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| 型号： | DS1852B-000+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 22/26页 |
| 文件大小： | 0K |
| 描述： | IC MONITOR TXRX OPTICAL 25-BGA |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 收发器 |
| 电源电压： | 2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 25-TFBGA，CSPBGA |
| 供应商设备封装： | 25-BGA（5x5） |
| 包装： | 管件 |
DS1852
5 of 26
DEVICE OPERATION
Security
To prevent accidental overwrites of key device data, a data lockout feature is incorporated. A 32-bit
password provides access to the “manufacturer” memory locations. These locations are in addition to the
unprotected “user” memory locations:
1) User—This is the default state after power-up; it allows read access to standard IEEE identity table
and standard monitoring and status functions.
2) Manufacturer Level 1—This allows access to customer data table and some selected setups (password
1).
3) Manufacturer Level 2—This allows access to all memory, settings, and features (password 2).
The level 1 password is located in Table 03h EEPROM (bytes D3h to D6h) and may be changed by
gaining access through the level 2 password.
The level 2 password is set in protected EEPROM and is programmed during factory test.
During power-up, the 32-bit password entry (addresses 7Bh to 7Eh) is set to all 1s. This is the value that
is compared to the level 1 password entry in Table 03h to grant level 1 access. Therefore, the level 1
password should not be set to all 1s or the user will gain level 1 access after each power-on.
By default, both passwords are factory preset to 00h.
To gain access to a security level, a 4-byte password is written into Table 00h, bytes 7Bh to 7Eh. If the
written data matches one of the passwords, that corresponding level of access is granted until the
password entry is changed or the power is cycled. Entering the level 2 password allows access to both
the level 1 data and the level 2 data. The 4-byte password is write-only.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1852B-000/C | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| DS1852B-000/T&R | 制造商:Maxim Integrated Products 功能描述:IC MONITOR TXRX OPTICAL 25-BGA |
| DS1852B-000/T&R | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| DS1852B-000+ | 功能描述:模数转换器 - ADC Optical Transceiver Diagnostic Monitor RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| DS1852B-000+T&R | 制造商:Maxim Integrated Products 功能描述:OPTICAL TRNSCVR 25BGA - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MONITOR TXRX OPTICAL 25-BGA 制造商:Maxim Integrated Products 功能描述:Data Converter ICs - Various Optical Transceiver Diagnostic Monitor |
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