CS4239
TM
CrystalClear Portable ISA Audio System
ADC1/DAC1 DIGITAL FILTER CHARACTERISTICS (Note 1)
Parameter
Symbol
Min
Typ
Max
Units
Passband
0
0.40xFs
+0.5
Hz
dB
dB
Hz
Hz
dB
s
Frequency Response
Passband Ripple
Transition Band
Stop Band
-1.0
(0-0.40xFs)
±0.1
0.40xFs
0.60xFs
74
0.60xFs
Stop Band Rejection
Group Delay
8- and 16-bit formats
10/Fs
Group Delay Variation vs. Frequency
ADC1
DAC1
0.0
0.1/Fs
µs
µs
Timing Parameters (TA = 25 °C; VA, VD1, VDF1-VDF3 = +5 V; outputs loaded with 30 pF;
Input Levels: Logic 0 = 0 V, Logic 1 = VD1, Rise/Fall time = 2 ns; Input/Output reference levels = 2.5 V)
Parameter
E2PROM Timing (Note 1)
Symbol
Min
Max
Units
SCL Low to SDA Data Out Valid
Start Condition Hold Time
Clock Low Period
tAA
0
3.5
µs
µs
µs
µs
µs
tHD:STA
tLSCL
4.0
4.7
4.0
4.7
Clock High Period
tHSCL
Start Condition Setup Time
tSU:STA
(for a Repeated Start Condition)
Data In Hold Time
tHD:DAT
tSU:DAT
tR
0
µs
ns
µs
ns
µs
ns
Data In Setup Time
250
SDA and SCL Rise Time
SDA and SCL Fall Time
Stop Condition Setup Time
Data Out Hold Time
(Note 7)
1
tF
300
tSU:STO
tDH
4.7
0
ZVPORT Timing
ZLRCK delay after ZSCLK rising (to be ignored)
ZLRCK setup before ZSCLK rising
ZSCLK low period
tslrd
tslrs
2
ns
ns
ns
ns
ns
ns
32
22
22
32
2
tsclkl
tsclkh
tsdlrs
tsdh
ZSCLK high period
ZSDATA setup to ZSCLK rising
ZSDATA hold after ZSCLK rising
Notes 7. Rise time on SDA is determined by the capacitance of the SDA line with all connected gates and the
external pullup resistor required.
DS253PP2
7
CIRRUS [ CIRRUS LOGIC ]
