MSP430FR6007 datasheet(71/179 Pages) TI1

部品番号	MSP430FR6007

部品情報	MSP430FR600x Ultrasonic Sensing MSP430??Microcontrollers for Water?멝etering Applications

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PGA

V

OUT

PVSS

PLL

USSXT

PVCC

PPG

MOD

USSXTIN USSXTOUT

DTC

RAM

(shared with LEA)

UUPS

ASQ

PLL_CLK

USS Module

PVSS

CH0_OUT

CH1_OUT

CH0_IN

CH1_IN

OSC

USSXT_BOUT

SDHS

SAPH

HSPLL

MSP430FRxxxx

PHY

Filter

71

MSP430FR6007, MSP430FR6005

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SLASEV3 – MARCH 2020

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Detailed Description

Figure 6-1. USS Subsystem Block Diagram

6.4

Low-Energy Accelerator (LEA) for Signal Processing

The LEA is a hardware engine designed for operations that involve vector-based signal processing, such

as FIR, IIR, and FFT. The LEA offers fast performance and low energy consumption when performing

vector-based digital signal processing computations. For performance benchmarks comparing LEA to

using the CPU or other processors, see Benchmarking the Signal Processing Capabilities of the Low-

Energy Accelerator.

The LEA requires MCLK to be operational; therefore, LEA operates only in active mode or LPM0. While

the LEA is running, the LEA data operations are performed on a shared 4KB of RAM out of the 8KB of

total RAM (see Table 6-45). This shared RAM can also be used by the regular application. The MSP CPU

and the LEA can run simultaneously and independently unless they access the same system RAM.

Direct access to LEA registers is not supported, and TI offers the optimized Digital Signal Processing

(DSP) Library for MSP Microcontrollers for the operations that the LEA module supports.

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