參數(shù)資料
型號： SAA2502
廠商： NXP Semiconductors N.V.
英文描述： ISO/MPEG Audio Source Decoder
中文描述： 的ISO / MPEG音頻信源解碼器
文件頁數(shù)： 42/64頁
文件大?。?/td> 318K
代理商： SAA2502
1997 Nov 17
42
Philips Semiconductors
Preliminary specification
ISO/MPEG Audio Source Decoder
SAA2502
7.6.6.9
Error report
The validity of bit allocation plus scale factor select information and the result of the scale factor CRCs (only when scale
factor CRCs are enabled) may be read from the error report register. The error report is only valid when status flag
INSYNC is set.
Table 50
Error report register: 1 byte (read-only, restricted type, local address = 24H)
Table 51
Explanation of bits in Table 50
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
BALOK
DECFM
undefined
undefined
SF3OK
SF2OK
SF1OK
SF0OK
BIT
DESCRIPTION
BALOK
bit allocation and scale factor select information validity indication:
logic 0; bit allocation or scale factor select information are incorrect or the CRC over
header plus bit allocation plus scale factor select information has failed
logic 1; bit allocation and scale factor select information are correct and CRC over
header plus bit allocation plus scale factor select information is correct or not active
frame skipping or frame decoding indication:
logic 0; current input data frame is skipped, and the corresponding baseband audio
output frame is muted due to input data errors or inconsistencies; audio frame
synchronization is maintained
logic 1; current frame is decoded normally
scale factor CRCs not enabled; bits are invalid
scale factor CRCs enabled:
logic 0; one or more scale factors have been concealed in sub-band block 0 to 3
logic 1; no scale factor concealment in sub-band block 0 to 3 (CRC check was OK)
block 0; sub-bands 0 to 3
block 1; sub-bands 4 to 7
block 2; sub-bands 8 to 15
block 3; sub-bands 16 to 31
DECFM
SF3OK to SF0OK
相關(guān)PDF資料
PDF描述
SAA2502H ISO/MPEG Audio Source Decoder
SAA2503 MPEG2 audio decoder(MPEG2 音頻譯碼器)
SAA2503HT MPEG2 audio decoder
SAA2505H-M1 Digital multi-channel audio IC DUET
SAA2505 Digital multi-channel audio IC DUET
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SAA2502H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ISO/MPEG Audio Source Decoder
SAA2503 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG2 audio decoder
SAA2503HT 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:MPEG2 audio decoder
SAA2505 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET
SAA2505H 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital multi-channel audio IC DUET
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