AK4685 AKM [Asahi Kasei Microsystems], AK4685 Datasheet - Page 14

• Manufacturer Part Number: AK4685
• Description: Multi-channel CODEC with Differential Analog I/O
• Manufacturer: AKM [Asahi Kasei Microsystems]

Note 23. MCB supports only normal mode (256fsn, 384fsn, 512fsn, 768fsn).
Note 24. BICKA/B/C rising edge must not occur at the same time as LRCKA/B/C/ edge.
Note 25. Data must be held long enough to bridge the 300ns-transition time of SCL.
Note 26. I
Note 27. The AK4685 is reset by bringing the PND pin = “L”.
Note 28. This is the number of LRCKB rising from PDN rising.
MS1106-E-00
Parameter
Audio Interface Timing (Slave Mode)
PORTA, C
PORTB
Audio Interface Timing (Master Mode)
Control Interface Timing (I
Power-down & Reset Timing
BICKA,C Period
BICKA,C Pulse Width Low
LRCKA,C Edge to BICKA “↑”
BICKA,C “↑” to LRCKA Edge
SDTIA,C Hold Time
SDTIA,C Setup Time
BICKB Period
BICKB Pulse Width Low
LRCKB Edge to BICKB “↑”
BICKB “↑” to LRCKB Edge
LRCKB to SDTOB1,2 (MSB)
BICKB “↓” to SDTOB1,2
BICKB Frequency
BICKB Duty
BICKB “↓” to LRCKB Edge
BICKB “↓” to SDTO
SCL Clock Frequency
Bus Free Time Between Transmissions
Start Condition Hold Time
Clock Low Time
Clock High Time
Setup Time for Repeated Start Condition
SDA Hold Time from SCL Falling
SDA Setup Time from SCL Rising
Rise Time of Both SDA and SCL Lines
Fall Time of Both SDA and SCL Lines
Setup Time for Stop Condition
Pulse Width of Spike Noise Suppressed by Input Filter
Capacitive load on bus
PDN Pulse Width
PDN “↑” to SDTOB1,2 valid
(prior to first clock pulse)
Pulse Width High
Pulse Width High
2
C-bud is a trademark of NXP B.V.
(Note
2
C Bus):
(Note
(Note
27)
(Note
(Note
(Note 28)
(Note
24)
24)
24)
24)
25)
- 14 -
tHD:DAT
tHD:STA
tSU:DAT
tSU:STA
tSU:STO
Symbol
tBCKH
tBCKH
tMBLR
tBCKL
tBCKL
tHIGH
dBCK
tLOW
fBCK
tBCK
tSDH
tBCK
tPDV
tLRB
tBLR
tLRB
tBLR
tBSD
tBSD
fSCL
tBUF
tSDS
tLRS
tPD
tSP
Cb
tR
tF
min
150
324
128
128
-40
1.3
0.6
1.3
0.6
0.6
0.1
0.6
81
32
32
20
20
10
10
80
80
0
0
-
-
-
-
64fs
522
typ
50
max
400
400
0.3
0.3
80
80
40
20
50
-
-
-
-
-
-
-
-
[AK4685]
2009/08
Units
kHz
1/fs
Hz
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
μs
μs
μs
μs
μs
μs
μs
μs
μs
ns
%
ns