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AK4953A Datasheet, PDF (17/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/HP/SPK-AMP
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[AK4953A]
Parameter
Symbol min
typ
Audio Interface Timing
Master Mode
BICK “↓” to LRCK Edge (Note 31)
LRCK Edge to SDTO (MSB)
(Except I2S mode)
BICK “↓” to SDTO
SDTI Hold Time
SDTI Setup Time
tMBLR
−20
-
tLRD
−35
-
tBSD
−35
-
tSDH
25
-
tSDS
20
-
Slave Mode
LRCK Edge to BICK “↑” (Note 31)
BICK “↑” to LRCK Edge (Note 31)
LRCK Edge to SDTO (MSB)
(Except I2S mode)
BICK “↓” to SDTO
SDTI Hold Time
SDTI Setup Time
tLRB
25
-
tBLR
25
-
tLRD
-
-
tBSD
-
-
tSDH
25
-
tSDS
20
-
Control Interface Timing (3-wire Mode):
CCLK Period
tCCK
200
-
CCLK Pulse Width Low
tCCKL
80
-
Pulse Width High
tCCKH
80
-
CDTIO Setup Time
tCDS
40
-
CDTIO Hold Time
tCDH
40
-
CSN “H” Time
tCSW
150
-
CSN Edge to CCLK “↑” (Note 32)
tCSS
50
-
CCLK “↑” to CSN Edge (Note 32)
tCSH
50
-
CCLK “↓” to CDTIO (at Read Command)
tDCD
-
-
CSN “↑” to CDTIO (Hi-Z) (at Read Command)(Note 34) tCCZ
-
-
Control Interface Timing (I2C Bus Mode):
SCL Clock Frequency
fSCL
-
-
Bus Free Time Between Transmissions
tBUF
1.3
-
Start Condition Hold Time (prior to first clock pulse)
tHD:STA 0.6
-
Clock Low Time
tLOW
1.3
-
Clock High Time
tHIGH
0.6
-
Setup Time for Repeated Start Condition
tSU:STA 0.6
-
SDA Hold Time from SCL Falling (Note 35)
tHD:DAT
0
-
SDA Setup Time from SCL Rising
tSU:DAT 0.1
-
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 0.6
-
Capacitive Load on Bus
Cb
-
-
Pulse Width of Spike Noise Suppressed by Input Filter
tSP
0
-
Note 31. BICK rising edge must not occur at the same time as LRCK edge.
Note 32. CCLK rising edge must not occur at the same time as CSN edge.
Note 33. I2C-bus is a trademark of NXP B.V.
Note 34. RL=1kΩ/10% change (pull-up or TVDD)
Note 35. Data must be held for sufficient time to bridge the 300 ns transition time of SCL.
max Units
20
ns
35
ns
35
ns
-
ns
-
ns
-
ns
-
ns
45
ns
45
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
-
ns
70
ns
70
ns
400
kHz
-
μs
-
μs
-
μs
-
μs
-
μs
-
μs
-
μs
0.3
μs
0.3
μs
-
μs
400
pF
50
ns
MS1252-E-00
- 17 -
2010/10
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