參數(shù)資料
型號(hào): 82596CA
廠商: Intel Corp.
英文描述: HIGH-PERFORMANCE 32-BIT LOCAL AREA NETWORK COPROCESSOR
中文描述: 高性能的32位局域網(wǎng)協(xié)處理器
文件頁數(shù): 65/77頁
文件大小: 787K
代理商: 82596CA
82596DX/SX
A.C. CHARACTERISTICS
(Continued)
82596SX C-STEP INPUT/OUTPUT SYSTEM TIMINGS
T
C
e
0
§
C to
a
85
§
C, V
CC
e
5V
g
10% (Continued)
These timings assume the C
L
on all outputs is 50 pF unless otherwise specified. C
L
can be 20 pF to 120 pF,
however, timings must be derated.
All timing requirements are given in nanoseconds.
Symbol
Parameter
16 MHz
Notes
Min
Max
T21
HLDA Setup Time
15
1, 2
T22a
HLDA Hold Time
7
1, 2
T23
RESET Setup Time
13
1, 2
T24
RESET Hold Time
4
1, 2
NOTES:
Timings shown are for the 82596CA C-Stepping. For information regarding timings for the 82596CA A1 or B-Step, contact
your local Intel representative.
1. RESET, HLDA, and CA are internally synchronized. This timing is to guarantee recognition at next clock for RESET,
HLDA, and CA.
2. All set-up, hold, and delay timings are at the maximum frequency specification Fmax, and must be derated according to
the following equation for operation at lower frequencies:
Tderated
e
(Fmax/Fopr)
c
T
where:
Tderated
e
Specifies the value to derate the specification.
Fmax
e
Maximum operating frequency.
Fopr
e
Actual operating frequency.
T
e
Specification at maximum frequency.
This calculation only provides a rough estimate for derating the frequency. For more detailed information contact your Intel
sales office for the data sheet supplement.
3. CA is internally synchronized; if the setup and hold times are met then CA needs to be only 2 T1. BREQ and PORT are
not internally synchronized. BREQ must meet setup and hold times and need only be 2 T1 wide.
65
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