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参数资料
| 型号： | DS21FT40N |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Digital Transmission Controller |
| 英文描述： | DATACOM, FRAMER, PBGA300 |
| 封装： | BGA-300 |
| 文件页数： | 61/87页 |
| 文件大小： | 386K |
| 代理商： | DS21FT40N |
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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.
相关PDF资料 |
PDF描述 |
|---|---|
| DS21FT40 | DATACOM, FRAMER, PBGA300 |
| DS21FT42 | DATACOM, FRAMER, PBGA300 |
| DS21FT42N | DATACOM, FRAMER, PBGA300 |
| DS21FF42 | DATACOM, FRAMER, PBGA300 |
| DS21FF42N | DATACOM, FRAMER, PBGA300 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21FT42 | 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21FT42N | 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21FT44 | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21FT44+ | 功能描述:网络控制器与处理器 IC 4X3 E1 Framer E1 Framer E1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS21FT44N | 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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