ak4642e AKM Semiconductor, Inc., ak4642e Datasheet - Page 16

• Manufacturer Part Number: ak4642e
• Description: Stereo Codec With Mic/hp/spk-amp
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
Parameter
PLL Slave Mode (PLL Reference Clock = LRCK pin)
PLL Slave Mode (PLL Reference Clock = BICK pin)
External Slave Mode
Audio Interface Timing
Note 34. BICK rising edge must not occur at the same time as LRCK edge.
MS0420-E-00
LRCK Input Timing
BICK Input Timing
LRCK Input Timing
BICK Input Timing
MCKI Input Timing
LRCK Input Timing
BICK Input Timing
Master Mode
Slave Mode
Frequency
Duty
Period
Pulse Width Low
Pulse Width High
Frequency
Duty
Period
Pulse Width Low
Pulse Width High
Frequency
Pulse Width Low
Pulse Width High
Frequency
Duty
Period
Pulse Width Low
Pulse Width High
BICK “↓” to LRCK Edge (Note 34)
LRCK Edge to SDTO (MSB)
BICK “↓” to SDTO
SDTI Hold Time
SDTI Setup Time
LRCK Edge to BICK “↑” (Note 34)
BICK “↑” to LRCK Edge (Note 34)
LRCK Edge to SDTO (MSB)
BICK “↓” to SDTO
SDTI Hold Time
SDTI Setup Time
(Except I
(Except I
PLL3-0 bits = “0010”
PLL3-0 bits = “0011”
256fs
512fs
1024fs
256fs
512fs
1024fs
2
2
S mode)
S mode)
Symbol
tBCKH
tBCKH
tBCKH
tMBLR
tBCKL
tBCKL
tCLKL
tCLKH
tBCKL
tBCK
tBCK
tBCK
fCLK
fCLK
fCLK
tBCK
tLRD
tSDH
tLRD
tSDH
tBSD
tLRB
tBLR
tBSD
tSDS
tSDS
Duty
Duty
Duty
- 16 -
fs
fs
fs
fs
fs
0.4 x tBCK
0.4 x tBCK
0.4/fCLK
0.4/fCLK
1/(64fs)
1.8816
3.7632
7.5264
312.5
7.35
7.35
7.35
7.35
7.35
min
240
240
130
130
−40
−70
−70
45
45
45
50
50
50
50
50
50
-
-
-
-
1/(32fs)
1/(64fs)
typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1/(32fs)
12.288
13.312
13.312
max
48
55
48
55
48
26
13
55
40
70
70
80
80
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[AK4642EN]
2005/09
Units
MHz
MHz
MHz
kHz
kHz
kHz
kHz
kHz
%
ns
ns
ns
%
ns
ns
ns
ns
ns
ns
%
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns