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0V to 16V, Dual Hot-Swap Controller with 10-Bit
Current and Voltage Monitor and 4 LED Drivers
Send Byte
The send byte protocol allows the master device to send
one byte of data to the slave device (see Figure 9). The
send byte presets a register pointer address for a sub-
sequent read or write. The slave sends a NACK instead
of an ACK if the master tries to send an address that is
not allowed. If the master sends a STOP condition, the
internal address pointer does not change. The send byte
procedure follows:
1) The master sends a START condition.
2) The master sends the 7-bit slave address and a write
bit (low).
3) The addressed slave asserts an ACK on SDA.
4) The master sends an 8-bit data byte.
5) The addressed slave asserts an ACK on SDA.
6) The master sends a STOP condition.
Write Byte
The write byte/word protocol allows the master device
to write a single byte in the register bank or to write to a
series of sequential register addresses. The write byte
procedure follows:
1) The master sends a START condition.
2) The master sends the 7-bit slave address and a write
bit (low).
3) The addressed slave asserts an ACK on SDA.
4) The master sends an 8-bit command code.
5) The addressed slave asserts an ACK on SDA.
6) The master sends an 8-bit data byte.
7) The addressed slave asserts an ACK on SDA.
8) The addressed slave increments its internal address
pointer.
9) The master sends a STOP condition or repeats steps
6, 7, and 8.
To write a single byte to the register bank, only the 8-bit
command code and a single 8-bit data byte are sent.
The data byte is written to the register bank if the com-
mand code is valid.
The slave generates a NACK at step 5 if the command
code is invalid. The command code must be in the range
of 0x00 to 0x45 . The internal address pointer returns
to 0x00 after incrementing from the highest register
address.
Receive Byte
The receive byte protocol allows the master device to
read the register content of the MAX5970 (see Figure 9).
The EEPROM or register address must be preset with a
send byte protocol first. Once the read is complete, the
internal pointer increases by one. Repeating the receive
byte protocol reads the contents of the next address.
The receive byte procedure follows:
1) The master sends a START condition.
2) The master sends the 7-bit slave address and a read
bit (high).
3) The addressed slave asserts an ACK on SDA.
4) The slave sends 8 data bits.
5) The slave increments its internal address pointer.
6) The master asserts an ACK on SDA and repeats
steps 4 and 5 or asserts a NACK and generates a
STOP condition.
The internal address pointer returns to 0x00 after incre-
menting from the highest register address.
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相关代理商/技术参数
MAX5971AETI+ 功能描述:热插拔功率分布 IEEE 802.3af/at PSE Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5971AETI+T 功能描述:热插拔功率分布 IEEE 802.3af/at PSE Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX5971AETI+W 制造商:Maxim Integrated Products 功能描述:IEEE802.3 AT PSE SWITCH - Rail/Tube
MAX5971AEVKIT 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
MAX5971AEVKIT+ 制造商:Maxim Integrated Products 功能描述:PD INTERFACE CONTROLLER - Boxed Product (Development Kits)
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MAX5971BETI+T 功能描述:热插拔功率分布 IEEE 802.3af/at PSE Controller RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube