CS4397
DSD - SWITCHING CHARACTERISTICS (T = -10 to 70°C; Logic 0 = AGND = DGND; Logic
A
1 = VD = 5.25 to 3.0 Volts; C = 20 pF)
L
Parameter
Symbol
Min
Typ
Max
Unit
Input Bit Rate per Channel
(64x Oversampled)
(128x Oversampled)
1.024
2.048
-
-
3.2
6.4
Mb/s
Mb/s
Master Clock Frequency
(CLKMODE = 0)
(CLKMODE = 1)
4.096
6.144
-
-
12.8
19.2
MHz
MHz
MCLK Duty Cycle
(All DSD modes)
40
20
20
-
-
-
60
-
%
ns
ns
DSD_SCLK Pulse Width Low
DSD_SCLK Pulse Width High
DSD_SCLK Frequency
t
sclkl
t
-
sclkh
(64x Oversampled)
(128x Oversampled)
1.024
2.048
-
-
3.2
6.4
MHz
MHz
DSD_LI_R valid to DSD_SCLK rising setup time
DSD_SCLK rising to DSD_L or DSD_R hold time
t
20
20
-
-
-
-
ns
ns
sdlrs
t
sdh
t
sclkh
t
sclkl
DSD_SCLK
t
t
sdlrs
sdh
DSD_L, DSD_R
Figure 2. Direct Stream Digital - Serial Audio Input Timing
DS333F1
11
CIRRUS [ CIRRUS LOGIC ]
