参数资料
型号: YMF724
厂商: Yamaha Corporation
英文描述: high performance audio controller for the PCI Bus
中文描述: 高性能音频控制器的PCI总线
文件页数: 39/50页
文件大小: 268K
代理商: YMF724
YMF724F
January 14, 1999
-44-
4. AC Characteristics
4-1. Master Clock
(Fig.1)
Item
Symbol
Min.
Typ.
Max.
Unit
XI24 Cycle Time
tXICYC
-
40.69
-
ns
XI24 High Time
tXIHIGH
16
-
24
ns
XI24 Low Time
tXILOW
16
-
24
ns
Note : Top = 0-70°C, PVDD=5.0
±0.25 V, VDD5=5.0±0.25 V, VDD3=3.3±0.3 V, LVDD=3.3±0.3 V
t
XI24
XICYC
t
XIHIGH
1.0 V
2.5 V
3.5 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
tRST
1-
-
ms
Power Stable to Reset Rising Edge
tRSTOFF
10
-
ms
Reset Slew Rate
-
50
-
mV/ns
Note : Top = 0-70°C, PVDD=5.0
±0.25 V, VDD5=5.0±0.25 V, VDD3=3.3±0.3 V, LVDD=3.3±0.3 V, C
L=50 pF
PVDD, VDD5
RST#
LVDD, VDD3
4.75 V
3.0 V
0.6 V
t
RST
t
RSTOFF
Fig.2: PCI Reset timing
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