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参数资料
| 型号： | DS2180AQN/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 33/35页 |
| 文件大小： | 0K |
| 描述： | IC TRANSCEIVER T1 IND 44-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 功能： | 收发器 |
| 接口： | T1 |
| 电路数： | 1 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 电流 - 电源： | 3mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-LCC（J 形引线） |
| 供应商设备封装： | 44-PLCC（16.59x16.59） |
| 包装： | 带卷 (TR) |
| 包括： | 警报生成和检测，B7 填充模式，B8ZS 模式，错误检测和计数器，“硬件”模式，透明模式 |
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DS2180A
7 of 35
ACB: ADDRESS COMMAND BYTE Figure 4
(MSB)
(LSB)
-
FRSR2
EYELMD
FM
SYELMD
B8ZS
B7
LPBK
SYMBOL
POSITION
NAME AND DESCRIPTION
-
CCR.7
Reserved, must be 0 for proper operation.
FRSR2
CCR.6
Function of REC Status Register 2.
0 = Detected B8ZS code words reported at RSR.2.
1 = COFA (Change-of-Frame Alignment) reported at RSR.2 when
last resync resulted in change of frame or multiframe alignment.
EYELMD
CCR.5
193E Yellow Mode Select.
0 = Yellow alarm is a repeating pattern set of 00 hex and FF hex.
1 = Yellow alarm is a 0 in the bit 2 position of all channels.
FM
CCR.4
Frame Mode Select.
0 = D4 (193S, 12 frames/superframe).
1 = Extended (193E, 24 frames/superframe).
SYELMD
CCR.3
193S Yellow Mode Select. Determines yellow alarm type to be
transmitted and detected while in 193S framing. If set, yellow
alarms are a 1 in the S-bit position of frame 12; if cleared, yellow
alarm is a 0 in bit 2 of all channels. Does not affect 193E yellow
alarm operation.
B8ZS
CCR.2
Bipolar eight zero substitution.
0 = No B8ZS.
1 = B8ZS enabled.
(Note: This bit must be set to 0 when CCR.1=1)
B7
CCR.1
Bit seven zero suppression. If CCR.1=1, channels with an all zero
content will be transmitted with bit 7 forced to 1. If CCR.1=0, no
bit 7 stuffing occurs.
(Note: This bit must be set to 0 when CCR.2=1)
LPBK
CCR.0
Loopback. When set, the device internally loops output transmit
data into the incoming receive data buffers and TCLK is internally
substituted for RCLK.
LOOPBACK (Refer to Figure 4)
Enabling loopback will typically induce an out-of-frame (OOF) condition. If appropriate bits are set in
the receive control register, the receiver will resync to the looped transmit frame alignment. During the
looped condition, the transmit outputs (TPOS, TNEG) will transmit unframed all 1's. All operating modes
(B8ZS, alarm, signaling, etc.) except for blue alarm transmission are available in loopback.
BIT SEVEN STUFFING
Existing systems meet 1's density requirements by forcing bit 7 of all zero channels to 1. Bit 7 stuffing is
globally enabled by asserting bit CCR.1 and may be disabled on an individual channel basis by setting
appropriate bits in TTR1–TTR3. Bit 7 stuffing and B8ZS modes should not be enabled simultaneously.
Enabling both results in LOS.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2180IND | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| DS2180Q | 制造商:未知厂家 制造商全称:未知厂家 功能描述:PCM Transceiver |
| DS2180QIND | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC |
| DS2181A | 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 |
| DS2181A+ | 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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