|
AK4634EN Datasheet, PDF (12/94 Pages) Asahi Kasei Microsystems – 16-Bit Mono CODEC with ALC & MIC/SPK -AMP | |||
|
◁ |
[AK4634]
SWITING CHARACTERISTICS
(Ta = Tmin ~ Tmax; AVDD = 2.8 ï¾ 3.6V, DVDD = 1.6 ï¾ 3.6V, SVDD = 2.2 ï¾ 4.0V; CL = 20pF)
Parameter
Symbol
min
typ
max
PLL Master Mode (PLL Reference Clock = MCKI pin) (Figure 2)
MCKI Input: Frequency
fCLK
11.2896
-
27.0
Pulse Width Low
tCLKL
0.4/fCLK
-
-
Pulse Width High
tCLKH
0.4/fCLK
-
-
MCKO Output:
Frequency
fMCK
-
256 x fFCK
-
Duty Cycle except fs=29.4kHz, 32kHz
dMCK
40
50
60
fs =29.4kHz, 32kHz (Note 20) dMCK
-
33
-
FCK Output: Frequency
fFCK
8
-
48
Pulse width High
(DIF1-0 bits = â00â and FCKO bit = â1â) tFCKH
-
tBCK
-
Duty Cycle
(DIF1-0 bits = â00â or FCKO bit = â0â)
dFCK
-
50
-
BICK: Period (BCKO1-0 = â00â)
tBCK
-
1/16fFCK
-
(BCKO1-0 = â01â)
tBCK
-
1/32fFCK
-
(BCKO1-0 = â10â)
tBCK
-
1/64fFCK
-
Duty Cycle
dBCK
-
50
-
Audio Interface Timing
DSP Mode: (Figure 3, Figure 4)
FCK âïâ to BICK âïâ (Note 21)
tDBF 0.5 x tBCK ï40 0.5 x tBCK 0.5 x tBCK + 40
FCK âïâ to BICK âï¯â (Note 22)
tDBF 0.5 x tBCK ï40 0.5 x tBCK 0.5 x tBCK +40
BICK âïâ to SDTO (BCKP = â0â)
tBSD
-70
-
70
BICK âï¯â to SDTO (BCKP = â1â)
tBSD
-70
-
70
SDTI Hold Time
tSDH
50
-
-
SDTI Setup Time
tSDS
50
-
-
Except DSP Mode: (Figure 5)
BICK âï¯â to FCK Edge
tBFCK
ï40
-
40
FCK to SDTO (MSB)
tFSD
ï70
-
70
(Except I2S mode)
BICK âï¯â to SDTO
tBSD
ï70
-
70
SDTI Hold Time
tSDH
50
-
-
SDTI Setup Time
tSDS
50
-
-
Unit
MHz
ns
ns
kHz
%
%
kHz
ns
%
ns
ns
ns
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MS0686-E-03
- 12 -
2014/10
|
▷ |