CS4297-KQ Cirrus Logic, CS4297-KQ Datasheet - Page 7

• Manufacturer Part Number: CS4297-KQ
• Description: CrystalClear SoundFusion Audio Codec 97
• Manufacturer: Cirrus Logic

DS242F5
DIGITAL CHARACTERISTICS
SERIAL PORT TIMING
CS4297
CrystalClear™ SoundFusion™ Audio Codec ’97
Low level input voltage
High level input voltage
High level output voltage
Low level output voltage
Input Leakage Current (AC-link inputs)
Output Leakage Current (Tri-stated AC-link outputs)
Output buffer drive current
RESET Timing
DVdd 90% maximum value to RESET# inactive pre-delay
RESET# active low pulse width
RESET# inactive to BIT_CLK start-up delay
1st SYNC active to CODEC READY set
Clocks
BIT_CLK frequency
BIT_CLK period
BIT_CLK output jitter (depends on XTAL_IN source)
BIT_CLK high pulse width
BIT_CLK low pulse width
SYNC frequency
SYNC period
SYNC high pulse width
SYNC low pulse width
SYNC active to RESET# inactive pre-delay
Data Setup and Hold
Output Propagation delay from rising edge of BIT_CLK
Output hold from falling edge of BIT_CLK
Input setup time from falling edge of BIT_CLK
Input hold time from falling edge of BIT_CLK
Input Signal rise time
Input Signal fall time
Output Signal rise time
Output Signal fall time
Parameter
Parameter
(Note 4)
(AVss = DVss = 0 V (See Grounding and Layout section))
(Note 4)
(Note 4)
(Note 4)
Symbol
V
V
V
V
oh
ih
ol
il
T
T
T
T
sync_period
T
Symbol
T
T
T
T
T
clk_period
sync_high
T
sync2crd
sync_low
T
0.40 x DVdd
0.70 x DVdd 0.99 x DVdd
Vdd2rst#
clk_high
T
rst2snyc
T
T
clk_low
rst_low
T
T
T
rst2clk
T
isetup
ohold
ihold
prop
ofall
ofall
irise
ifall
Min
-10
-10
-
-
-
Min
1.5
1.0
10
5
0
2
2
2
2
-
-
-
-
-
-
-
-
-
-
-
-
-
0.03
Typ
100
-
-
-
-
12.288
42.7
40.6
81.4
40.7
40.7
20.8
19.5
Typ
1.3
48
6
4
4
-
-
-
-
-
-
-
-
-
0.16 x DVdd
0.10 x DVdd
Max
400
10
10
Max
750
250
-
-
8
6
6
6
6
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
MHz
Unit
kHz
Unit
ms
ms
ms
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ps
µA
µA
µA
V
V
V
V
s
s
s
s
s
7