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CS6422 Datasheet(PDF) 8 Page - Cirrus Logic

Part No. CS6422
Description  Enhanced Full-Duplex Speakerphone IC
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS6422
8
SWITCHING CHARACTERISTICS
Parameter
Symbol
Min
Typ
Max
Units
Digital input rise time
trise
1.0
µs
RST low time
tRSTL
1.0
µs
CLKI frequency
fCLKI
20.480
MHz
CLKI duty cycle
tLCLKI
40
50
60
%
CLKI high or low time
tHLCLKI
19.5
ns
Min DRDY falling to DRDY falling (CLKI = 20.480 MHz)
tDRDY
125
µs
STROBE high or low time
tHLSTROBE
55
ns
DRDY falling to STROBE rising setup time
tsDRDY
30
ns
DATA valid to STROBE rising setup time
tsDATA
30
ns
STROBE rising to DATA valid hold time
thDATA
30
ns
STROBE rising to DRDY rising hold time
thDRDY
30
ns
Min RST rising to 4th extra STROBE pulse (cold reset)
tcRST
110
ms
Max RST rising to 4th extra STROBE pulse (warm reset)
twRST
100
ms
1
f
CLKI
t
HLCKI
t
HLCKI
Figure 1. CLKI Timing
Bit15 Bit14
Bit2
Bit1
Bit0
DATA
DRDY
STROBE
four extra strobe pulses
12
34
RST
t RSTL
tcRST
twRST
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




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