参数资料
型号: DS21FT40
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: 29/87页
文件大小: 386K
代理商: DS21FT40
DS21FT40
35 of 87
SYMBOLS
POSITION
NAME AND DESCRIPTION
1 = Interrupt request pending.
F0SR
ISR.0
FRAMER 0 SR1 or SR2 INTERRUPT REQUEST.
0 = No interrupt request pending.
1 = Interrupt request pending.
RIR: RECEIVE INFORMATION REGISTER (Address=08 Hex)
(MSB)
(LSB)
TESF
TESE
RESF
RESE
CRCRC
FASRC
CASRC
SYMBOLS
POSITION
NAME AND DESCRIPTION
TESF
RIR.7
Transmit Side Elastic Store Full. Set when the transmit side
elastic store buffer fills and a frame is deleted.
TESE
RIR.6
Transmit Side Elastic Store Empty. Set when the transmit side
elastic store buffer empties and a frame is repeated.
RIR.5
Not Assigned. Could be any value.
RESF
RIR.4
Receive Side Elastic Store Full. Set when the receive side
elastic store buffer fills and a frame is deleted.
RESE
RIR.3
Receive Side Elastic Store Empty. Set when the receive side
elastic store buffer empties and a frame is repeated.
CRCRC
RIR.2
CRC Resync Criteria Met. Set when 915/1000 code words are
received in error.
FASRC
RIR.1
FAS Resync Criteria Met. Set when 3 consecutive FAS words
are received in error.
CASRC
RIR.0
CAS Resync Criteria Met. Set when 2 consecutive CAS MF
alignment words are received in error.
SSR: SYNCHRONIZER STATUS REGISTER (Address=1E Hex)
(MSB)
(LSB)
CSC5
CSC4
CSC3
CSC2
CSC0
FASSA
CASSA
CRC4SA
SYMBOLS
POSITION
NAME AND DESCRIPTION
CSC5
SSR.7
CRC4 Sync Counter Bit 5. MSB of the 6–bit counter.
CSC4
SSR.6
CRC4 Sync Counter Bit 4.
CSC3
SSR.5
CRC4 Sync Counter Bit 3.
CSC2
SSR.4
CRC4 Sync Counter Bit 2.
CSC0
SSR.3
CRC4 Sync Counter Bit 0. LSB of the 6–bit counter. The next
to LSB is not accessible.
FASSA
SSR.2
FAS Sync Active. Set while the synchronizer is searching for
alignment at the FAS level.
CASSA
SSR.1
CAS MF Sync Active. Set while the synchronizer is searching
for the CAS MF alignment word.
CRC4SA
SSR.0
CRC4 MF Sync Active. Set while the synchronizer is
searching for the CRC4 MF alignment word.
相关PDF资料
PDF描述
DS21FT42 DATACOM, FRAMER, PBGA300
DS21FT42N DATACOM, FRAMER, PBGA300
DS21FF42 DATACOM, FRAMER, PBGA300
DS21FF42N DATACOM, FRAMER, PBGA300
DS21FT44N DATACOM, FRAMER, PBGA300
相关代理商/技术参数
参数描述
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: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