MAS3587F Micronas, MAS3587F Datasheet - Page 38

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

MAS 3587F
Table 3–8: D0 Status Memory Cells
38
Memory
Address
D0:FD0
D0:FD1
Function
MPEG Frame Counter
bit[19:0]
The counter will be incremented with every new frame that is encoded/
decoded. With an invalid MPEG bit stream at its input while decoding (e.g. an
invalid header is detected), the MAS 3587F resets the MPEGFrameCount to
‘0’. In encoding mode, the counter is reset on audio data timeouts and after
restarting the encoder.
MPEG Header and Status Information
bit[15]
bit[14:13]
bit[12:11]
bit[10]
bit[9:2]
bit[1]
bit[0]
This location contains bits 15...11 of the original MPEG header and other sta-
tus bits. It will be set each frame directly after the header has been encoded/
decoded from the bit stream.
MPEG ID, Bits 12, 11 of the MPEG header
Bits 14 and 13 of the MPEG header
Invalid frame (decoding only)
number of MPEG frames after synchronization
00
01
10
11
00
01
10
11
CRC Protection
0
1
Reserved
CRC error (decoding only)
0
1
0
1
reserved, must be set to zero
MPEG 2.5 (decoding only)
reserved
MPEG 2
MPEG 1
reserved
Layer 3
Layer 2 (decoding only)
Layer 1 (decoding only)
bitstream protected by CRC
bitstream not protected by CRC
no CRC error
CRC error
no invalid frame
invalid frame
All
All
ADVANCE INFORMATION
Name
MPEGFrameCount
MPEGStatus1
Micronas