參數(shù)資料
型號(hào)： DS21FF42
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PBGA300
封裝： 27 X 27 MM, BGA-300
文件頁(yè)數(shù)： 79/115頁(yè)
文件大?。?/td> 534K
代理商： DS21FF42
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DS21FF42/DS21FT42
66 of 115
HDLC/BOC CONTROLLER REGISTER LIST Table 19-1
NAME
FUNCTION
HDLC Control Register (HCR)
general control over the HDLC and BOC
controllers
HDLC Status Register (HSR)
key status information for both transmit and
receive directions
HDLC Interrupt Mask Register (HIMR)
allows/stops status bits to/from causing an
interrupt
Receive HDLC Information Register (RHIR)
status information on receive HDLC controller
Receive BOC Register (RBOC)
status information on receive BOC controller
Receive HDLC FIFO Register (RHFR)
access to 64–byte HDLC FIFO in receive
direction
Receive HDLC DS0 Control Register 1 (RDC1)
Receive HDLC DS0 Control Register 2 (RDC2)
controls the HDLC function when used on DS0
channels
Transmit HDLC Information Register (THIR)
status information on transmit HDLC controller
Transmit BOC Register (TBOC)
enables/disables transmission of BOC codes
Transmit HDLC FIFO Register (THFR)
access to 64–byte HDLC FIFO in transmit
direction
Transmit HDLC DS0 Control Register 1 (TDC1)
Transmit HDLC DS0 Control Register 2 (TDC2)
controls the HDLC function when used on DS0
channels
19.1.2 Status Register for the HDLC
Four of the HDLC/BOC controller registers (HSR, RHIR, RBOC, and THIR) provide status information.
When a particular event has occurred (or is occurring), the appropriate bit in one of these four registers
will be set to a one. Some of the bits in these four HDLC status registers are latched and some are real
time bits that are not latched. Section 19.1.4 contains register descriptions that list which bits are latched
and which are not. With the latched bits, when an event occurs and a bit is set to a one, it will remain set
until the user reads that bit. The bit will be cleared when it is read and it will not be set again until the
event has occurred again. The real time bits report the current instantaneous conditions that are occurring
and the history of these bits is not latched.
相關(guān)PDF資料
PDF描述
DS21FF42N DATACOM, FRAMER, PBGA300
DS21FT44N DATACOM, FRAMER, PBGA300
DS21FT44 DATACOM, FRAMER, PBGA300
DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q354 DATACOM, PCM TRANSCEIVER, PBGA256
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21FF42+ 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
DS21FF42N 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
DS21FF42N+ 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
DS21FF44 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
DS21FF44N 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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