CS4237B Datasheet, PDF (6/114 Pages) Cirrus Logic – CrystalClear Advanced Audio System with 3D Sound

CS4237B
DIGITAL FILTER CHARACTERISTICS (Note 1)
Parameter
Symbol Min
Typ
Max Units
Passband
Frequency Response
Passband Ripple
(0-0.40xFs)
Transition Band
Stop Band
Stop Band Rejection
Group Delay
8- and 16-bit formats
Stereo ADPCM format
Mono ADPCM format
Group Delay Variation vs. Frequency
ADCs
DACs
0
-
0.40xFs Hz
-1.0
-
+0.5
dB
-
-
±0.1
dB
0.40xFs
-
0.60xFs Hz
0.60xFs
-
-
Hz
74
-
-
dB
-
-
10/Fs
s
-
-
14/Fs
s
-
-
18/Fs
s
-
-
0.0
µs
-
-
0.1/Fs _µs
DIGITAL CHARACTERISTICS (TA = 25°C; VA, VDF1-VDF4 = 5V, VD1 = 5V/3V;
AGND, DGND1, SGND1-SGND4 = 0V.)
Parameter
Symbol
Min
Max
Units
High-level Input Voltage
Digital Inputs V_IH
XTALI
2.0
VD-1.0
-
V
-
V
Low-level Input Voltage
VIL
-
High-level Output Voltage:
ISA Bus Pins (except DRQA) I0 = -24.0 mA VOH
2.4
DRQA
I0 = -24.0 mA
2.4
IOCHRDY, SDA/XD0 (Note 6)
2.4
All Others
I0 = -1.0 mA
2.4
Low-level Output Voltage: ISA Bus Pins I0 = 24.0 mA V_OL
-
I0 = 18.0 mA
-
IOCHRDY
I0 = 8.0 mA
-
All Others
I0 = 4.0 mA
-
Input Leakage Current
(Digital Inputs)
-10
0.8
V
VD1
V
VDF
V
VDF
V
VDF
V
0.55
V
0.4
V
0.4
V
0.4
V
10
µA
Output Leakage Current
(High-Z Digital Outputs)
-10
10
µA
Note 6. Open Collector pins. High level output voltage dependent on external pull up (required) used and
number of peripherals (gates) attached.
6
DS213PP4