參數(shù)資料
型號: SAA7146A
廠商: NXP Semiconductors N.V.
英文描述: Multimedia bridge, high performance Scaler and PCI circuit SPCI
中文描述: 多媒體橋梁,高性能潔牙機和PCI電路SPCI
文件頁數(shù): 136/144頁
文件大?。?/td> 645K
代理商: SAA7146A
1998 Apr 09
136
Philips Semiconductors
Product specification
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Notes
1.
2.
3.
Input leakage currents include high-impedance output leakage for all bidirectional buffer with 3-state outputs.
Levels measured with load circuit: 1.2 k
at 3 V (TTL load) and C
L
= 40 pF.
Voltage of the V
DDI2C
sense pin is defined as V
DDI2C
(4.75 : 5.0 : 5.25) (MIN. : TYP. : MAX.) for 5 V I
2
C-bus devices
and V
DDI2C
(3.0 : 3.3 : 3.6) (MIN. : TYP. : MAX.) for 3 V I
2
C-bus devices.
C
b
= capacitance of one bus line measured in pF.
I/O pins of fast-mode devices must not obstruct the SDA and SCL lines if V
DDI2C
is switched off.
FRAME#, TRDY#, IRDY#, DEVSEL# and STOP#.
Lower capacitance on this input only pin allows for non-resistive coupling to AD(xx).
Refer to the V/I curves in PCI specification. ‘Switching current high’ specifications are not relevant to INTA#, which
are open-drain outputs.
I
OH
= 11.9
×
(V
o
5.25)
×
(V
o
+ 2.45) for V
DDD
> V
o
> 3.1 V.
10. I
OL
= 78.5
×
V
o
×
(4.4
V
o
) for 0 V < V
o
< 0.71 V.
11. This parameter is to be interpreted as the cumulative edge rate across the specified range, rather than the
instantaneous rate at any point within the transition range.
12. REQ# and GNT# are point-to-point signals, and have different output valid delay and input set-up times that do
bussed signals. GNT# has a set-up time of 10 ns. REQ# has an output valid delay time of 12 ns. All other signals are
bussed.
13. For purposes of active/float timing measurements the high-impedance or ‘off’ state is defined to be when the total
current delivered through the component pin is less than or equal to the leakage current specification.
14. RST# is asserted and de-asserted asynchronously with respect to CLK.
15. All output drivers floated asynchronously when RST# is active.
4.
5.
6.
7.
8.
9.
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