参数资料
型号: TMX320R2812ZHHQ
厂商: Texas Instruments, Inc.
元件分类: 数字信号处理
英文描述: TMS320R2811, TMS320R2812 Digital Signal Processors
中文描述: TMS320R2811,TMS320R2812数字信号处理器
文件页数: 131/147页
文件大小: 2021K
代理商: TMX320R2812ZHHQ
Electrical Specifications
131
June 2004
SPRS257
6.29.5
Detailed Description
6.29.5.1
Reference Voltage
The on-chip ADC has a built-in reference, which provides the reference voltages for the ADC. ADCVREFP
is set to 2.0 V and ADCVREFM is set to 1.0 V.
6.29.5.2
Analog Inputs
The on-chip ADC consists of 16 analog inputs, which are sampled either one at a time or two channels at a
time. These inputs are software-selectable.
6.29.5.3
Converter
The on-chip ADC uses a 12-bit four-stage pipeline architecture, which achieves a high sample rate with low
power consumption.
6.29.5.4
Conversion Modes
The conversion can be performed in two different conversion modes:
Sequential sampling mode (SMODE = 0)
Simultaneous sampling mode (SMODE = 1)
6.29.6
Sequential Sampling Mode (Single-Channel) (SMODE = 0)
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 Event Managers (EVA/EVB), 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).
A
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TMX320R2812ZHHS TMS320R2811, TMS320R2812 Digital Signal Processors
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