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AK4640_05 Datasheet, PDF (16/78 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ CODEC with MIC/HP/SPK-AMP | |||
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ASAHI KASEI
[AK4640]
Parameter
Symbol
min
Control Interface Timing (4-wire Serial mode):
CCLK Period
CCLK Pulse Width Low
Pulse Width High
CDTI Setup Time
CDTI Hold Time
CSN âHâ Time
CSN âââ to CCLK âââ
CCLK âââ to CSN âââ
CDTO Delay
CSN âââ to CDTO Hi-Z
Control Interface Timing (I2C Bus mode):
SCL Clock Frequency
tCCK
200
tCCKL
80
tCCKH
80
tCDS
40
tCDH
40
tCSW
150
tCSS
50
tCSH
50
tDCD
-
tCCZ
-
fSCL
-
Bus Free Time Between Transmissions
tBUF
4.7
Start Condition Hold Time (prior to first clock pulse) tHD:STA
4.0
Clock Low Time
tLOW
4.7
Clock High Time
tHIGH
4.0
Setup Time for Repeated Start Condition
tSU:STA
4.7
SDA Hold Time from SCL Falling
(Note 27) tHD:DAT
0
SDA Setup Time from SCL Rising
tSU:DAT 0.25
Rise Time of Both SDA and SCL Lines
tR
-
Fall Time of Both SDA and SCL Lines
tF
-
Setup Time for Stop Condition
tSU:STO
4.0
Pulse Width of Spike Noise Suppressed by Input Filter tSP
0
Reset Timing
PDN Pulse Width
PMADC âââ to SDTO valid
(Note 28)
tPD
150
(Note 29)
tPDV
-
typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2081
Note 27. Data must be held long enough to bridge the 300ns-transition time of SCL.
Note 28. The AK4640 can be reset by the PDN pin = âLâ.
Note 29. This is the count of LRCK âââ from the PMADC bit = â1â.
max
Units
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
50
ns
70
ns
100
kHz
-
µs
-
µs
-
µs
-
µs
-
µs
-
µs
-
µs
1.0
µs
0.3
µs
-
µs
50
ns
-
ns
-
1/fs
MS0273-E-02
- 16 -
2005/04
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