MAS3587F Micronas, MAS3587F Datasheet - Page 36

• Manufacturer Part Number: MAS3587F
• Description: MPEG Layer 3 Audio Encoder/Decoder
• Manufacturer: Micronas

MAS 3587F
Table 3–7: D0 Control Memory Cells
36
Memory
Address
(hex)
D0:7f1
(continued)
D0:7f2
Function
Main I/O Control, continued
bit[1]
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]
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.
Interface Status Control (reset = 05
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]
bit[5]
Note that S/PDIF audio output is only available for MPEG 1 (sampling fre-
quencies 32, 44.1 and 48 kHz)
bit[4]
bit[3]
bit[2]
bit[1]
bit[0]
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.
Enable/disable external serial data input SDI
Decoder:
0 (reset)
1
Encoder: SDI Word Strobe Invert
0 (reset)
1
Validate
0 (reset)
1
S/PDIF input selection
0 (reset)
1
Enable/disable S/PDIF output
0 (reset)
1
Reserved, must be set to zero
Enable/disable serial data output SDO
0
1 (reset)
Output clock characteristic (SDO and S/PDIF outputs)
0
1 (reset)
reserved, must be set to zero
0
1 (reset)
DEMAND MODE (PLL off, MAS 3587F is clock
master)
BROADCAST MODE (PLL on, clock of MAS 3587F
locks on data stream)
do not invert
invert incoming word strobe signal
changes in control memory will be ignored
changes in control memory will become effective
select S/PDIF input 1
select S/PDIF input 2
enable S/PDIF output
S/PDIF output off (tristate)
SDO on
SDO off
low impedance
high impedance
use external audio source (SDI)
use internal A/D converter as audio source
hex
)
All
ADVANCE INFORMATION
Name
InterfaceControl
Micronas