 E3 framing determines the G.832 E3 frame boundary. The frame boundary is found by identifying the frame
alignment bytes FA1 and FA2, which have a value of F6h and 28h respectively. The framer is an off-line framer
that updates the data path frame counters when an out of frame (OOF) condition has been detected. The use of an
off-line framer reduces the average time required to reframe, and reduces data loss caused by burst error. The
G.832 E3 framer checks each bit position for the frame alignment word (FA1 and FA2). The frame boundary is set
once the frame alignment word is identified. Since, the frame alignment word check is performed one bit at a time,
up to 4296 checks may be needed to find the frame boundary. The data path frame counters are updated if an
error free frame alignment word is received for two additional frames, and an OOF condition is present.
10.6.8.8 Receive G.832 E3 Performance Monitoring
Performance monitoring checks the E3 frame for alarm conditions and errors. The alarm conditions detected are
OOF, LOF, COFA, LOS, AIS, RUA1, and RDI. The errors accumulated are framing, parity, and Remote Error
Indication (REI) errors. An Out Of Frame (OOF) condition is declared when four consecutive frame alignment
words (FA1 and FA2) contain one or more errors, when 986 or more frames out of 1,000 frames has a BIP-8 block
error, or at the next framing word check when a manual reframe is requested. An OOF condition is terminated
when three consecutive frame alignment words (FA1 and FA2) are error free or the G.832 E3 framer updates the
data path frame counters.
A Loss Of Frame (LOF) condition is declared by the LOF integration counter when it has been active for a total of T
ms. The LOF integration counter is active (increments count) when an OOF condition is present, it is inactive (holds
count) when an OOF condition is absent, and it is reset when an OOF condition is absent for T continuous ms. T is
programmable (0, 1, 2, or 3). An LOF condition is terminated when an OOF condition is absent for T continuous
ms.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS3170_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:DS3/E3 Single-Chip Transceiver Single-Chip Transceiver for DS3 and E3 |
| DS3170+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC DS3/E3 Single-Chip Transceiver 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 |
| DS3170DK | 功能描述:網(wǎng)絡(luò)開發(fā)工具 DS3170 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| DS3170L | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:DS3/E3 Single-Chip Transceiver |
| DS3170LN | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:DS3/E3 Single-Chip Transceiver |
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