参数资料
| 型号： | XRT72L71IQ |
| 厂商： | Exar Corporation |
| 文件页数： | 62/102页 |
| 文件大小： | 0K |
| 描述： | IC FRAMER DS3 ATM UNI 160PQFP |
| 产品变化通告： | XRT72Lx Series Obsolescence 02/May/2012 |
| 标准包装： | 24 |
| 控制器类型： | DS3 ATM UNI，透明通道调帧器 |
| 电源电压： | 3.3V |
| 电流 - 电源： | 120mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 160-BQFP |
| 供应商设备封装： | 160-PQFP（28x28） |
| 包装： | 托盘 |
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XRT72L71
á
DS3 ATM UNI/CLEAR CHANNEL FRAMER
REV. 1.1.0
58
TABLE 22: RX DS3 LAPD STATUS REGISTER
REGISTER 21
RX DS3 LAPD STATUS REGISTER
HEX ADDRESS: 0X15
BIT
FUNCTION
TYPE
DEFAULT
DESCRIPTION-OPERATION
7Unused
RO
0
6Rx ABORT
RO
0
0: Indicates that the LAPD Receiver is NOT currently receiving an ABORT
Message.
1: Indicates that the LAPD Receiver is currently receiving an ABORT Mes-
sage.
NOTE: This bit-field is only active if the XRT72L71 has been configured to
support the “C-bit Parity” Framing format.
5
Rx LAPD Type(0)
RO
0
00: LAPD Message is Test Signal Identification type. (RAM Depth is 76 bytes
(38 words))
01: LAPD Message is Idle Signal Identification type. (RAM Depth is 76 bytes
(38 words))
10: LAPD Message is CL Path Identification type. (RAM Depth is 76 bytes
(38 words))
11: LAPD Message is ITU-T Path Identification type. (RAM Depth is 82 bytes
(41 words))
NOTE: These two bit-fields are only active if the XRT72L71 has been con-
figured to support the “C-bit Parity” Framing Format.
4
Rx LAPD Type(1)
RO
0
3
Rx CR Type
RO
0
0: Received LAPD message originated from customer installation
1: Received LAPD message originated from terminal in the network
NOTE: This bit-field is only active if the XRT72L71 has been configured to
support the “C-bit Parity” Framing Format.
2
Rx FCS Error
RO
0
0: CRC-16 Error was NOT detected within the most recently received LAPD
Message.
1: CRC-16 Error was detected within the most recently received LAPD Mes-
sage.
NOTE: This bit-field is only active if the XRT72L71 has been configured to
support the “C-bit Parity” Framing Format.
1
Rx End of Message
RO
0
0: Indicates that either the “Receive LAPD Message” Buffer is empty, or that
the LAPD Receiver is currently receiving a LAPD Message.
1: Indicates that a full LAPD Message has been received by the LAPD
Receiver and that this message is residing within the “Receive LAPD Mes-
sage” Buffer.
NOTE: This bit-field is only active if the XRT72L71 has been configured to
support the “C-bit Parity” Framing Format.
0
Flag Present
RO
0
0: Indicates that the LAPD Receiver is NOT currently receiving the “Flag
Sequence”, within the LAPD Channel.
1: Indicates that the LAPD Receiver is currently receiving the “Flag
Sequence” within the LAPD Channel.
NOTE: This bit-field is only active if the XRT72L71 has been configured to
support the “C-bit Parity” Framing Format.
相关PDF资料 |
PDF描述 |
|---|---|
| XRT73L02MIV-F | IC LIU E3/DS3/STS-1 2CH 100TQFP |
| XRT73L03BIV-F | IC LIU E3/DS3/STS-1 3CH 120LQFP |
| XRT73L04BIV-F | IC LIU E3/DS3/STS-1 4CH 144LQFP |
| XRT73L06IB-F | IC LIU E3/DS3/STS-1 6CH 217BGA |
| XRT73LC00AIV-F | IC LIU STS1/DS3/E3 SGL 44TQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT72L71IQ-F | 功能描述:网络控制器与处理器 IC Single CH DS3 UNI (3.3V) 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 |
| XRT72L73IB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| XRT72L74IB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| XRT7300 | 制造商:EXAR 制造商全称:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT7300ES | 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 |
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