SigmaTel, Inc.
Data Sheet
STAC9721
9.4 Data Setup and Hold (50pF external load)
. Data Setup and Hold
Figure 16
Tsetup
BIT_CLK
SDATA_IN
SDATA_OUT
Thold
SYNC
Thold
Tsetup
. Data Setup and Hold
Table 26
Parameter
Symbol
Min
Typ
Max
Units
Setup to falling edge of BIT_CLK
Hold from falling edge of BIT_CLK
Tsetup
Thold
10
10
-
-
-
-
ns
ns
Note 1: Setup and hold time parameters for SDATA_IN are with respect to the AC'97 controller.
9.5 Signal Rise and Fall Times - (50pF external load; from 10% to 90% of Vdd)
. Signal Rise and Fall Times
Figure 17
BIT_CLK
Triseclk
Tfallclk
Tfalldin
SDATA_IN
Trisedin
. Signal Rise and Fall Times
Table 27
Parameter
Symbol
Min
Typ
Max
Units
BIT_CLK rise time
BIT_CLK fall time
SDATA_IN rise time
SDATA_IN fall time
Triseclk
Tfallclk
Trisedin
Tfalldin
2
2
2
2
-
-
-
-
6
6
6
6
ns
ns
ns
ns
35
04/07/00
04/07/00
ETC [ ETC ]
