CS4245-CQZR Cirrus Logic Inc, CS4245-CQZR Datasheet - Page 28

• Manufacturer Part Number: CS4245-CQZR
• Description: IC,Soundcard Circuits,QFP,48PIN,PLASTIC
• Manufacturer: Cirrus Logic Inc

28
SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT
Inputs: Logic 0 = DGND = AGND = 0 V, Logic 1 = VLC, C
CCLK Clock Frequency
RESET Rising Edge to CS Falling
CS High Time Between Transmissions
CS Falling to CCLK Edge
CCLK Low Time
CCLK High Time
CDIN to CCLK Rising Setup Time
CCLK Rising to DATA Hold Time
CCLK Falling to CDOUT Stable
Rise Time of CDOUT
Fall Time of CDOUT
Rise Time of CCLK and CDIN
Fall Time of CCLK and CDIN
32. Data must be held for sufficient time to bridge the transition time of CCLK.
33. For f
sck
<1 MHz.
CDOUT
Parameter
CDIN
CCLK
RST
CS
t css
Figure 11. Control Port Timing - SPI Format
t r2
t srs
t dsu
t scl
t f2
(Note 32)
(Note 33)
(Note 33)
t sch
t dh
L
= 30 pF.
Symbol
t pd
t
t
t
t
f
t
t
t
t
csh
sch
dsu
t
t
t
t
sck
css
srs
scl
dh
pd
r1
f1
r2
f2
Min
500
1.0
20
66
66
40
15
-
-
-
-
-
-
t csh
Max
100
100
6.0
50
25
25
-
-
-
-
-
-
-
CS4245
DS656F2
Units
MHz
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns