Switching Characteristics - Serial Audio Interface - Cirrus Logic CS4244 Manual

SWITCHING CHARACTERISTICS - SERIAL AUDIO INTERFACE

VA_SEL = 0 for VA = 3.3 VDC, 1 for VA = 5.0 VDC.
pin Low Pulse Width
RST
MCLK Frequency
MCLK Duty Cycle
SCLK Duty Cycle
Input Sample Rate (FS/LRCK pin)
SCLK Falling Edge to SDOUTx Valid (VL = 1.8 V)
SCLK Falling Edge to SDOUTx Valid (VL = 2.5 V)
SCLK Falling Edge to SDOUTx Valid (VL = 3.3 V or 5 V)
TDM Slave Mode
SCLK Frequency
FS/LRCK High Time Pulse
FS/LRCK Rising Edge to SCLK Rising Edge
SDINx Setup Time Before SCLK Rising Edge
SDINx Hold Time After SCLK Rising Edge
PCM Slave Mode
SCLK Frequency
FS/LRCK Duty Cycle
FS/LRCK Edge to SCLK Rising Edge
SDINx Setup Time Before SCLK Rising Edge
SDINx Hold Time After SCLK Rising Edge
PCM Master Mode
SCLK Frequency
FS/LRCK Duty Cycle
FS/LRCK Edge to SCLK Rising Edge
SDINx Setup Time Before SCLK Rising Edge
SDINx Hold Time After SCLK Rising Edge
(VL = 1.8 V)
SDINx Hold Time After SCLK Rising Edge
(VL = 2.5 V, 3.3 V, or 5 V)
Notes:
25. After applying power to the
are stable.
26. MCLK must be synchronous to and scale with F
27. The SCLK frequency must remain less than or equal to the MCLK frequency. For this reason, SCLK
may range from 256x to 512x only in single speed mode. In double speed mode, 256x is the only ratio
supported.
28. The MSB of CH1 is always aligned with the second SCLK rising edge following FS/LRCK rising edge.
29. Where "n" is equal to the MCLK to LRCK ratio (set by the
mode, n = 256, in 512x mode, n = 512, etc.
DS900F2
Parameters
Single-Speed Mode
Double-Speed Mode
,
CS4244 RST
Symbol
(Note 25)
(Note 26)
F
S
F
S
t
dh2
t
dh2
t
dh2
(Note 27)
t 1/f
lpw
(Note 28)
t
lcks
t
ds
t
dh1
t
lcks
t
ds
t
dh1
t
lcks
t
ds
t
dh1
t
dh1
should be held low until after the power supplies and MCLK
.
S
Master Clock Rate
Min Max
-
1
7.68 25.6
45 55
45 55
30 50
60 100
- 31
- 22
- 17
256x 512x
(n-1)/f
SCLK SCLK
(Note 29)
5 -
3 -
5 -
32x 64x
45 55
5 -
3 -
5 -
64x 64x
45 55
5 -
5 -
11 -
10 -
register bits), i.e. in 256x
CS4244
Units
ms
MHz
%
%
kHz
kHz
ns
ns
ns
F
S
ns
ns
ns
ns
F
S
%
ns
ns
ns
F
S
%
ns
ns
ns
ns
19