TMS320C2811 Datasheet

IC型号：
TMS320C2811
PDF描述：
具有片内 ROM 的 32 位数字信号控制器
文件大小：
2601.82KB
PDF页数：
162页
芯片厂家：
TI

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TMS320F2810, TMS320F2812

DIGITAL SIGNAL PROCESSORS

SPRS174B 鈥?APRIL 2001 鈥?REVISED SEPTEMBER 2001

enhanced analog-to-digital converter (ADC) module (continued)

The ADC module in the F2810 and F2812 has been enhanced to provide flexible interface to event managers

A and B. The ADC interface is built around a fast, 12-bit ADC module with a total minimum conversion time of

200 ns (S/H + conversion) per conversion. The ADC module has 16 channels, configurable as two independent

8-channel modules to service event managers A and B. The two independent 8-channel modules can be

cascaded to form a 16-channel module. Although there are multiple input channels and two sequencers, there

is only one converter in the ADC module. Figure 15 shows the block diagram of the F2810 and F2812 ADC

module.

The two 8-channel modules have the capability to autosequence a series of conversions, each module has the

choice of selecting any one of the respective eight channels available through an analog mux. In the cascaded

mode, the autosequencer functions as a single 16-channel sequencer. On each sequencer, once the

conversion is complete, the selected channel value is stored in its respective RESULT register. Autosequencing

allows the system to convert the same channel multiple times, allowing the user to perform oversampling

algorithms. This gives increased resolution over traditional single-sampled conversion results.

SYSCLKOUT

C28x

Low-Power

Modes Block

System

Control Block

High-Speed

Prescaler

PRODUCT PREVIEW

HALT

Analog

MUX

ADCIN00

S/H

ADCIN07

ADCENCLK

HSPCLK

Result Registers

Result Reg 0

Result Reg 1

70A8h

12-Bit

ADC

Module

ADCIN08

S/H

ADCIN15

Result Reg 7

Result Reg 8

70AFh

70B0h

Result Reg 15

70B7h

ADC Control Registers

S/W

EVA

ADCSOC

SOC

Sequencer 1

Sequencer 2

SOC

S/W

EVB

Figure 15. Block Diagram of the F2810 and F2812 ADC Module

POST OFFICE BOX 1443

鈥?/div>

HOUSTON, TEXAS 77251鈥?443

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