Cs5378, Switching characteristics – Cirrus Logic CS5378 User Manual
Page 16

CS5378
DS639F3
16
SWITCHING CHARACTERISTICS
CLK, SYNC, MCLK, MSYNC, and MDATA
Notes: 3. PLL bypass mode. The PLL generates a 32.768 MHz master clock when enabled.
4. Sampling synchronization between multiple CS5378 devices receiving identical SYNC signals.
Parameter
Symbol Min Typ
Max
Unit
Master Clock Frequency
(Note 3)
CLK
32
32.768
33
MHz
Master Clock Duty Cycle
DTY
40
-
60
%
Master Clock Rise Time
t
RISE
-
-
20
ns
Master Clock Fall Time
t
FALL
-
-
20
ns
Master Clock Jitter
JTR
-
-
300
ps
Synchronization after SYNC rising
(Note 4)
SYNC
-2
-
2
μs
MSYNC Setup Time to MCLK rising
t
mss
20
-
-
ns
MCLK rising to Valid MDATA
t
mdv
-
-
75
ns
MSYNC falling to MCLK rising
t
msf
20
-
-
ns
MSYNC
MCLK
MDATA
Figure 7. SYNC, MCLK, MSYNC, MDATA Interface Timing
t
msd
t
msd
t
msh
Data1
Data2
SYNC
f
MCLK
2.048 MHz
1.024 MHz
t
msd
= T
MCLK
/ 4
t
msd
= 122 ns
t
msd
= 244 ns
t
msh
= T
MCLK
t
msh
= 488 ns
t
msh
= 976 ns
Note: SYNC input latched on MCLK rising edge. MSYNC output triggered by MCLK falling edge.
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