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| 型号： | DS32512N |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 58/130页 |
| 文件大小： | 0K |
| 描述： | IC 12CH DS3/E3/STS1 LIU 484-BGA |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 线路接口装置（LIU） |
| 规程： | DS3 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 484-BGA |
| 供应商设备封装： | 484-BGA（23x23） |
| 包装： | 托盘 |
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DS32506/DS32508/DS32512
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When
A BPV immediately preceded by a valid pulse (B, V).
–
A BPV with the same polarity as the last BPV.
–
The third zero in an EXZ.
When
–
A BPV immediately preceded by a valid pulse (B, V).
–
A BPV with the same polarity as the last BPV.
In E3 mode, HDB3 decoding is performed, and RLCV is asserted during any RCLK cycle where the data on RDAT
causes one of the following code violations:
When
A BPV immediately preceded by a valid pulse (B, V) or by a valid pulse and a zero (B, 0, V).
–
A BPV with the same polarity as the last BPV.
–
The fourth zero in an EXZ.
When
LINE.RCR:E3CVE = 1:
–
A BPV with the same polarity as the last BPV.
In any cycle where RLCV is asserted to flag a BPV, the RDAT pin outputs a one. In any cycle where RLCV is
asserted to flag an EXZ, the RDAT pin outputs a zero. The state bit that tracks the polarity of the last BPV is
toggled on every BPV, whether part of a valid B3ZS/HDB3 codeword or not.
8.3.6.3
RCLK Inversion
The polarity of RCLK can be inverted to support a glueless interface to a variety of neighboring components.
Normally, data is output on the RPOS/RDAT and RNEG/RLCV pins on the falling edge of RCLK. To output data on
these pins on the rising edge of RCLK, pull the RCLKI pin high or set the PORT.INV:RCLKI configuration bit.
8.3.6.4
Receiver Output Disable
The RCLK, RPOS/RDAT and RNEG/RLCV pins can be disabled (put in a high-impedance state) to support
protection switching and redundant-LIU applications. This capability supports system configurations where two or
more LIUs are wire-ORed together and a system processor selects one to be active. To disable these pins, set the
PORT.CR2:ROD configuration bit.
8.3.7 Power-Down
To minimize power consumption when the receiver is not being used, assert the RPD pin (all ports) or the
PORT.CR1:RPD configuration bit (per port). When the receiver is powered down, the RCLK, RPOS/RDAT, and
RNEG/RLCV pins are disabled (high impedance). In addition, the RXP and RXN pins become high impedance.
8.3.8 Input Failure Detection
The LIU receiver can detect opens and shorts on the RXP and RXN differential inputs. By default, the receiver
detects the following problems, collectively labeled type 1 failures: open RXP connection, open RXN connection,
common-mode RXP/RXN short to VDD, and common-mode RXP/RXN short to VSS. Type 1 failures are reported on
If LIU.CR2:RFL2E = 1, the receiver also detects a type 2 failure, which is an open or high-impedance path between
RXP and RXN. In a board with the external components shown in Figure 4-1 or Figure 4-2, the receive transformer
normally presents a low-impedance path between RXP and RXN. To detect a type 2 failure, the receiver connects
an 40
greater than about 5k
Ω the receiver declares a type 2 failure on LIU.SR:RFAIL2. When the type 2 failure detection
circuitry is enabled, internal termination must be disabled (LIU.CR2:RTRE = 0) and external termination must not
be present or a type 2 failure will not be detected because the impedance of the termination is below the type 2
failure threshold.
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相关代理商/技术参数 |
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|---|---|
| DS32512N# | 功能描述:网络控制器与处理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit 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 |
| DS32512N+ | 功能描述:网络控制器与处理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit 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 |
| DS32512NA2 | 制造商:Maxim Integrated Products 功能描述:DS32512 X12 DS3/E3 LIU REVA2 IND - Rail/Tube |
| DS32512NW | 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 |
| DS32512W | 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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