參數(shù)資料
型號(hào)： DS21Q44T
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁(yè)數(shù)： 42/105頁(yè)
文件大小： 620K
代理商： DS21Q44T
DS21Q44
42 of 105
EBCR1: E–BIT COUNT REGISTER 1
(Address=04 Hex)
EBCR2: E–BIT COUNT REGISTER 2
(Address=05 Hex)
(MSB)
(note 1)
EB7
(LSB)
EB8
EB0
(note 1)
EB6
(note 1)
EB5
(note 1)
EB4
(note 1)
EB3
(note 1)
EB2
EB9
EB1
EBCR1
EBCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
EB9
EB0
EBCR1.1
EBCR2.0
MSB of the 10–Bit E–Bit Error Count
LSB of the 10–Bit E–Bit Error Count
Note:
The upper six bits of EBCR1 at address 04 are the least significant bits of the 12–bit FAS error counter.
FAS Error Counter
FAS Count Register 1 (FASCR1) is the most significant word and FASCR2 is the least significant word
of a 12–bit counter that records word errors in the Frame Alignment Signal in timeslot 0. This counter is
disabled when RLOS is high. FAS errors will not be counted when the framer is searching for FAS
alignment and/or synchronization at either the CAS or CRC4 multiframe level. Since the maximum FAS
word error count in a one second period is 4000, this counter cannot saturate.
FASCR1: FAS ERROR COUNT REGISTER 1
(Address=02 Hex)
FASCR2: FAS ERROR COUNT REGISTER 2
(Address=04 Hex)
(MSB)
FAS11
FAS5
(LSB)
(note 2)
(note 1)
FAS10
FAS4
FAS9
FAS3
FAS8
FAS2
FAS7
FAS1
FAS6
FAS0
(note 2)
(note 1)
FASCR1
FASCR2
SYMBOL
POSITION
NAME AND DESCRIPTION
FAS11
FAS0
FASCR1.7
FASCR2.2
MSB of the 12–Bit FAS Error Count
LSB of the 12–Bit FAS Error Count
Notes:
1.
The lower two bits of FASCR1 at address 02 are the most significant bits of the 10–bit CRC4 error
counter.
2.
The lower two bits of FASCR2 at address 04 are the most significant bits of the 10–bit E–Bit counter.
相關(guān)PDF資料
PDF描述
DS21Q44TN MICROSWITCH, SPDT, SIM ROLLER LEVER; Current, contact AC:5A; Force, operating:91.75gf; Travel, pre:16.0mm; Centres, fixing LxW:22.2mm; Temp, op. max:120(degree C); Temp, op. min:-40(degree C); Length / Height, external:9.25mm; Width, RoHS Compliant: Yes
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21Q44T+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Enhanced Quad E1 Framer 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
DS21Q44TN 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
DS21Q48 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V Quad 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
DS21Q48A3N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 5V Quad 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
DS21Q48B 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
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