參數(shù)資料
型號(hào): UCB1500
廠商: NXP SEMICONDUCTORS
元件分類: 總線控制器
英文描述: PCI to AC97 bridge/host controller
中文描述: PCI BUS CONTROLLER, PQFP80
封裝: 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-315-1, LQFP-80
文件頁數(shù): 48/58頁
文件大?。?/td> 1001K
代理商: UCB1500
Philips Semiconductors
UCB1500
PCI to AC97 bridge/host controller
Objective specification
Rev. 01 — 4 February 2000
48 of 58
9397 750 06854
Philips Electronics N.V. 2000. All rights reserved.
12. Dynamic characteristics
13. Clock and timing specification
13.1 PCI clock timing
13.2 PCI timing parameters
Table 74: AC Characteristics
V
CC
= 3.3 V
Symbol
Parameter
I
OH(AC)
Switching current
HIGH
Conditions
0 V < V
out
< 1.4 V
1.4 V < V
out
< 2.4 V
Min
44
Typ
Max
Unit
mA
mA
3.1 V < V
out
< V
DD
V
out
= 3.1 V
Eqt’n A
142
mA
mA
mA
mA
(test point)
Switching current LOW V
out
> 2.2 V
I
OL(AC)
95
2.2 V > V
out
> 0.55 V
0.71 V > V
out
>
1 V
V
out
= 0.71 V
5 V < V
in
<
1 V
Eqt’n B
206
(test point)
LOW clamp current
mA
mA
I
OL
slew
r
slew
f
Output rise slew rate
Output fall slew rate
0.4 V to 2.4 V load
2.4 V to 0.4 V load
1
1
3.3
3.3
V/ns
V/ns
44
V
-----------------------------
(
1.4
)
+
V
------------
25
V
1
+
(
---------------------
)
+
Table 75: PCI clock timing
Frequency = 33 MHz
Symbol
Parameter
T
cyc
PCICLK cycle time
T
high
PCICLK HIGH time
T
low
PCICLK LOW time
PCICLK slew rate
Min
30
11
11
1
Max
Unit
ns
ns
ns
V/ns
4
Table 76: PCI timing parameters
Frequency = 33 MHz
Symbol
Parameter
T
val
PCICLK to signal valid delay
T
on
Float to active delay
T
off
Active to float delay
T
su
Input setup time to PCICLK
T
h
Input hold time from PCICLK
T
rst-clk
Reset active time after PCICLK stable
T
rst-off
Reset active to output float delay
Min
2
2
Max
11
Unit
ns
ns
ns
ns
ns
μ
s
ns
28
7
0
100
40
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