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(yè)數(shù): 22/34頁(yè)
文件大小: 476K
代理商: STP2223BGA
29
UPA to PCI Interface
U2P
STP2223BGA
July 1997
Note: Measurement conditions for Tval (max) rise = 25 Ohm/10pf parallel to ground, and for Tval (max) fall = 10pf to ground,
25 Ohm to VDD. Refer to PCI 2.1 Specication, Chapter 7, for full AC specications on output buffers.
TABLE 12: PCIA AC Timing Characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
T_cyc
pci_clk Cycle Time
15
30
ns
T_high
pci_clk High Time
6
ns
T_low
pci_clk Low Time
6
ns
PCI Inputs
T_su
Input Setup Time to pci_clk - bused
5
ns
T_su(ptp)
Input Setup Time to pci_clk - pci_req_
5
ns
T_hold
Input Hold Time from pci_clk
0
ns
PCI Outputs
@ 66 MHz
T_val
pci_clk to Signal Valid Delay - bused
(See Note)
1
6
ns
T_val(ptp)
pci_clk to Signal Valid Delay - pci_req_l
(See Note)
1
6
ns
T_on
Float to Active Delay
(See Note)
1
ns
T_off
Active to Float Delay
14
ns
PCI Outputs
@ 33 MHz
T_val
pci_clk to Signal Valid Delay - bused
(See Note)
2
11
ns
T_val(ptp)
pci_clk to Signal Valid Delay - pci_req_l
(See Note)
2
12
ns
T_on
Float to Active Delay
(See Note)
2
ns
T_off
Active to Float Delay
28
ns
TABLE 13: PCIB AC Timing Characteristics
Symbol
Parameter
Conditions
Min
Max
Unit
T_cyc
pci_clk Cycle Time
30
DC
ns
T_high
pci_clk High Time
11
ns
T_low
pci_clk Low Time
11
ns
PCI Inputs
T_su
Input Setup Time to pci_clk - bused
7
ns
T_su(ptp)
Input Setup Time to pci_clk - pci_req_
12
ns
T_hold
Input Hold Time from pci_clk
0
ns
PCI Outputs
T_val
pci_clk to Signal Valid Delay - bused
(See Note)
2
11
ns
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