STPCI2 STMicroelectronics, STPCI2 Datasheet - Page 46

• Manufacturer Part Number: STPCI2
• Description: STPC ATLAS DATASHEET - X86 CORE PC COMPATIBLE SYS
• Manufacturer: STMicroelectronics

ELECTRICAL SPECIFICATIONS
4.5. AC CHARACTERISTICS
This section lists the AC characteristics of the
STPC interfaces including output delays, input
setup requirements, input hold requirements and
output float delays. These measurements are
based on the measurement points identified in
Figure 4-1
reference level VREF and other reference levels
Note: Refer to
46/111
CLK:
OUTPUTS:
INPUTS:
LEGEND:
Figure 4-1. Drive Level and Measurement Points for Switching Characteristics
Table 4-9. Drive Level and Measurement Points for Switching Characteristics
and
Symbol
V
V
V
Figure
REF
Figure
IHD
ILD
A - Maximum Output Delay Specification
B - Minimum Output Delay Specification
C - Minimum Input Setup Specification
D - Minimum Input Hold Specification
Valid
Output n
4-1.
4-2. The rising clock edge
B
A
MIN
Issue 1.0 - July 24, 2002
Value
1.5
2.5
0.0
MAX
V
are shown in
signals must cross these levels during testing.
Figure 4-1
setup and hold times (C and D). Input setup and
hold times (C and D) are specified minimums,
defining the smallest acceptable sampling window
a synchronous input signal must be stable for
correct operation.
Ref
C
Valid
Output n+1
Valid
Input
Tx
shows output delay (A and B) and input
Table 4-9
D
below. Input or output
Units
V
V
V
V
V
V
Ref
ILD
IHD
V
V
V
Ref
ILD
IHD