CS5376 查看數據表（PDF） - Cirrus Logic

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CS5376

Low Power Multi-Channel Decimation Filter

Cirrus Logic 

CS5376

EEPROM Command

Nop

Write I/O Register

Write FIR Coefficients

Write IIR Coefficients

Command Opcode

0x00

0x01

0x02

0x03

Data Format1

--

Address

Write Data

Num FIR1 Coeff

Num FIR2 Coeff

(FIR Coeff)

(IIR Coeff)

Write ROM Coefficients

Write TBS Data

0x04

0x05

--

Num TBS Data

(TBS Data)

Write ROM TBS Data

0x06

--

Filter Start

0x07

--

1 (data) indicates multiple data words of this type to be written.

Figure 12. EEPROM Boot Loader Commands

Write FIR Coefficients - 0x02

Type

CMD

DATA

DATA

DATA

Description

0x02 - FIR Coefficient Write Cmd

Number of FIR1 Coefficients

Number of FIR2 Coefficients

(FIR Coefficients)

This EEPROM command writes custom coeffi-

cients for the FIR1 and FIR2 filters. The first two

data words set the number of FIR1 and FIR2 coef-

ficients to be written. The remaining data words are

the concatenated FIR1 and FIR2 coefficients.

A maximum of 255 coefficients can be written for

each FIR filter, though the available decimation en-

gine computation cycles will limit their practical

size. See “FIR Filters” on page 60 for more infor-

mation about the FIR filters and the cycle limita-

tions of the decimation engine.

DS256PP1

24

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