参数资料
型号: YMF754-V
厂商: Yamaha Corporation
英文描述: DS-1E
中文描述: 副秘书长至1E
文件页数: 50/60页
文件大小: 305K
代理商: YMF754-V
YMF754
June 28, 1999
-54-
4-3. PCI Interface
(Fig.3, 4)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
PCICLK Cycle Time
tPCYC
30
-
ns
PCICLK High Time
tPHIGH
11
-
ns
PCICLK Low Time
tPLOW
11
-
ns
PCICLK Slew Rate
-
1
-
4
V/ns
tPVAL
(Bused signal)
2
-
11
ns
PCICLK to Signal Valid Delay
tPVAL(PTP) (Point to Point)
2
-
12
ns
Float to Active Delay
tPON
2-
-
ns
Active to Float Delay
tPOFF
--
28
ns
tPSU
(Bused signal)
7
-
ns
*11 (Point to Point)
10
-
ns
Input Setup Time to PCICLK
tPSU(PTP)
*12 (Point to Point)
12
-
ns
Input Hold Time for PCICLK
tPH
0-
-
ns
Note : Top = 0-70°C, PVDD=3.3
±0.3 V, VDD=3.3±0.3 V, CVDD=2.5±0.2 V, LVDD=2.5±0.2 V, C
L=10 pF
*11: This characteristic is applicable to REQ# and PCREQ# signal.
*12: This characteristic is applicable to GNT# and PCGNT# signal.
t
PCICLK
PCYC
t
PHIGH
0.3 VDD3
0.4 VDD3
0.5 VDD3
t
PLOW
Fig.3: PCI Clock timing
PCICLK
OUTPUT
INPUT
Tri-State
OUTPUT
1.5 V
t
PVAL
t
PON
t
POFF
t
PSU
t
PH
Fig.4: PCI Bus Signals timing
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