CS5376A_08 datasheet(7/106 Pages) CIRRUS

Part #	CS5376A

Description	Low-power, Multi-channel Decimation Filter

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Manufacturer	CIRRUS [Cirrus Logic]

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CS5376A

DS612F4

7

1. GENERAL DESCRIPTION

The CS5376A is a multi-channel digital filter with

integrated system peripherals. Figure 1 illustrates a

simplified block diagram of the CS5376A.

1.1 Digital Filter Features

•

Multi-channel

decimation

filter

for

CS5371A/72A

∆Σ modulators.

-

1, 2, 3, or 4 channel concurrent operation.

•

Synchronous operation for simultaneous sam-

pling in multi-sensor systems.

-

Internal synchronization of digital filter

phase to an external SYNC signal.

•

Multiple 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 are programmable

to create a custom filter response.

•

Digital gain correction.

-

Individual channel gain correction to nor-

malize signal amplitudes.

Figure 1. CS5376A Block Diagram

SCK1

Serial Data Output Port

Decimation and

Filtering Engine

Modulator Data

Interface

Test Bit Stream Controller

Clock and

Synchronization

TBSCLK

TBSDATA

SPI 1

Serial Peripheral Interface 1

JTAG

Interface

Time Break Controller

SPI 2

Serial Peripheral Interface 2

GPIO

General Purpose I/O

SYNC

CLK

MCLK

MSYNC

TIMEB

MISO

MOSI

SSI

SINT

SCK2

SO

SI1

SI2

SI3

SI4

GPIO11:EECS

GPIO10

GPIO9

GPIO8

GPIO7

GPIO6

GPIO5

GPIO4:CS4

GPIO3:CS3

GPIO2:CS2

GPIO1:CS1

GPIO0:CS0

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CS5376A Datasheet(PDF) 7 Page - Cirrus Logic

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