MAS3587F datasheet(36/82 Pages) MICRONAS

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MAS 3587F

ADVANCE INFORMATION

Micronas

D0:7f1

(continued)

Main I/O Control, continued

bit[1]

Decoder:

0 (reset)

DEMAND MODE (PLL off, MAS 3587F is clock

master)

BROADCAST MODE (PLL on, clock of MAS 3587F

locks on data stream)

Encoder: SDI Word Strobe Invert

0 (reset)

do not invert

invert incoming word strobe signal

Note: L/R channel swap is present today with the reset value. Correct value

for encoder is “1”. Correct default channel setting will be implemented in future

versions.

bit[0]

Validate

0 (reset)

changes in control memory will be ignored

changes in control memory will become effective

Bit[0] is reset after the DSP has recognized the changes. The controller

should set this bit after the other D0 control memory cells have been initialized

with the desired values.

D0:7f2

Interface Status Control (reset = 05hex)

All

This control cell allows to enable/disable the data I/O interfaces. In addition,

the clock of the output data interfaces, S/PDIF and SDO, can be set to a low-

impedance mode.

bit[6]

S/PDIF input selection

0 (reset)

select S/PDIF input 1

select S/PDIF input 2

bit[5]

Enable/disable S/PDIF output

0 (reset)

enable S/PDIF output

S/PDIF output off (tristate)

Note that S/PDIF audio output is only available for MPEG 1 (sampling fre-

quencies 32, 44.1 and 48 kHz)

bit[4]

Reserved, must be set to zero

bit[3]

Enable/disable serial data output SDO

0SDO on

1 (reset)

SDO off

bit[2]

Output clock characteristic (SDO and S/PDIF outputs)

low impedance

1 (reset)

high impedance

bit[1]

reserved, must be set to zero

bit[0]

Enable/disable external serial data input SDI

use external audio source (SDI)

1 (reset)

use internal A/D converter as audio source

Both digital outputs, S/PDIF and SPO, and the D/A converters may use the

outgoing audio independent of each other.

Changes at this memory address must be validated by setting bit [0] of D0:7f1.

InterfaceControl

Table 3–7: D0 Control Memory Cells

Memory

Address

(hex)

Function

Name

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