AK4683_07 Datasheet, PDF (12/84 Pages) Asahi Kasei Microsystems – Asynchronous Multi-Channel Audio CODEC with DIR/T

[AK4683]
SWITCHING CHARACTERISTICS
(Ta=25°C; AVDD1, AVDD2, DVDD, PVDD, HVDD=4.5∼5.5V; TVDD=2.7∼5.5V; C_L=20pF; Note 18)
Parameter
Symbol
min
typ
max
Master Clock Timing
Crystal Resonator Frequency
fXTAL
11.2896
24.576
External Clock
Frequency
fECLK
4.096
24.576
Duty
dECLK
40
50
60
MCKO Output
Frequency
fMCK
4.096
24.576
Duty
(Note 19) dMCLK
40
50
60
(Note 20) dMCK
33
PLL Clock Recover Frequency (RX0-3)
fpll
32
-
192
Master Clock
256fsn, 128fsd:
fCLK
8.192
12.288
Pulse Width Low
tCLKL
27
Pulse Width High
tCLKH
27
384fsn, 192fsd:
fCLK
12.288
18.432
Pulse Width Low
tCLKL
20
Pulse Width High
tCLKH
20
512fsn, 256fsd, 128fsq:
fCLK
16.384
24.576
Pulse Width Low
tCLKL
15
Pulse Width High
tCLKH
15
LRCKA (LRCKB) Timing (Slave Mode)
Normal mode
Normal Speed Mode
Double Speed Mode
Quad Speed Mode
Duty Cycle
TDM 256 mode
LRCKA frequency
“H” time
“L” time
TDM 128 mode
LRCKA frequency
“H” time
“L” time
LRCKA (LRCKB) Timing (Master Mode)
Normal mode
Normal Speed Mode
Double Speed Mode
Quad Speed Mode
Duty Cycle
TDM 256 mode
LRCKA frequency
“H” time
(Note 21)
TDM 128 mode
LRCKA frequency
“H” time
(Note 21)
Power-down & Reset Timing
PDN Pulse Width
PDN “↑” to SDTO valid
(Note 22)
(Note 23)
fsn
fsd
fsq
Duty
fsd
tLRH
tLRL
fsd
tLRH
tLRL
fsn
fsd
fsq
Duty
fsn
tLRH
fsd
tLRH
tPD
tPDV
32
48
64
96
120
192
45
55
32
48
1/256fs
1/256fs
64
96
1/128fs
1/128fs
32
48
64
96
120
192
50
32
48
1/8fs
64
96
1/4fs
150
522
Note 18. SDTOA is specified against OLRCKA, SDTIA1-3 are measured against ILRCKA.
Note 19. When MCKO1-0 bits = “01”, “10” or MCKO1-0 bits = “00” and CKSDT bit = “0”.
Note 20. When MCKO1-0 bits = “00” and CKSDT bit = “1” and the EXTCLK is selected by CM1-0 bits.
Duty = (“H” width) / (clock cycle) x 100
Note 21. “L” time at I²S format
Note 22. The AK4683 can be reset by bringing PDN “L” to “H” upon power-up.
Note 23. These cycles are the number of LRCKA (LRCKB) rising from PDN rising.
Units
MHz
MHz
%
MHz
%
%
kHz
MHz
ns
ns
MHz
ns
ns
MHz
ns
ns
kHz
kHz
kHz
%
kHz
ns
ns
kHz
ns
ns
kHz
kHz
kHz
%
kHz
ns
kHz
ns
ns
1/fs
MS0427-E-02
- 12 -
2007/04