MAS3506D datasheet(28/52 Pages) MICRONAS

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MAS 3506D

PRELIMINARY DATA SHEET

Micronas

3.5.1. Volume Matrix

The digital baseband volume matrix is used for control-

ling the digital gain as shown in Fig. 3–2. Table 3–12

shows the proposed settings for the four volume matrix

coefficients for stereo, left, and right mono. The gain

factors are given in fixed point notation as desribed in

Section 3.3.1.

Fig. 3–2: Digital volume matrix

D1:7f6

continued

bit[1:0]

Emphasis

none

50/15 µs

reserved

CCITT J.17

D1:7f7

R/W

Configures the Serial Audio Output Interface

bit [19:0]

OutputConfig

generate 32-bit audio samples

generate 16-bit audio samples

OutputConfig

D1:7f8

R/W

Left ➔ Left Gain

bit [19:0]

left

→ left gain (please refer to Sections

3.3.1. and 3.5.1.)

80000

D1:7f9

R/W

Left ➔ Right Gain

bit [19:0]

left

→ right gain

00000

D1:7fa

R/W

Right ➔ Left Gain

bit [19:0]

right

→ left gain

00000

D1:7fb

R/W

Right ➔ Right Gain

bit [19:0]

right

→ right gain

80000

* Modes marked with an asterisk are not used in the WorldSpace system.

Table 3–11: Control and status memory cells, continued

Address

(hex)

R/W

Function

Default

Name

Table 3–12: Settings for the digital volume matrix

Memory lo-

cation (hex)

D1:

7f8

D1:

7f9

D1:

7fa

D1:

7fb

Name

Stereo

(default)

−1.0

Mono

left

−1.0

Mono

right

−1.0

−1

left audio

right audio

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