參數(shù)資料
型號(hào)： DS21FT40
廠商： DALLAS SEMICONDUCTOR
元件分類： Digital Transmission Controller
英文描述： DATACOM, FRAMER, PBGA300
封裝： BGA-300
文件頁數(shù)： 61/87頁
文件大?。?/td> 386K
代理商： DS21FT40
DS21FT40
64 of 87
SYMBOLS
POSITION
NAME AND DESCRIPTION
TD4
TDC1.4
DS0 Channel Select Bit 4. MSB of the DS0 channel select.
TD3
TDC1.3
DS0 Channel Select Bit 3.
TD2
TDC1.2
DS0 Channel Select Bit 2.
TD1
TDC1.1
DS0 Channel Select Bit 1.
TD0
TDC1.0
DS0 Channel Select Bit 0. LSB of the DS0 channel select.
TDC2: TRANSMIT HDLC DS0 CONTROL REGISTER 2 (Address = BB Hex)
(MSB)
(LSB)
TDB8
TDB7
TDB6
TDB5
TDB4
TDB3
TDB2
TDB1
SYMBOLS
POSITION
NAME AND DESCRIPTION
TDB8
TDC2.7
DS0 Bit 8 Suppress Enable. MSB of the DS0. Set to one to
stop this bit from being used.
TDB7
TDC2.6
DS0 Bit 7 Suppress Enable. Set to one to stop this bit from
being used.
TDB6
TDC2.5
DS0 Bit 6 Suppress Enable. Set to one to stop this bit from
being used.
TDB5
TDC2.4
DS0 Bit 5 Suppress Enable. Set to one to stop this bit from
being used.
TDB4
TDC2.3
DS0 Bit 4 Suppress Enable. Set to one to stop this bit from
being used.
TDB3
TDC2.2
DS0 Bit 3 Suppress Enable. Set to one to stop this bit from
being used.
TDB2
TDC2.1
DS0 Bit 2 Suppress Enable. Set to one to stop this bit from
being used.
TDB1
TDC2.0
DS0 Bit 1 Suppress Enable. LSB of the DS0. Set to one to
stop this bit from being used.
15.
INTERLEAVED PCM BUS OPERATION
In many architectures, the outputs of individual framers are combined into higher speed serial buses to
simplify transport across the system. The DS21FT40 can be configured to allow each framer’s data and
signaling busses to be multiplexed into higher speed data and signaling busses eliminating external
hardware saving board space and cost. In particular, the four framers associated with each DS21Q44 die
can be combined.
The interleaved PCM bus option supports two bus speeds and interleave modes. The 4.096 MHz bus
speed allows two framers to share a common bus. The 8.192 MHz bus speed allows all four of the
framers for each DS21Q44 die to share a common bus. Framers can interleave their data either on byte or
frame boundaries. Framers that share a common bus must be configured through software and require
several device pins to be connected together externally (see figures 15-1 & 15-2). Each framer’s elastic
stores must be enabled and configured for 2.048 MHz operation. The signal RSYNC must be configured
as an input on each framer.
相關(guān)PDF資料
PDF描述
DS21FT42 DATACOM, FRAMER, PBGA300
DS21FT42N DATACOM, FRAMER, PBGA300
DS21FF42 DATACOM, FRAMER, PBGA300
DS21FF42N DATACOM, FRAMER, PBGA300
DS21FT44N DATACOM, FRAMER, PBGA300
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21FT40N 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS21FT42 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
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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