Cirrus Logic CS4398 - Manual (Page 14)

14 DS568F1
CS4398
SWITCHING CHARACTERISTICS - DSD
(Logic 0 = AGND = DGND; Logic 1 = VLS Volts; C
L
= 20 pF)
Parameter Symbol Min Typ Max Unit
MCLK Duty Cycle 40 - 60 %
DSD_SCLK Pulse Width Low t
sclkl
160 - - ns
DSD_SCLK Pulse Width High t
sclkh
160 - - ns
DSD_SCLK Frequency (64x Oversampled)
(128x Oversampled)
1.024
2.048 -
- 3.2
6.4 MHz
MHz
DSD_A / _B valid to DSD_SCLK rising setup time t
sdlrs
20 - - ns
DSD_SCLK rising to DSD_A or DSD_B hold time t
sdh
20 - - ns
DSD clock to data transition (Phase Modulation mode) t
dpm
-20 - 20 ns
sclkh
t
sclkl
t
DSD_A,DSD_B
D SD _S C LK
sdlrs
t
sdh
t
Figure 6. Direct Stream Digital - Serial Audio Input Timing
d p m
t
DSD_A, DSD_B
D S D _ S C L K
( 6 4 F s )
D S D _ S C L K
( 1 2 8 F s )
d p m
t
Figure 7. Direct Stream Digital - Serial Audio Input Timing for Phase Modulation Mode