參數(shù)資料
型號: SAA2520
廠商: NXP Semiconductors N.V.
元件分類: Codec
英文描述: Stereo filter and codec for MPEG layer 1 audio applications
中文描述: 過濾器和立體聲的MPEG編解碼器1層音頻應(yīng)用
文件頁數(shù): 13/36頁
文件大?。?/td> 151K
代理商: SAA2520
August 1993
13
Philips Semiconductors
Preliminary specification
Stereo filter and codec for MPEG layer 1
audio applications
SAA2520
Fig.11 Filtered I
2
S interface timing (master mode - FS256, SCL and SWS are input).
MEA642 - 3
SWS, SDA, FDAF, FDAC, FSYNC
output
T
tfH
fL
t
td1
td1
tsL
tsH
Tc
FS256
th2
td2
SCL
SDA, FDAF, FDAC
input
th1
tsu
Notes to Fig.11
T
FS256 cycle time (f
s
= 48 kHz)
FS256 cycle time (f
s
= 44.1 kHz)
FS256 cycle time (f
s
= 32 kHz)
SCL cycle time
FS256 HIGH time (f
s
= 48 kHz)
FS256 HIGH time (f
s
= 44.1 kHz)
FS256 HIGH time (f
s
= 32 kHz)
FS256 LOW time (f
s
= 48 kHz)
FS256 LOW time (f
s
= 44.1 kHz)
FS256 LOW time (f
s
= 32 kHz)
SCL HIGH time
SCL LOW time
SDA, FDAF, FDAC input set-up
before FS256 HIGH
SDA, FDAF, FDAC input hold
after FS256 HIGH
SDA, FDAF, FDAC output hold
after FS256 HIGH
FS256 HIGH to SCL, SWS,
SDA, FDAF, FDAC output valid
81.4 ns nominal
88.6 ns nominal
122.1 ns nominal
4T ns nominal
35 ns
38 ns
35 ns
35 ns
38 ns
75 ns
2T - 20 ns
2T - 20 ns
T
c
t
fH
t
fL
t
SH
t
SL
t
S
20 ns
t
H1
30 ns
t
H2
0 ns
t
D1, 2
50 ns
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