- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11562 > DS21FT42N (Maxim Integrated Products)IC FRAMER T1 4X3 12CH IND 300BGA PDF資料下載
參數(shù)資料
| 型號： | DS21FT42N |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 89/114頁 |
| 文件大小： | 0K |
| 描述： | IC FRAMER T1 4X3 12CH IND 300BGA |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 40 |
| 控制器類型： | T1 調(diào)幀器 |
| 接口： | 并行/串行 |
| 電源電壓： | 2.97 V ~ 3.63 V |
| 電流 - 電源： | 225mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 300-BBGA |
| 供應(yīng)商設(shè)備封裝： | 300-PBGA（27x27） |
| 包裝： | 管件 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁當前第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁
DS21FT42/DS21FF42
76 of 114
will automatically look for 5 ones in a row, followed by a zero. If it finds such a pattern, it will
automatically remove the zero. If the zero destuffer sees six or more ones in a row followed by a zero,
the zero is not removed. The CCR2.0 bit should always be set to a one when the DS21Q42 is extracting
the FDL. More on how to use the DS21Q42 in FDL applications in this legacy support mode is covered
in a separate Application Note.
RFDL: RECEIVE FDL REGISTER (Address = 28 Hex)
(MSB)
(LSB)
RFDL7
RFDL6
RFDL5
RFDL4
RFDL3
RFDL2
RFDL1
RFDL0
SYMBOL
POSITION
NAME AND DESCRIPTION
RFDL7
RFDL.7
MSB of the Received FDL Code
RFDL0
RFDL.0
LSB of the Received FDL Code
The Receive FDL Register (RFDL) reports the incoming Facility Data Link (FDL) or the incoming Fs
bits. The LSB is received first.
RMTCH1: RECEIVE FDL MATCH REGISTER 1 (Address = 29 Hex)
RMTCH2: RECEIVE FDL MATCH REGISTER 2 (Address = 2A Hex)
(MSB)
(LSB)
RMFDL7
RMFDL6
RMFDL5
RMFDL4
RMFDL3
RMFDL2
RMFDL1
RMFDL0
SYMBOL
POSITION
NAME AND DESCRIPTION
RMFDL7
RMTCH1.7
RMTCH2.7
MSB of the FDL Match Code
RMFDL0
RMTCH1.0
RMTCH2.0
LSB of the FDL Match Code
When the byte in the Receive FDL Register matches either of the two Receive FDL Match Registers
(RMTCH1/RMTCH2), SR2.2 will be set to a one and the INT* will go active if enabled via IMR2.2.
19.2.3 Transmit Section
The transmit section will shift out into the T1 data stream, either the FDL (in the ESF framing mode) or
the Fs bits (in the D4 framing mode) contained in the Transmit FDL register (TFDL). When a new value
is written to the TFDL, it will be multiplexed serially (LSB first) into the proper position in the outgoing
T1 data stream. After the full 8 bits has been shifted out, the framer will signal the host microcontroller
that the buffer is empty and that more data is needed by setting the SR2.3 bit to a one. The INT* will
also toggle low if enabled via IMR2.3. The user has 2 ms to update the TFDL with a new value. If the
TFDL is not updated, the old value in the TFDL will be transmitted once again. The framer also contains
a zero stuffer, which is controlled via the CCR2.4 bit.
In both ANSI T1.403 and TR54016,
communications on the FDL follows a subset of a LAPD protocol. The LAPD protocol states that no
more than 5 ones should be transmitted in a row so that the data does not resemble an opening or closing
flag (01111110) or an abort signal (11111111). If enabled via CCR2.4, the framer will automatically
look for 5 ones in a row. If it finds such a pattern, it will automatically insert a zero after the five ones.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-24R-IX-S | CONVERTER MOD DC/DC 7.5V 75W |
| CONREVMCX003.062-L | CONN RPMCX FEM EDGE MT 0.062"EXT |
| PIC18F23K20-E/SP | IC PIC MCU FLASH 4KX16 28-DIP |
| CONREVSMA006.031 | CONN RPSMA FML EDGE MULTI 0.031" |
| PIC18F25K20T-I/ML | IC PIC MCU FLASH 16KX16 28QFN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| 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 |
| 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 |
| DS21Q348 | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。