STP2003PQFP Sun Microelectronics, STP2003PQFP Datasheet - Page 26

• Manufacturer Part Number: STP2003PQFP
• Description: PCI I/O Controller
• Manufacturer: Sun Microelectronics

AC C
AC Timing Characteristics have been obtained with operating conditions exceeding the recommended limits.
A 10% voltage variation, 4.5V to 5.5V, is factored into the vendors BCCOM and WCCOM timing libraries and
is specified in Table 10 through Table 13.
TABLE 10: PCI AC Timing Characteristics
T_cyc
T_high
T_low
PCI Inputs
T_su
T_su(ptp)
T_hold
PCI Outputs
T_val
T_val(ptp)
T_on
T_off
1. Static Timing analysis indicates 350ps T_su requirement. Test vector extraction software required 1ns granularity. PCI T_su specification
2. Static Timing analysis shows 250ps T_hold requirement. Test vector extraction software required 1ns granularity. PCI T_hold specification
26
currently being tested to 7.5 ns value.
currently being tested to 0.5 ns value
Symbol
STP2003QFP
HARACTERISTICS
pci_clk Cycle Time
pci_clk High Time
pci_clk Low Time
Input Setup Time to pci_clk - bused
Input Setup Time to pci_clk - pci_gnt_l
Input Hold Time from pci_clk
pci_clk to Signal Valid Delay - bused
pci_clk to Signal Valid Delay - pci_req_l
Float to Active Delay
Active to Float Delay
Tri_Output
clock
Output
Input
PCIO
PCI I/O Controller
Parameter
Figure 3. General Timing Waveforms
T_low
T_su
T_cyc
T_hold
T_on
T_val
T_high
See Note 1
See Note 2
50pF Load
50pF Load
Conditions
T_off
30
11
11
7.5
10
0.5
2
2
2
Min
DC
11
12
28
Max
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
August 2001