CS4281 Datasheet, PDF (7/36 Pages) Cirrus Logic – CrystalClear PCI Audio interface

CS4281
CrystalClear™ PCI Audio Interface
AC-LINK SERIAL INTERFACE (T_A = 0 to 70° C; PCIVDD = CVDD = VAUX = CRYVDD = 3.3 V;
VDD5REF = 5 V; PCIGND = CGND = CRYGND = 0 V; Logic 0 = V_ol,V_il, Logic 1 = V_oh,V_ih; unless otherwise noted)
Parameter
Symbol Min Typ Max Unit
ABITCLK input cycle time
t_{clk_period}
81.4
-
ns
ABITCLK input high time
t_{clk_high}
36
40.7
45
ns
ABITCLK input low time
t_{clk_low}
36
40.7
45
ns
ABITCLK input rise/fall time
t_rfclk
2
-
6
ns
ASDIN/ASDIN2 valid to ABITCLK falling
t_setup
10
-
-
ns
ASDIN/ASDIN2 hold after ABITCLK falling
t_hold
10
-
-
ns
ASDIN/ASDIN2 input rise/fall time
t_rfin
2
-
6
ns
ABITCLK rising to ASDOUT/ASYNC valid, C_L = 55 pF
t_co
2
-
15
ns
ASYNC/ASDOUT rise/fall time, C_L = 55 pF
t_rfout
2
-
6
ns
t_{clk_period}
ABITCLK
t_rfclk
ASDIN/ASDIN2
t_{clk_high}
t_{clk_low}
t_rfclk
t_hold
t_rfin
t_setup
ASDOUT
ASYNC
t_co
t_rfout
t_rfout
Figure 3. AC ’97 Configuration Timing Diagram
t_co ^tco
t_rfout
CIRRUS LOGIC PRODUCT DATA SHEET
DS308PP4
7