參數(shù)資料
型號： DS21Q44
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
文件頁數(shù)： 37/105頁
文件大小： 620K
代理商： DS21Q44
DS21Q44
37 of 105
CRC4 SYNC COUNTER
The CRC4 Sync Counter increments each time the 8 ms CRC4 multiframe search times out. The counter
is cleared when the framer has successfully obtained synchronization at the CRC4 level. The counter can
also be cleared by disabling the CRC4 mode (CCR1.0=0). This counter is useful for determining the
amount of time the framer has been searching for synchronization at the CRC4 level. ITU G.706 suggests
that if synchronization at the CRC4 level cannot be obtained within 400 ms, then the search should be
abandoned and proper action taken. The CRC4 Sync Counter will rollover.
SR1: STATUS REGISTER 1
(Address=06 Hex)
(MSB)
RSA1
(LSB)
RLOS
RDMA
RSA0
RSLIP
RUA1
RRA
RCL
SYMBOL
POSITION
NAME AND DESCRIPTION
RSA1
SR1.7
Receive Signaling All Ones / Signaling Change.
Set when
over a full MF, the content of timeslot 16 contains less than
three zeros. This alarm is not disabled in the CCS signaling
mode. A change in the contents of RS1 through RS16 from one
multiframe to the next will cause RSA1 and RSA0 to be set.
Receive Distant MF Alarm.
Set when bit–6 of timeslot 16 in
frame 0 has been set for two consecutive multiframes. This
alarm is not disabled in the CCS signaling mode.
Receive Signaling All Zeros / Signaling Change.
Set when
over a full MF, timeslot 16 contains all zeros. A change in the
contents of RS1 through RS16 from one multiframe to the next
will cause RSA1 and RSA0 to be set.
Receive Side Elastic Store Slip.
Set when the elastic store has
either repeated or deleted a frame of data.
Receive Unframed All Ones.
Set when an unframed all ones
code is received at RPOS and RNEG.
Receive Remote Alarm.
Set when a remote alarm is received
at RPOS and RNEG.
Receive Carrier Loss.
Set when 255 (or 2048 if CCR3.0=1)
consecutive zeros have been detected at RPOS and RNEG.
Receive Loss of Sync.
Set when the device is not synchronized
to the receive E1 stream.
RDMA
SR1.6
RSA0
SR1.5
RSLIP
SR1.4
RUA1
SR1.3
RRA
SR1.2
RCL
SR1.1
RLOS
SR1.0
相關(guān)PDF資料
PDF描述
DS21Q44T Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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
DS2251T-128-16 CONNECTOR ACCESSORY
DS2251T-32-16 128k Soft Microcontroller Module
DS2251T-64-16 CONNECTOR ACCESSORY
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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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