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): 18/34頁
文件大?。?/td> 476K
代理商: STP2223BGA
25
UPA to PCI Interface
U2P
STP2223BGA
July 1997
The JTAG signals are referenced to JTAG Test Clock PSY_TCLK. They are asynchronous signals with respect
to UPA and PCI signals. The design of the U2P ASIC was done under the conditions specied in TABLE 8:.
Note:
Worst Case Slow Motive claims operation of the two clock domains at the following max
frequencies; upaclk = 105.9 MHz, psyclk = 67.5 MHz.
PLL Clock Distribution and Characteristics
Figure 5. shows the PLL scheme inside the U2P.
Figure 5. PLL Clock Distribution Circuitry
.
TABLE 8: Internal Timing Characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
upaclk
Operating Frequency, UPA_CLK
3.15V, Tj = 85C
100
MHz
psyclk
Operating Frequency, PSYCLOPS_CLK
3.15V, Tj = 85C
66
MHz
clkskew
Internal Skew and Jitter
- 0.5
0.5
ns
TABLE 9: PLL Characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
upaclk
Operating Frequency, UPA_CLK
40
125
MHz
psyclk
Operating Frequency, PSYCLOPS_CLK
40
85
MHz
clkskew
Internal Skew and Jitter
125MHz
400
ps
100MHz
450
ps
66MHz
500
ps
35MHz
600
ps
CLK+
BIED03T
CLK–
PLL1XSF
N
P
Z
FBIN
FBOUT
REFCLK
FBCLK1X
CLK1X
BYPASS
PLL_BYPASS
JTAG_TCK
Clock select from TAP controller
Clock
Buffers
Internal Clock
Clock
MUX
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