參數(shù)資料
型號: HPC3130PBKLOW-PROFILEQUAD
廠商: Texas Instruments, Inc.
英文描述: PCI HOT PLUG CONTROLLER
中文描述: 的PCI熱插拔控制器
文件頁數(shù): 36/40頁
文件大?。?/td> 555K
代理商: HPC3130PBKLOW-PROFILEQUAD
HPC3130
PCI HOT PLUG CONTROLLER
SCPS029B – DECEMBER1998
36
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
PCI timing requirements over recommended ranges of supply voltage and operating free–air
temperature
(see Note 3)
PARAMETER
ALTERNATE
SYMBOL
TEST CONDITIONS
MIN
MAX
UNITS
tpd
Propagation delay time
PCLK to shared signal valid delay
time
tval
CL = 50 pF,
See Note 4,
1,2,3
2
11
ns
ten
tdis
tsu
th
Applies to external output buffers.
NOTES:
3. This data sheet uses the following conventions to describe time ( t ) intervals. The format is: tA, where
subscript A
indicates the type
of dynamic parameter being represented. One of the following is used: tpd = propagation delay time, td = delay time, tsu = setup time,
and th = hold time.
4. PCI shared signals are AD31–AD0, C/BE3–C/BE0, PCIFRAME, PCITRDY, PCIIRDY, PCISTOP, IDSEL, PCIDEVSEL, and
PCIPAR.
Enable time, high-impedance-to-active delay time from PCLK
ton
toff
tsu
th
2
ns
Disable time, active-to-high-impedance delay time from PCLK
28
ns
Valid setup time, before PCLK
3,4
3
ns
Hold time, after PCLK high
4
0
ns
serial bus interface
STANDARD
MODE
FAST MODE
UNIT
MIN
MAX
MIN
MAX
fSCL
tBUF
SCL clock frequency (see Note 5)
0
100
0
400
kHz
μ
s
Bus free time between a STOP and START condition
4.7
1.3
tHD;STA
Hold time (repeated) START condition. After this period, the first clock pulse is
generated
4
0.6
μ
s
tLOW
tHIGH
tSU;STA
LOW period of the SCL clock
4.7
1.3
μ
s
μ
s
μ
s
HIGH period of the SCL clock
4
0.6
Setup time for a repeated START condition
4.7
0.6
tHD DAT
tHD;DAT
Data hold time (see Note 6)
For CBUS compatible masters:
5
μ
s
For Serial bus devices:
01
250
01
0.92
tSU;DAT
tR
tF
tFSU;STO
All values refer to serial bus interface VIH MIN and VIL MAX levels
NOTES:
5. A device must internally provide a hold time of at least 300 ns for the SDA signal (referred to the VIH MIN of the SCL signal) in order
to bridge the undefined region of the falling edge of SCL.
6. The maximum tHD;DAT has only to be met if the device does not stretch the LOW period (tLOW ) of the SDL signal.
7. A fast mode serial bus device can be used in a standard mode serial bus system, but the requirement tSU;DAT > 250 ns must then
be met. This will automatically be the case if the device does not stretch the LOW period of the SCL signal. If such a device does
stretch the LOW period of the SCL signal, it must output the next data bit to the SDA line tR MAX + tSU;DAT = 1000 + 250 = 1250 ns
(according to the Standard Mode Serial Bus Specification) before the SCL line is released.
Data set–up time (see Note 7)
1003
20
μ
s
μ
s
μ
s
μ
s
Rise time of both SDA and SCL signals
1000
300
Fall time of both SDA and SCL signals
300
20
300
Setup time for STOP condition
4
0.6
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