參數資料
型號： DS21Q42T
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PQFP128
封裝： TQFP-128
文件頁數： 58/119頁
文件大?。?/td> 1309K
代理商： DS21Q42T
DS21Q42
43 of 119
SR2: STATUS REGISTER 2 (Address=21 Hex)
(MSB)
(LSB)
RMF
TMF
SEC
RFDL
TFDL
RMTCH
RAF
RSC
SYMBOL
POSITION
NAME AND DESCRIPTION
RMF
SR2.7
Receive Multiframe. Set on receive multiframe boundaries.
TMF
SR2.6
Transmit Multiframe. Set on transmit multiframe boundaries.
SEC
SR2.5
One Second Timer. Set on increments of one second based on
RCLK; will be set in increments of 999 ms, 999 ms, and 1002
ms every 3 seconds.
RFDL
SR2.4
Receive FDL Buffer Full. Set when the receive FDL buffer
(RFDL) fills to capacity (8 bits).
TFDL
SR2.3
Transmit FDL Buffer Empty. Set when the transmit FDL
buffer (TFDL) empties.
RMTCH
SR2.2
Receive FDL Match Occurrence. Set when the RFDL
matches either RMTCH1 or RMTCH2.
RAF
SR2.1
Receive FDL Abort. Set when eight consecutive one’s are
received in the FDL.
RSC
SR2.0
Receive Signaling Change. Set when the DS21Q42 detects a
change of state in any of the robbed–bit signaling bits.
IMR1: INTERRUPT MASK REGISTER 1 (Address=7F Hex)
(MSB)
(LSB)
LUP
LDN
LOTC
SLIP
RBL
RYEL
RCL
RLOS
SYMBOL
POSITION
NAME AND DESCRIPTION
LUP
IMR1.7
Loop Up Code Detected.
0 = interrupt masked
1 = interrupt enabled
LDN
IMR1.6
Loop Down Code Detected.
0 = interrupt masked
1 = interrupt enabled
LOTC
IMR1.5
Loss of Transmit Clock.
0 = interrupt masked
1 = interrupt enabled
SLIP
IMR1.4
Elastic Store Slip Occurrence.
0 = interrupt masked
1 = interrupt enabled
RBL
IMR1.3
Receive Blue Alarm.
0 = interrupt masked
1 = interrupt enabled
RYE
IMR1.2
Receive Yellow Alarm.
0 = interrupt masked
1 = interrupt enabled
相關PDF資料
PDF描述
DS21Q43AT DATACOM, FRAMER, PQFP128
DS21Q44T DATACOM, FRAMER, PQFP128
DS21Q44TN DATACOM, FRAMER, PQFP128
DS21Q48N DATACOM, PCM TRANSCEIVER, PBGA144
DS21Q48 DATACOM, PCM TRANSCEIVER, PBGA144
相關代理商/技術參數
參數描述
DS21Q42T+ 功能描述:網絡控制器與處理器 IC Enhanced Quad T1 Framer RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS21Q42TN 功能描述:網絡控制器與處理器 IC Enhanced Quad T1 Framer RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS21Q43A 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Quad E1 Framer
DS21Q43AT 功能描述:網絡控制器與處理器 IC Quad E1 Framer RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS21Q43AT+ 功能描述:網絡控制器與處理器 IC Quad E1 Framer RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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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