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PDF MAS3506D Data sheet ( Hoja de datos )
| Número de pieza | MAS3506D | |
| Descripción | WorlDSPace Broadcast Channel Audio Decoder | |
| Fabricantes | Micronas Intermetall | |
| Logotipo |  |
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MICRONAS
PRELIMINARY DATA SHEET
MAS 3506D
WorldSpace
Broadcast Channel
Audio Decoder
Edition July 25, 2001
6251-433-1PD
MICRONAS
1 page  
PRELIMINARY DATA SHEET
MAS 3506D
The complete WorldSpace Broadcast Channel (BC) is
available as a serial output signal from the DRD 3515A
and provides full access to all WorldSpace data. The
additional Service Component (SC) output of the
DRD 3515A may be useful in applications where a
data and an audio channel are transmitted simulta-
neously. In this case, the data component is directed
to the SC output. This function is independent from the
audio Service Component extraction in the
MAS 3506D.
Service Control Header data are available via I2C con-
troller interface from the MAS 3506D. (N.B. The Time
Slot Control Channel data are available only from the
DRD 3515A.)
14.725 MHz RCLK
24.576 MHz OCLK
Clock
Synthe-
sizer
I2C
Interface
to µC
BC in
Serial
Input
Interface
Audio
Data out
Serial
Output
Interface
Service Component
Extraction from Broadcast Channel
MPEG 1/2/2.5 Layer 3
Audio Decoding
Buffer-Controlled Loop
20-Bit RISC DSP
Fig. 1–2: Block diagram of the MAS 3506D
Parallel
Interface
DC/DC
Converter
VDD
Micronas
5
5 Page 
PRELIMINARY DATA SHEET
2.5.2. Parallel Input Output Interface (PIO)
The parallel interface of the MAS 3506D consists of
the lines PI0..PI4, PI8, PI12..PI19:
Table 2–2: PIO input and output pin assignment
during MPEG decoding
PIO Name
Pin
Comment
PI19
(O)
BC-FRAME-TOGGLE
0
1
Output level tog-
gled each BC-
FRAME
PI18
(I)
BCINENABLE
0
1
enables SI* inputs
enables SI inputs
PI13
(O)
BC-FRAME-SYNC
0
1
start of new frame
P12 BC-SYNC
(O) 0
1
unsynched
synched to BC
PI8 MPEG-CRC-ERROR
(O) 0
1
no error
CRC-error or sync
lost
PI4 MPEG-FRAME-SYNC
(O) 0
1
sync to a new
MPEG frame
PI3 AUD-SW
(I)
May be used to
monitor a signal
indicating switch-
ing between
Headphone and
Loudspeaker
mode.
PI2, Reserved
PI1,
PI0
(I)
The PI-pins may
be monitored by
reading the PIO
register (see
Table 3–10)
These signals are used to indicate the status of the
Broadcast Channel and the MPEG Layer 3 decoder.
The PIO pin status is also accessible via I2C interface
(see Table 3–10).
Micronas
MAS 3506D
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MAS3506D.PDF ] | |
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