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參數(shù)資料
| 型號(hào)： | DS21348TN |
| 英文描述： | 3.3V E1/T1/J1 Line Interface |
| 中文描述： | 3.3 E1/T1/J1線路接口 |
| 文件頁(yè)數(shù)： | 35/73頁(yè) |
| 文件大小： | 551K |
| 代理商： | DS21348TN |
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DS21348/Q348
35 of 73
RECEIVED ALARM CRITERIA
Table 7-1
ALARM
E1/T1
RUA1
E1
SET CRITERIA
Less than 2 zeros in two frames
(512 bits)
Over a 3ms window, five or
fewer zeros are received
255 (or 2048)
2
consecutive zeros
received (G.775)
192 (or 1544)
2
consecutive zeros
are received
CLEAR CRITERIA
More than 2 zeros in two frames
(512 bits)
Over a 3ms window, six or more
zeros are received
In 255 bit times, at least 32 ones
are received
14 or more ones out of 112
possible bit positions are
received starting with the first
one received
RUA1
T1
RCL
1
E1
RCL
1
T1
NOTES:
1)
Receive carrier loss (RCL) is also known as loss of signal (LOS) or Red Alarm in T1.
2)
See CCR1.5 for details.
SR (06H): STATUS REGISTER
(MSB)
LUP
LDN
(LSB)
PRBSD
LOTC
RUA1
RCL
TCLE
TOCD
SYMBOL
POSITION
DESCRIPTION
LUP
(latched)
SR.7
Loop Up Code Detected.
Set when the loop up code defined in
registers RUPCD1 and RUPCD2 is being received. See Section
6 for details.
Loop Down Code Detected.
Set when the loop down code
defined in registers RDNCD1 and RDNCD2 is being received.
See Section 6 for details.
Loss of Transmit Clock.
Set when the TCLK pin has not
transitioned for 5 sec ( 2 sec). Will force the LOTC pin high.
Receive Unframed All Ones.
Set when an unframed all ones
code is received at RRING and RTIP. See Table 7-1for details.
Receive Carrier Loss.
Set when a receive carrier loss condition
exists at RRING and RTIP. See Table 7-1for details.
Transmit Current Limit Exceeded.
Set when the 50 mA (rms)
current limiter is activated whether the current limiter is enabled
or not.
Transmit Open Circuit Detect.
Set when the device detects
that the TTIP and TRING outputs are open circuited.
PRBS Detect.
Set when the receive-side detects a 2
15
- 1 (E1)
or a 2
20
- 1 (T1) Pseudo Random Bit Sequence (PRBS).
LDN
(latched)
SR.6
LOTC
(real time)
RUA1
(latched)
RCL
(latched)
TCLE
(real time)
SR.5
SR.4
SR.3
SR.2
TOCD
(real time)
PRBSD
(real time)
SR.1
SR.0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS21348TN+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface 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 |
| DS21348TNB | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 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 |
| DS21348T-W | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 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 |
| DS21349 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:3.3V T1/J1 Line Interface Unit |
| DS21349DK | 功能描述:網(wǎng)絡(luò)開(kāi)發(fā)工具 DS21349 Design Kit RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類(lèi)型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類(lèi)型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
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