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AK4141 Datasheet, PDF (12/96 Pages) Asahi Kasei Microsystems – NICAM/A2/EIA-J Digital Stereo Decoder | |||
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[AK4141]
ã¹ã¤ããã³ã°ç¹æ§ (Continued)
(Ta=-20ï¾ 85ï°C; AVDD= 3.0~3.6V, DVDD=1.7~1.9V TVDD=1.7~3.6V; GND1=GND2=GND3=GND4=GND5=0V;
CL=20pF; unless otherwise specified)
Parameter (Note 7)
Symbol
min
typ
max
Unit
Audio Interface Timing (Master mode)
Normal mode (TDM=â0â)
SCLK Frequency
SCLK Duty
SCLK âï¯â to LRCK
SCLK âï¯â to SDTO
fBCK
64fs
Hz
dBCK
50
%
tMBLR
ï20
20
ns
tBSD
ï40
40
ns
TDM256 mode (TDM=â1â)
SCLK Frequency
fBCK
256fs
Hz
SCLK Duty
(Note 11) dBCK
50
%
SCLK âï¯â to LRCK
tMBLR
ï12
12
ns
SCLK âï¯â to SDTO
tBSD
ï20
20
ns
TDMIN Hold Time
tSDH
10
ns
TDMIN Setup Time
tSDS
10
ns
Power-Down & Reset Timing
PDN Pulse Width
(Note 12) tPD
150
ns
Note 7. I2Sãã©ã¼ãããæ㯠âLâ time
Note 8. ç¹è¨ãªãå ´åã¯SCLK= SCLK/SCLK4/SCLK5, LRCK= SCLK/LRCK4/LRCK5
Note 9. ãã®è¦æ ¼å¤ã¯LRCKã®ã¨ãã¸ã¨BICKã®âïâãéãªããªãããã«è¦å®ãã¦ãã¾ãã
Note 10. SCLK= SCLK4/SCLK5, LRCK= LRCK4/LRCK5.
Note 11. fs=48kHz,44.1kHzã®å ´åãfs=32kHzã®å ´åã¯ãL=(5/9x100)%, H=(4/9x100)% (typ)ã«ãªãã¾ãã
Note 12. AK4141ã¯PDN pin = âLâã§ãªã»ããããã¾ãã
Parameter
Symbol
min
typ
max
Unit
Control Interface Timing (I2C Bus):
SCL Clock Frequency
fSCL
-
400
kHz
Bus Free Time Between Transmissions
tBUF
1.3
-
ïs
Start Condition Hold Time
tHD:STA
0.6
-
ïs
(prior to first clock pulse)
Clock Low Time
tLOW
1.3
-
ïs
Clock High Time
tHIGH
0.6
-
ïs
Setup Time for Repeated Start Condition
tSU:STA
0.6
-
ïs
SDA Hold Time from SCL Falling (Note 13) tHD:DAT
0
0.9
ïs
SDA Setup Time from SCL Rising
tSU:DAT
0.1
-
ïs
Rise Time of Both SDA and SCL Lines
tR
-
0.3
ïs
Fall Time of Both SDA and SCL Lines
tF
-
0.3
ïs
Setup Time for Stop Condition
tSU:STO
0.6
-
ïs
Pulse Width of Spike Noise
tSP
0
50
ns
Suppressed by Input Filter
Capacitive load on bus
Cb
0
400
pF
Note 13. ãã¼ã¿ã¯æä½300ns (SCLã®ç«ã¡ä¸ããæé) ã®éä¿æãããªããã°ãªãã¾ããã
Note 14. I2Cã¯Philips Semiconductorsã®ç»é²åæ¨ã§ãã
MS0952-J-03
- 12 -
2013/12
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