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参数资料
| 型号： | LM12L438CIWMX |
| 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： | SOP-28 |
| 文件页数： | 60/80页 |
| 文件大小： | 1552K |
| 代理商： | LM12L438CIWMX |
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70 Digital Interface (Continued)
Burst read cycle
A burst read cycle starts the same way
as a single read cycle but the B bit in the command packet
is set to one indicating a burst read cycle After the first 16
bits of data carrying the command packet is written to the
DAS the DAS begins to send out the data words from the
addressed register on the DR line repeatedly Each data
word is preceded by an FSR pulse for synchronization To
terminate a burst read cycle the processor does a dummy
read from the configuration register during the last
data word This dummy read should be started so that its
FSR pulse occurs during the 15th to 17th SCLK cycle of the
last data word as shown in
Figure 15c The dummy read
terminates the burst read cycle and shifts out the contents
of the configuration register on the DR line This data can be
discarded After transfer of the last data bit from the config-
uration register the DAS is ready for a new communication
cycle to begin
TLH11879 – 47
(a) Write Cycle
TLH11879 – 48
(b) Read Cycle
FIGURE 15 Timing Diagram for LM12434 and LM12 L 438 TMS320 Serial Interface Mode
63
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相关代理商/技术参数 |
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| LM12L454CIV | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| LM12L458 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:12-Bit + Sign Data Acquisition System with Self-Calibration |
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| LM12L458CIV | 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 |
| LM12L458CIV/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 |
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