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參數(shù)資料
| 型號(hào)： | 90E36ERGI |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 模擬信號(hào)調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQFP48 |
| 封裝： | TQFP-48 |
| 文件頁(yè)數(shù)： | 25/75頁(yè) |
| 文件大?。?/td> | 904K |
| 代理商： | 90E36ERGI |
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90E36
POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
SPI / DMA Interface
31
August 24, 2011
Figure-19 Sample Bit Sequence Example
4.3.2
CONTROL SEQUENCE FOR EXTERNAL DEVICE
To start and stop the DMA dump sequence, the external device fol-
lows the rules described below:
Start of the dump process:
a) The external device configures the DMACtrl register.
b) The external device switches to SPI slave mode. Note that the
parameters of clock idle state / driving edge, sample bit width and pin
direction of SPI_D0/SPI_D1 configured to 90E36 should match with
external device's settings.
c) The external device asserts the DMA_CTRL signal. The 90E36
swaps I/O direction if necessary after it has detected that master has
asserted the DMA. The samples are dumped out with a delay of at most
1 sample period (125us).
Stop of the dump process:
a) The external device de-asserts the DMA_CTRL signal. The 90E36
stops the transaction after current (all selected) samples have been suc-
cessfully sent out.
b) The external device waits one sample period of 125us or detects
that the CS signal is pulled high, then switches the interface back to
master mode.
Samples
Samples on MOSI
CS
I1
I2
V3
b23
b16 b15
b8 b7
b0 00 0 0
I1 sample N
8 pads
00 0 0
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 90E36ERGI8 | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| 90E3-SERIES | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Optoelectronic |
| 90E46EMGI | 功能描述:計(jì)量片上系統(tǒng) - SoC RoHS:否 制造商:Maxim Integrated 核心:80515 MPU 處理器系列:71M6511 類型:Metering SoC 最大時(shí)鐘頻率:70 Hz 程序存儲(chǔ)器大小:64 KB 數(shù)據(jù) RAM 大小:7 KB 接口類型:UART 可編程輸入/輸出端數(shù)量:12 片上 ADC: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:LQFP-64 封裝:Reel |
| 90E46EMGI8 | 制造商:Integrated Device Technology Inc 功能描述:Energy Metering SoC 100-Pin TQFP 制造商:Integrated Device Technology Inc 功能描述:100-PIN TQFP - Tape and Reel |
| 90E9A | 制造商:NDK 制造商全稱:NDK 功能描述:crystal filter that supports surface mounting. |
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