参数资料
型号: LMP90079MH/NOPB
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO28
封装: LEAD FREE, PLASTIC, MO-153, TSSOP-28
文件页数: 30/62页
文件大小: 1721K
代理商: LMP90079MH/NOPB
DrdybCase3: Routing DRDYB to D6
30169791
FIGURE 25. DrdybCase3 Connection Diagram
The drdyb signal can be routed to pin D6 by setting
SPI_DRDYB_D6 high and SDO_DRDYB_DRIVER to 0x4.
This is the behavior for DrdybCase3 as shown in Figure 25.
The timing protocol for this case can be seen in Figure 26.
Since DRDYB is separated from SDO, it can be monitored
using the interrupt or polling method. If polled, the drdyb signal
needs to be polled faster than t
DRDYB to detect a drdyb as-
sertion. When drdyb asserts, assert CSB to start the SPI
transaction and begin writing the Instruction Bytes (INST1,
UAB, INST2) to read from or write to registers.
30169789
FIGURE 26. Timing Protocol for DrdybCase3
16.5.7 Data Only Read Transaction
In a data only read transaction, one can directly access the
data byte(s) as soon as the CSB is asserted without having
to send any instruction byte. This is useful as it brings down
the latency as well as the overhead associated with the in-
struction byte (as well as the Upper Address Byte, if any).
In order to use the data only transaction, the device must be
placed in the data first mode. The following table lists trans-
action formats for placing the device in and out of the data first
mode and reading the mode status.
TABLE 5. Data First Mode Transactions
Bit[7]
Bits[6:5]
Bit[4]
Bits[3:0]
Data Bytes
Enable Data First Mode Instruction
1
11
1
1010
None
Disable Data First Mode Instruction
1
11
1
1011
None
Read Mode Status Transaction
1
00
1
1111
One
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LMP90079MHX/NOPB 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
LMP90080 制造商:NSC 制造商全称:National Semiconductor 功能描述:Sensor AFE System: Multi-Channel, Low-Power 16-Bit
LMP90080MH/NOPB 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
LMP90080MHE/NOPB 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
LMP90080MHX/NOPB 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