参数资料
| 型号： | DS21349Q+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 11/35页 |
| 文件大小： | 0K |
| 描述： | IC LIU T1/J1 3.3V 28-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 37 |
| 类型： | 线路接口装置（LIU） |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 管件 |
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DS21349
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9. SOFTWARE MODE
The DS21349 operates in software mode when the MODE1 pin is pulled high. In software mode, a
microprocessor controls the device and reads its status through the serial port, which provides access to
the internal registers. The host processor can completely configure the device as well as get diagnostics
and status reports through the serial port. In NRZ mode, bipolar violation insertions and logic error
insertions are controlled by the BPV and INSLER pins. Similarly, the recovered clock, data, and BPV
detection are available only at output pins. All other mode settings and diagnostic information are
available through the serial port. Figure 9-1 and Figure 9-2 show the serial port data structure. The
registers are accessible through a 16-bit word composed of an 8-bit command and address byte and a
subsequent 8-bit data byte. Software mode allows control of the output timing. The CLKE pin determines
when SDO is valid relative to SCLK and when receive data is valid relative to RCLK.
9.1
Interrupt Handling
In software mode, the DS21349 provides a latched interrupt output pin. When enabled, a change in any of
the status register bits generates an interrupt. When an interrupt occurs, the INT output pin is driven low.
The INT output pin structure is an open-drain only. Each device that shares the INT line requires an
external pullup resistor. The interrupt is cleared when the interrupt condition no longer exists, and a 1 is
written to the appropriate bit in the interrupt mask register. Leaving a 1 in any of the bits in the interrupt
mask register masks that interrupt. Clearing that bit re-enables the interrupt.
Table 9-A. CLKE Pin Selection
CLKE PIN
OUTPUT
OUTPUT UPDATED ON
RPOS
RNEG
RDATA
Falling RCLK
LOW
SDO
Rising SCLK
RPOS
RNEG
RDATA
Rising RCLK
HIGH
SDO
Falling SCLK
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21349Q/T&R+ | 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel |
| DS21349Q/T&R | 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 |
| DS21349Q+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface 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 |
| DS21349Q+T&R | 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LIU T1/J1 3.3V 28-PLCC |
| DS21349Q+T&R | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface 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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