CS5378-IS Просмотр технического описания (PDF) - Cirrus Logic

Номер в каталоге

Компоненты Описание

Список матч

CS5378-IS

Low-power Single-channel Decimation Filter

Cirrus Logic 

CS5378

Serial Interface

Decimation and

Filtering Engine

Modulator Data Interface

PLL, Clock Generation

Reset, Synchronization

Time Break Controller

Test Bit Stream

Controller

GPIO

General Purpose I/O

CLK

MCLK

RESET

SYNC

MSYNC

TIMEB

TBSDATA

GPIO7:BOOT

GPIO6:PLL2

GPIO5:PLL1

GPIO4:PLL0

GPIO3

GPIO2

GPIO1

GPIO0

Figure 1. CS5378 Block Diagram

1. GENERAL DESCRIPTION

The CS5378 is a single channel digital filter with

integrated system peripherals. Figure 1 illustrates a

simplified block diagram of the CS5378.

1.1 Digital Filter Features

• Single channel decimation filter for CS5373A

∆Σ modulator.

• Synchronous operation for simultaneous sam-

pling in multi-sensor systems.

- Internal synchronization of digital filter

phase to an external SYNC signal.

• Output word rates, including low bandwidth

rates.

- Standard output rates: 4000, 2000, 1000,

500, 333, 250 SPS.

- Low bandwidth rates: 200, 125, 100, 50,

40, 25, 20, 10, 5, 1 SPS.

• Flexible digital filter configuration. (See Figure

2)

- Cascaded SINC, FIR, and IIR filters with

selectable output stage.

- Linear and minimum phase FIR low-pass

filter coefficients included.

- 3 Hz Butterworth IIR high-pass filter coef-

ficients included.

- FIR and IIR coefficients programmable to

create a custom filter response.

• Digital gain correction to normalize sensor

gain.

• Digital offset correction and calibration.

- Offset correction to remove measurement

DS639F2

6

Share Link: