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| 型号： | DS2181AN |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/32页 |
| 文件大小： | 0K |
| 描述： | IC TXRX CEPT PRIM RATE IND 40DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 10 |
| 类型： | 收发器 |
| 驱动器/接收器数： | 1/1 |
| 规程： | CEPT |
| 电源电压： | 4.5 V ~ 5.5 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 40-DIP（0.600"，15.24mm） |
| 供应商设备封装： | 40-PDIP |
| 包装： | 管件 |
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DS2181A
10 of 32
RCR: RECEIVE CONTROL REGISTER Figure 6
(MSB)
(LSB)
-
RSM
CMSC
CMRC
FRC
SYNCE
RESYNC
SYMBOL
POSITION
NAME AND DESCRIPTION
-
RCR.7
Reserved; must be 0 for proper operation.
-
RCR.6
Reserved; must be 0 for proper operation.
RSM
RCR.5
Received Signaling Mode
0 = Channel Associated Signaling (CAS).
1 = Common Channel Signaling (CCS).
CMSC
RCR.4
CAS Multiframe Sync Criteria
0 = Declare sync when fixed sync criteria met.
1 = Declare sync when fixed criteria are met and two additional
consecutive valid multiframe alignment signals are detected.
CMRC
RCR.3
CAS Multiframe Resync Criteria
0 = Utilize only fixed resync criteria.
1 = Resync if fixed criteria met and/or if two consecutive timeslot
16 words have values of 0 in the first four MSB positions
(0000xxxx).
FRC
RCR.2
Frame Resync Criteria
0 = Utilize only fixed resync criteria.
1 = Resync if fixed criteria met and/or if bit 2 in timeslot 0 of non-
align frames is received in error on three consecutive occasions.
SYNCE
RCR.1
Sync Enable
If clear, the synchronizer will automatically begin resync if error
criteria are met. If high, no auto resync occurs.
RESYNC
RCR.0
Resync
When toggled low to high, the receive synchronizer will initiate
immediately.
The bit must be cleared, then set again for
subsequent resyncs.
CEPT FRAME STRUCTURE
The CEPT frame is made up of 32 8-bit channels (time-slots) numbered from 0 to 31. The frame
alignment signal in bit positions 2 through 8 of timeslot 0 of every other frame is independent of the
various multiframe modes described below. Outputs TAF and RAF indicate frames which contain the
alignment signal. Timeslot 0 of frames not containing the frame alignment signal is used for alarm and
national data. See the separate DS2181A CEPT Transceiver Application Note for more details.
CAS SIGNALLING
CEPT networks support Channel Associated Signaling (CAS) or Common Channel Signaling (CCS).
These signaling modes are independently selectable for transmit and receive sides.
CAS (selected when TCR.5 = 0 and/or when RCR.5 = 0) is a bit-oriented signaling technique which
utilizes a 16-frame multiframe. The multiframe alignment signal (0-hex), extra and alarm bits occupy
timeslot 16 of frame 0. Timeslot 16 of the remaining 15 frames is reserved for channel signaling data.
Four signaling bits (A, B, C and D) are transmitted once per multiframe as shown in Figure 7. Input
TMSYNC establishes the transmitted CAS multiframe position. Signaling data can be sourced from input
TSD (TCR.6 = 1) or multiplexed into TSER (TCR.6 = 0).
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2181AQ | 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 |
| DS2181AQ/T&R | 制造商:Maxim Integrated Products 功能描述:CEPT TRANCEIVER-PLCC-TRL - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TXRX CEPT PRIMARY RATE 44PLCC |
| DS2181AQ/T&R+ | 制造商:Maxim Integrated Products 功能描述:CEPT TRNSCVR 1TX 1RX 44PLCC - Tape and Reel |
| DS2181AQ/T&R | 功能描述:网络控制器与处理器 IC CEPT Primary Rate Transceiver 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 |
| DS2181AQ+ | 功能描述:网络控制器与处理器 IC CEPT Primary Rate Transceiver 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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