YMF744B
February 3, 1999
-53-
4. AC Characteristics
4-1. Master Clock (Fig.1)
Item
Symbol
Min.
Typ.
Max.
Unit
XI24 Cycle Time
t
XICYC
-
40.69
-
ns
XI24 High Time
t
XIHIGH
13
-
24
ns
XI24 Low Time
t
XILOW
13
-
24
ns
Note : Top = 0-70°C, PVDD=3.3
±
0.3 V, VDD=3.3
±
0.3 V, CVDD=3.3
±
0.3 V, LVDD=3.3
±
0.3 V
t
XI24
XICYC
t
XIHIGH
1.0 V
1.65 V
2.3 V
t
XILOW
Fig.1: XI24 Master Clock timing
4-2. Reset (Fig.2)
Item
Symbol
Min.
Typ.
Max.
Unit
Reset Active Time after Power Stable
t
RST
1
-
-
ms
Power Stable to Reset Rising Edge
t
RSTOFF
10
-
-
ms
Reset Slew Rate
-
50
-
-
mV/ns
Note : Top = 0-70°C, PVDD=3.3
±
0.3 V, VDD=3.3
±
0.3 V, CVDD=3.3
±
0.3 V, LVDD=3.3
±
0.3 V, C
L
=50 pF
RST#
PVDD, LVDD,
VDD, CVDD
3.0 V
0.8 V
t
RST
t
RSTOFF
Fig.2: PCI Reset timing