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| 型號： | STPCE1 |
| 英文描述： | STPC ELITE DATASHEET / X86 CORE GENERAL PURPOSE PC COMPATIBLE SYSTEM ON CHIP |
| 中文描述： | STPC精英部件/ x86內(nèi)核PC兼容的通用目的片上系統(tǒng) |
| 文件頁數(shù)： | 36/87頁 |
| 文件大?。?/td> | 1356K |
| 代理商： | STPCE1 |
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ELECTRICAL SPECIFICATIONS
36/87
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
Release 1.3 - January 29, 2002
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
and
Figure 4-2
. The rising clock edge
reference level VREF and other reference levels
are shown in
Table 4-7
below. Input or output
signals must cross these levels during testing.
Figure 4-1
shows output delay (A and B) and input
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.
Note: Refer to
Figure 4-1
.
Table 4-7. Drive Level and Measurement Points for Switching Characteristics
Symbol
V
REF
V
IHD
V
ILD
Value
1.5
2.5
0.0
Units
V
V
V
Figure 4-1. Drive Level and Measurement Points for Switching Characteristics
CLK:
V
Ref
V
ILD
V
IHD
Tx
LEGEND:
A - Maximum Output Delay Specification
B - Minimum Output Delay Specification
C - Minimum Input Setup Specification
D - Minimum Input Hold Specification
V
Ref
Valid
Input
Valid
Output n+1
Valid
Output n
OUTPUTS:
INPUTS:
MAX
MIN
A
B
C
D
V
Ref
V
ILD
V
IHD
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