cs4239 Cirrus Logic, Inc., cs4239 Datasheet - Page 7

• Manufacturer Part Number: cs4239
• Description: Crystalclear? Ortable Isa Audio System Logic
• Manufacturer: Cirrus Logic, Inc.

Timing Parameters
Input Levels: Logic 0 = 0 V, Logic 1 = VD1, Rise/Fall time = 2 ns; Input/Output reference levels = 2.5 V)
Notes
DS253PP2
Passband
Frequency Response
Passband Ripple
Transition Band
Stop Band
Stop Band Rejection
Group Delay
Group Delay Variation vs. Frequency
E
SCL Low to SDA Data Out Valid
Start Condition Hold Time
Clock Low Period
Clock High Period
Start Condition Setup Time
(for a Repeated Start Condition)
Data In Hold Time
Data In Setup Time
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
ZVPORT Timing
ZLRCK delay after ZSCLK rising (to be ignored)
ZLRCK setup before ZSCLK rising
ZSCLK low period
ZSCLK high period
ZSDATA setup to ZSCLK rising
ZSDATA hold after ZSCLK rising
ADC1/DAC1 DIGITAL FILTER CHARACTERISTICS
2
PROM Timing (Note 1)
7. Rise time on SDA is determined by the capacitance of the SDA line with all connected gates and the
external pullup resistor required.
Parameter
Parameter
(T
A
= 25 °C; VA, VD1, VDF1-VDF3 = +5 V; outputs loaded with 30 pF;
8- and 16-bit formats
(0-0.40xFs)
(Note 7)
ADC1
DAC1
Symbol
Symbol
t
t
t
t
t
HD:DAT
SU:STO
HD:STA
SU:STA
SU:DAT
t
t
t
t
LSCL
HSCL
t
t
t
sclkh
t
t
sdlrs
t
sclkl
slrd
slrs
sdh
t
DH
AA
t
R
F
CrystalClear Portable ISA Audio System
0.40xFs
0.60xFs
Min
-1.0
(Note 1)
74
0
Min
250
4.0
4.7
4.0
4.7
4.7
32
22
22
32
0
0
0
2
2
TM
Typ
Max
300
3.5
0.40xFs
0.60xFs
1
0.1/Fs
10/Fs
Max
+0.5
0.0
0.1
CS4239
Units
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
Hz
dB
dB
Hz
Hz
dB
s
s
s
s
s
s
s
s
s
s
s
7