User guide

CS6422
8
SWITCHING CHARACTERISTICS
Parameter Symbol Min Typ Max Units
Digital input rise time t
rise
1.0 µs
RST
low time
t
RSTL
1.0 µs
CLKI frequency f
CLKI
20.480 MHz
CLKI duty cycle t
LCLKI
40 50 60 %
CLKI high or low time t
HLCLKI
19.5 ns
Min DRDY
falling to DRDY falling (CLKI = 20.480 MHz)
t
DRDY
125 µs
STROBE high or low time t
HLSTROBE
55 ns
DRDY
falling to STROBE rising setup time
t
sDRDY
30 ns
DATA valid to STROBE rising setup time t
sDATA
30 ns
STROBE rising to DATA valid hold time t
hDATA
30 ns
STROBE rising to DRDY
rising hold time
t
hDRDY
30 ns
Min RST
rising to 4th extra STROBE pulse (cold reset)
t
cRST
110 ms
Max RST
rising to 4th extra STROBE pulse (warm reset)
t
wRST
100 ms
1
f
CLKI
t
HLCKI
t
HLCKI
Figure 1. CLKI Timing
Bit15 Bit14 Bit2 Bit1 Bit0DATA
DRDY
STROBE
four extra strobe pulses
1234
RST
t
RSTL
t
cRST
t
wRST
Figure 2. Reset Timing
Bit15 DATA
DRDY
STROBE
Bit14 Bit0
t
sDRDY
t
sDATA
t
hDATA
t
hDRDY
Bit15 Bit14
t
HLSTROBE
t
DRDY
Figure 3. Microcontroller Interface Timing
CS6422
8 DS295F1