參數(shù)資料
型號(hào)： DS21448G+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 18/60頁(yè)
文件大?。?/td> 0K
描述： IC LIU E1/T1/J1 QUAD 144-PBGA
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 90
類(lèi)型： 線路接口裝置（LIU）
驅(qū)動(dòng)器/接收器數(shù)： 4/4
規(guī)程： T1/E1/J1
電源電壓： 3.135 V ~ 3.465 V
安裝類(lèi)型： 表面貼裝
封裝/外殼： 144-BGA
供應(yīng)商設(shè)備封裝： 144-TEPBGA（17x17）
包裝： 管件
其它名稱(chēng)： 90-21448+G00
DS21448 3.3V T1/E1/J1 Quad Line Interface
25 of 60
Table 5-A. Received Alarm Criteria
ALARM
E1/T1
SET CRITERIA
CLEAR CRITERIA
RUA1
E1
Fewer than two 0s in two frames (512 bits)
More than two 0s in two frames (512 bits)
RUA1
T1
Over a 3ms window, five or fewer 0s are
received.
Over a 3ms window, six or more 0s are
received.
RCL
(Note 1)
E1
255 (or 2048) consecutive 0s received
(G.775) (Note 2)
In 255-bit times, at least 32 1s are
received.
RCL
(Note 1)
T1
192 (or 1544) consecutive 0s are received
(Note 2)
14 or more 1s out of 112 possible bit
positions are received, starting with the
first 1 received.
Note 1: RCL is also known as a loss of signal (LOS) or Red Alarm in T1.
Note 2: See CCR1.5 for details.
IMR (07H): Interrupt Mask Register
(MSB)
(LSB)
LUP
LDN
LOTC
RUA1
RCL
TCLE
TOCD
PRBSD
NAME
POSITION
FUNCTION
LUP
IMR.7
Loop-Up Code Detected
0 = interrupt masked
1 = interrupt enabled
LDN
IMR.6
Loop-Down Code Detected
0 = interrupt masked
1 = interrupt enabled
LOTC
IMR.5
Loss-of-Transmit Clock
0 = interrupt masked
1 = interrupt enabled
RUA1
IMR.4
Receive Unframed All Ones
0 = interrupt masked
1 = interrupt enabled
RCL
IMR.3
Receive Carrier Loss
0 = interrupt masked
1 = interrupt enabled
TCLE
IMR.2
Transmit Current-Limiter Exceeded
0 = interrupt masked
1 = interrupt enabled
TOCD
IMR.1
Transmit Open-Circuit Detect
0 = interrupt masked
1 = interrupt enabled
PRBSD
IMR.0
PRBS Detection
0 = interrupt masked
1 = interrupt enabled
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參數(shù)描述
DS21448G+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Quad 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
DS21448GN+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Quad 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
DS21448L 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Quad 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
DS21448L+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Quad 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
DS21448L+W 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Quad 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
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