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參數(shù)資料
| 型號： | XRT75R03D |
| 廠商： | Exar Corporation |
| 英文描述： | THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER |
| 中文描述： | Three頻道E3/DS3/STS-1線路接口單元與SONET DESYNCRONIZER |
| 文件頁數(shù)： | 93/134頁 |
| 文件大?。?/td> | 803K |
| 代理商： | XRT75R03D |
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XRT75R03D
REV. 1.0.2
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
88
9.3
Transmit All Ones (TAOS) can be set either in Hardware mode by pulling the TAOS_n pins “High” or in Host
mode by setting the TAOS_n control bits to “1” in the Channel control registers. When the TAOS is set, the
Transmit Section generates and transmits a continuous AMI all “1’s” pattern on TTIP_n and TRING_n pins. The
frequency of this “1’s” pattern is determined by TClk_n.TAOS data path is shown in Figure 29. TAOS does not
operate in Analog loopback or Remote Digital loopback mode. It will function in Digital loopback mode.
TRANSMIT ALL ONES (TAOS):
10.0 THE SONET/SDH DE-SYNC FUNCTION WITHIN THE XRT75R03D
The XRT75R03D LIU IC is very similar to the XRT75R03 in that they are both 3-Channel DS3/E3/STS-1 LIU
devices that also contain Jitter Attenuator blocks within each of the three channels. They are also pin to pin
compatible with each other. However, the Jitter Attenuators within the XRT75R03D has some enhancements
over and above those within the XRT75R03 (non-D) device. The Jitter Attenuator blocks within the
XRT75R03D will support all of the modes and features that exist in the XRT75R03 (non-D) device and in
addition they also support a SONET/SDH De-Sync Mode not available within the XRT75R03.
N
OTE
:
The "D" suffix within the part number, XRT75R03D stands for "De-Sync".
The SONET/SDH De-Sync feature of the Jitter Attenuator blocks in the XRT75R03D permits the user to design
a SONET/SDH PTE (Path Terminating Equipment) that will comply with all of the following Intrinsic Jitter and
Wander requirements.
For SONET Applications
I
Category I Intrinsic Jitter Requirements per Telcordia GR-253-CORE (for DS3 Applications)
I
ANSI T1.105.03b-1997 - SONET Jitter at Network Interfaces - DS3 Wander Supplement
For SDH Applications
I
Jitter and Wander Generation Requirements per ITU-T G.783 (for DS3 and E3 Applications)
Specifically, if the user designs in the XRT75R03D along with a SONET/SDH Mapper IC (which can be
realized as either a standard product or as a custom logic solution, in an ASIC or FPGA), then the followind can
be accomplished;
The Mapper can receive an STS-N or an STM-M signal (which is carrying asynchronously-mapped DS3 and/
or E3 signals) and byte de-interleave this data into N STS-1 or 3*M VC-3 signals
F
IGURE
30. T
RANSMIT
A
LL
O
NES
(TAOS)
TRING
TTIP
RRING
RTIP
RPOS
RNEG
RCLK
TNDATA
TCLK
TPDATA
HDB3/B3ZS
ENCODER
HDB3/B3ZS
DECODER
J
A
J
A
TIMING
CONTROL
DATA &
CLOCK
RECOVERY
1
if enabled
2
if enabled and selected in either Receive or
Transmit path
Tx
Rx
TAOS
Transmit All 1
1
1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| XRT75R03DIV | THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER |
| XRT75R03 | THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75R03IV | THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH JITTER ATTENUATOR |
| XRT75R06D | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
| XRT75R06DIB | SIX CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT75R03D_06 | 制造商:EXAR 制造商全稱:EXAR 功能描述:EXAR DATA SHEET FORMAT TEMPLATES |
| XRT75R03DES | 功能描述:時鐘合成器/抖動清除器 3CH T3/E3/STS1LIU+D 3.3V W/REDUNDANCY RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| XRT75R03DIV | 功能描述:時鐘合成器/抖動清除器 3CHNNEL E3/DS3/STS 1 JITTER ATTENUATOR RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| XRT75R03DIV-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3-Ch E3/DS3/STS-1 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 |
| XRT75R03DIVTR | 功能描述:時鐘合成器/抖動清除器 3CHNNEL E3/DS3/STS 1 JITTER ATTENUATOR RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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