參數資料
型號: C3ENPA1-DD
廠商: Motorola, Inc.
元件分類: 網絡處理器
英文描述: C-3e NETWORK PROCESSOR SILICON REVISION A1
中文描述: ? - 3E的網絡處理器硅版本格A1
文件頁數: 80/114頁
文件大?。?/td> 746K
代理商: C3ENPA1-DD
80
CHAPTER 3: ELECTRICAL SPECIFICATIONS
C3ENPA1-DS/D REV 03
MOTOROLA GENERAL BUSINESS INFORMATION
Clock Timing
Specifications
The system clock timing is shown in
Figure 13
and described in
Table37
.
Figure 13
System Clock Timing Diagram
T
sc
T
sh
SCLK
Cycle 1
Cycle 2
Cycle 3
Cycle 4
Cycle 5
SCLKX
CCLKn
T
ccN
T
sl
T
cch
T
ccl
Table 37
System Clock Timing Description
SYMBOL
PARAMETER
MIN
TYP
MAX
UNIT
COMMENT
Tsc
System Cycle Time
3.76
ns
180MHz core clock
Tsh
Sys Clk High Pulse
45
55
Duty cycle*
*
Pulse duty cycle measured at crossing voltage of SCLK/SCLKX
The frequencies specified for CCLK0 - CCLK3 allow full flexibility for the C-3e NP It is also possible to use one
or more CCLK
n
inputs for other frequencies; contact your Motorola representative for more information.
Tsl
Sys Clk Low Pulse
45
55
Duty cycle*
Tcc0
CCLK0 Cycle Time
6.43
ns
Tcc1
CCLK1 Cycle Time
6.43
ns
Tcc2
CCLK2 Cycle Time
6.43
ns
Tcc3
CCLK3 Cycle Time
6.43
ns
Tcch
CCLKm High Time
40%
60%
% cycle pulse is high
Tccl
CCLKm Low Time
40%
60%
% cycle pulse is low
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