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參數(shù)資料
| 型號(hào)： | TMS320F28044ZGMS |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 數(shù)字信號(hào)處理 |
| 英文描述： | Digital Signal Processor |
| 中文描述： | 數(shù)字信號(hào)處理器 |
| 文件頁(yè)數(shù)： | 100/107頁(yè) |
| 文件大?。?/td> | 784K |
| 代理商： | TMS320F28044ZGMS |
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6.11.3 Sequential Sampling Mode (Single-Channel) (SMODE = 0)
Analog Input on
Channel Ax or Bx
ADC Clock
Sample and Hold
SH Pulse
SMODE Bit
t
dschx_n
t
dschx_n+1
Sample n
Sample n+1
Sample n+2
t
SH
ADC Event Trigger from
ePWM or Other Sources
t
d(SH)
TMS320F28044
Digital Signal Processor
SPRS357B–AUGUST 2006–REVISED MAY 2007
In sequential sampling mode, the ADC can continuously convert input signals on any of the channels (Ax
to Bx). The ADC can start conversions on event triggers from the ePWM, software trigger, or from an
external ADCSOC signal. If the SMODE bit is 0, the ADC will do conversions on the selected channel on
every Sample/Hold pulse. The conversion time and latency of the Result register update are explained
below. The ADC interrupt flags are set a few SYSCLKOUT cycles after the Result register update. The
selected channels will be sampled at every falling edge of the Sample/Hold pulse. The Sample/Hold pulse
width can be programmed to be 1 ADC clock wide (minimum) or 16 ADC clocks wide (maximum).
Figure 6-22. Sequential Sampling Mode (Single-Channel) Timing
Table 6-33. Sequential Sampling Mode Timing
AT 25-MHz
ADC CLOCK,
t
c(ADCCLK)
= 40 ns
SAMPLE n
SAMPLE n + 1
REMARKS
t
d(SH)
Delay time from event trigger to
sampling
Sample/Hold width/Acquisition
Width
Delay time for first result to appear
in Result register
Delay time for successive results to
appear in Result register
2.5t
c(ADCCLK)
t
SH
(1 + Acqps) *
t
c(ADCCLK)
4t
c(ADCCLK)
40 ns with Acqps = 0
Acqps value = 0-15
ADCTRL1[8:11]
t
d(schx_n)
160 ns
t
d(schx_n+1)
(2 + Acqps) *
t
c(ADCCLK)
80 ns
Electrical Specifications
100
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TMX320F28044GGMQ | Digital Signal Processor |
| TMX320F28044GGMS | Digital Signal Processor |
| TMX320F28044PZQ | Digital Signal Processor |
| TMX320F28044PZS | Digital Signal Processor |
| TMX320F28044ZGMQ | Digital Signal Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TMS320F28045PZA | 制造商:Texas Instruments 功能描述:- Trays |
| TMS320F28045PZS | 制造商:Texas Instruments 功能描述:- Trays |
| TMS320F28050PNQ | 制造商:Texas Instruments 功能描述:GIZMO |
| TMS320F28050PNS | 制造商:Texas Instruments 功能描述:GIZMO |
| TMS320F28050PNT | 制造商:Texas Instruments 功能描述:GIZMO |
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