MAS3549F datasheet(45/92 Pages) MICRONAS

부품명	MAS3549F

상세설명	MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec

PDF	92 Pages

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제조업체	MICRONAS [Micronas]

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45 / 92 page

DATA SHEET

MAS 35x9F

Micronas

June 30, 2004; 6251-505-1DS

3.4. Audio Codec Access Protocol

The MAS 35x9F has 16-bit wide registers for the con-

trol of the audio codec. These registers are accessed

via the I2C subaddresses codec_write (6Chex) and

codec_read (6Dhex).

3.4.1. Write Codec Register

The controller writes the 16-bit value (

d = d3,d2,d1,d0)

into the MAS 35x9F codec register (

r = r3,r2,r1,r0). A

list of registers is given in Table 3–16.

Example: Writing the value 1234hex into the codec reg-

ister with the number 00 1Bhex:

3.4.2. Read Codec Register

Reading the codec registers also needs a set-up for

the register address and an additional start condition

during the actual read cycle. A list of status registers is

given in Table 3–17.

codec_write

r3,r2

r1,r0

d3,d2

d1,d0

1) send command

2) get register value

SDW

codec_write

r3,r2

r1,r0

codec_read

d3,d2

d1,d0

MAS3549F 데이터시트(PDF) 45 Page - Micronas