User Manual

24 DS851F2
CS42L56
SWITCHING CHARACTERISTICS - SPI CONTROL PORT
Inputs: Logic 0 = GND = AGND, Logic 1 = VL, SDA C
L
=30pF.
Notes:
24. Data must be held for sufficient time to bridge the transition time of CCLK.
25. For f
sck
<1 MHz.
Parameter Symbol Min Max Units
CCLK Clock Frequency
f
sck
06.0MHz
RESET Rising Edge to CS Falling
t
srs
20 - ns
CS
Falling to CCLK Edge
t
css
20 - ns
CS High Time Between Transmissions
t
csh
1.0 - s
CCLK Low Time
t
scl
66 - ns
CCLK High Time
t
sch
66 - ns
CDIN to CCLK Rising Setup Time
t
dsu
40 - ns
CCLK Rising to DATA Hold Time (Note 24)
t
dh
15 - ns
Rise Time of CCLK and CDIN (Note 25)
t
r2
- 100 ns
Fall Time of CCLK and CDIN (Note 25)
t
f2
- 100 ns
CS
CCLK
CDIN
RESET
t
srs
t
scl
t
sch
t
css
t
r2
t
f2
t
csh
t
dsu
t
dh
Figure 11. Control Port Timing - SPI Format