PRELIMINARY DATA SHEET
MAS 3507D
3.7.2.2. Output Configuration
Address
R/W Name
r/w OutputConfig
Function
Default
D0:$36f
Configuration of the I2S audio output interface
validate by ‘run $475’ command
The content of this memory cell depends on the start-
up configuration and will be set by the firmware. Never-
theless, the audio output interface is configurable by
the software to work in different 16 bit/sample modes
and 32 bit/sample modes (see Section 2.7.4. on
page 13). For adjusting to this, the following procedure
has to be done:
Table 3–18: Output Configuration
Bits
19...15
14
Value
Comment
%0000.0
don’t care
%0
%1
SOC standard tim-
ing
SOC inverted tim-
ing
– Choose the output mode (see Table 3–18).
– Write this value to the memory (D0:$36f).
– Send a ‘run $475’ command. With the jump to this
address, the settings in the memory will become
valid for the internal processing. This overrides all
start-up settings
13..12
11
%00.
don’t care
%0
%1
no delay
additional delay of
data related to word
strobe
3.7.3. Baseband Volume Matrix
10...6
5
%000.00
don’t care
Address R/W
Name Function
Default
$80000
$0
%0
%1
not invert
invert outgoing
word strobe signal
D1:$7f8
D1:$7f9
D1:$7fa
D1:$7fb
r/w
r/w
r/w
r/w
LL
Left->Left gain
LR
RL
RR
Left->Right gain
Right->Left gain
4
%0
%1
32 bits/sample
16 bits/sample
$0
Right->Right gain $80000
3...0
%0000
don’t care
The digital Baseband volume Matrix is used for con-
trolling the digital gain and a simple kind of stereo
basewidth enlargement as shown in Fig. 3–2. Table 3–
20 shows the proposed settings for the 4 volume
matrix coefficients for stereo, left and right mono. The
gain factors are given in fixed point notation. The gain
values may be written to the MAS 3507D by the con-
troller command ’write D1 memory’.
Table 3–19: Bit Assignment of the Volume Cells
Bits
Name Value
Comment
−524288/524288..524287/524288 = −1.0 .. 1.0 − 2^−19
19..0
LL/LR/RL/RR
Micronas
37
MICRONAS [ MICRONAS ]
