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MAS3587F датащи(PDF) 30 Page - Micronas

номер детали MAS3587F
подробное описание детали  Audio Encoder/Decoder
PDF  82 Pages
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производитель  MICRONAS [Micronas]
домашняя страница  http://www.micronas.com
Logo MICRONAS - Micronas

MAS3587F датащи(HTML) 30 Page - Micronas

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MAS 3587F
ADVANCE INFORMATION
30
Micronas
3.3.1.12. Clear SYNC Signal (Code 5hex)
After the successful decoding of an MPEG frame the signal at pin SYNC rises and thus generates an interrupt event
for the microcontroller. Issuing this command lets the signal at pin SYNC return to ’0’.
3.3.1.13. Default Read
The Default Read command is the fastest way to get information from the MAS 3587F. Executing the Default Read
in a polling loop can be used to detect a special state during decoding.
The Default Read command immediately returns the lower 16 bit content of a specific RAM location as defined by
the pointer D0:ffb. The pointer must be loaded before the first Default Read action occurs. If the MSB of the pointer
is set, the pointer refers to a memory location in D1 rather than to one in D0.
Example: For watching D1:123 the pointer D0:ffb must be loaded with 8123hex:
<DW 68 e0 00
write to D0 memory
00 01
1 word to write
0f fb
start address ffb
00 08
value = 8...
01 23>
...0123hex
Now Default Read commands can be issued as often as desired:
<DW 69 <DR
'HIDXOW5HDG command
dd dd>
16 bit content of the
address as defined by the
pointer
<DW 69 <DR dd dd>
... and do it again
S
DW
A
W
$68
A
W
5,0
A
0,0
A
W
P
S
DW
A
W
$69
A
W
S
DR
A
W
d3,d2
A
N
d1,d0
W
P



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