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參數(shù)資料
| 型號(hào)： | DS21FT42 |
| 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)： | 48/145頁(yè) |
| 文件大?。?/td> | 466K |
| 代理商： | DS21FT42 |
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DALLAS SEMICONDUCTOR
DS21FF42/DS21FT42
101899
/1238
RIR1: RECEIVE INFORMATION REGISTER 1
(Address=22 Hex)
(MSB)
COFA
(LSB)
FBE
8ZD
16ZD
RESF
RESE
SEFE
B8ZS
SYMBOL
POSITION
NAME AND DESCRIPTION
COFA
RIR1.7
Change of Frame Alignment.
Set when the last resync resulted in a
change of frame or multiframe alignment.
Eight Zero Detect.
Set when a string of at least eight consecutive
zeros (regardless of the length of the string) have been received at
RPOS and RNEG.
Sixteen Zero Detect.
Set when a string of at least sixteen consecutive
zeros (regardless of the length of the string) have been received at
RPOS and RNEG.
Receive Elastic Store Full.
Set when the receive elastic store buffer
fills and a frame is deleted.
Receive Elastic Store Empty.
Set when the receive elastic store
buffer empties and a frame is repeated.
Severely Errored Framing Event.
Set when 2 out of 6 framing bits
(Ft or FPS) are received in error.
B8ZS Code Word Detect.
Set when a B8ZS code word is detected at
RPOS and RNEG independent of whether the B8ZS mode is selected
or not via CCR2.6. Useful for automatically setting the line coding.
Frame Bit Error.
Set when a Ft (D4) or FPS (ESF) framing bit is
received in error.
8ZD
RIR1.6
16ZD
RIR1.5
RESF
RIR1.4
RESE
RIR1.3
SEFE
RIR1.2
B8ZS
RIR1.1
FBE
RIR1.0
RIR2: RECEIVE INFORMATION REGISTER 2
(Address=31 Hex)
(MSB)
RLOSC
(LSB)
TPDV
RCLC
TESF
TESE
TSLIP
RBLC
RPDV
SYMBOL
POSITION
NAME AND DESCRIPTION
RLOSC
RIR2.7
Receive Loss of Sync Clear.
Set when the framer achieves
synchronization; will remain set until read.
Receive Carrier Loss Clear.
Set when the carrier signal is restored;
will remain set until read. See Table 11-1.
Transmit Elastic Store Full.
Set when the transmit elastic store buffer
fills and a frame is deleted.
Transmit Elastic Store Empty.
Set when the transmit elastic store
buffer empties and a frame is repeated.
Transmit Elastic Store Slip Occurrence.
Set when the transmit
elastic store has either repeated or deleted a frame.
Receive Blue Alarm Clear.
Set when the Blue Alarm (AIS) is no
longer detected; will remain set until read. See Table 11-1.
RCLC
RIR2.6
TESF
RIR2.5
TESE
RIR2.4
TSLIP
RIR2.3
RBLC
RIR2.2
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相關(guān)代理商/技術(shù)參數(shù) |
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| DS21FT42N | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl T1/T1 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 |
| DS21FT44 | 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 |
| DS21FT44+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4X3 E1 Framer E1 Framer 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 |
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| DS21FT44N+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/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 |
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