AK4561 Datasheet, PDF (12/48 Pages) Asahi Kasei Microsystems – 16bit CODEC with built-in ALC and MIC/HP-Amp

ASAHI KASEI
AKM CONFIDENTIAL
[AK4561]
SWITCHING CHARACTERISTICS
(Ta=25°C; VA=VD=2.6 ∼ 3.3V; VT=1.8 ∼ 3.3V; C_L=20pF)
Parameter
Symbol
min
Control Clock Frequency
Master Clock(MCLK) 256fs: Frequency
fCLK
2.048
Pulse Width Low
tCLKL
28
Pulse Width High
tCLKH
28
384fs: Frequency
fCLK
3.072
Pulse Width Low
tCLKL
23
Pulse Width High
tCLKH
23
Channel Select Clock (LRCK): Frequency
fs
8
Duty
Duty
45
Audio Interface Timing
BCLK Period
tBLK
312.5
BCLK Pulse Width Low
tBLKL
130
Pulse Width High
tBLKH
130
LRCK Edge to BCLK “↑” (Note 30)
BCLK “↑” to LRCK Edge (Note 30)
tLRB
50
tBLR
50
LRCK to SDTO(MSB) Delay Time
tLRM
BCLK “↓” to SDTO Delay Time
tBSD
SDTI Latch Hold Time
tSDH
50
SDTI Latch Set up Time
tSDS
50
Control Interface Timing
CCLK Period
tCCK
200
CCLK Pulse Width Low
tCCKL
80
Pulse Width High
tCCKH
80
CDTI Latch Set Up Time
tCDS
50
CDTI Latch Hold Time
tCDH
50
CS “H” Time
tCSW
150
CS ”↓” to CCLK “↑”
CCLK “↑” to CS “↑”
tCSS
50
tCSH
50
Reset Timing
PD Pulse Width
tPDW
150
PD “↑” to SDTO Delay Time (Note 31)
tPDV
Note 30. BCLK rising edge must not occur at the same time as LRCK edge.
Note 31. These cycles are the numbers of LRCK rising from PDN pin rising.
typ
12.288
18.432
48
50
8224
max
Units
12.8
MHz
ns
ns
19.2
MHz
ns
ns
50
kHz
55
%
ns
ns
ns
ns
ns
80
ns
80
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1/fs
Rev. 0.9
- 12 -
2000/09