參數(shù)資料
型號(hào): STP2223BGA
元件分類: 總線控制器
英文描述: PCMCIA BUS CONTROLLER, PBGA456
封裝: PLASTIC, BGA-456
文件頁數(shù): 20/34頁
文件大小: 476K
代理商: STP2223BGA
27
UPA to PCI Interface
U2P
STP2223BGA
July 1997
The maximum skews between the rising edge and the falling edge of UPA_CLK + and UPA_CLK - are 50 ps.
That is, the rising edge of UPA_CLK + can be shared at most 50 ps after/before the falling edge of UPA_CLK -.
The falling edge of UPA_CLK + can be skewed at most 50 ps after/before the rising edge of UPA_CLK -.
Note:
Worst Case Slow Motive shows tco_max = 4.1 ns @ 70 pf.
TABLE 10: UPA_CLK Characteristics
Signal Name
Description
DC Levels
Min
Max
Unit
tcycle
Clock cycle time
VIL<VDD - 1.475
40
100
MHz
tHC
Clock high time
VIH > VDD - 1.165
4.4
ns
tLC
Clock low time
4.4
ns
tRC
Clock rise time
600
ps
tFC
Clock fall time
600
ps
TABLE 11: UPA Input and Output Timing
Signal Name
Description
Condition
Min
Max
Unit
tSU
Input Setup Time
2.1
ns
tH
Input Hold Time
0.5
ns
tCO
Output Propagation Time
55pf
0
4.1
ns
tVO
Output Hold Time
55pf
0.5
ns
tRI
Input Rise Time
1.0
ns
tFI
Input Fall Time
1.0
ns
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