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參數(shù)資料
| 型號： | AM79C981 |
| 廠商： | Advanced Micro Devices, Inc. |
| 英文描述： | Integrated Multiport Repeater Plus⑩ (IMR+⑩) |
| 中文描述： | 綜合多端中繼器加⑩（死亡率⑩） |
| 文件頁數(shù)： | 28/40頁 |
| 文件大小： | 347K |
| 代理商： | AM79C981 |
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AMD
PRELIMINARY
1–98
Am79C981
SWITCHING CHARACTERISTICS (continued)
Parameter
Symbol
Parameter Description
Test Conditions
Min
Max
Unit
Expansion Port (Continued)
t
DJSET
DAT/JAM setup time
10
–
ns
t
DJHOLD
DAT/JAM hold time
14
–
ns
t
CASET
COL
/
ACK
setup time
5
–
ns
t
CAHOLD
COL
/
ACK
hold time
14
–
ns
t
MHSET
TEST setup time with respect to
RST
to enter Minimum Hub Mode
200
–
ns
t
MHHLD
TEST hold time with respect to
RST
to enter Minimum Hub Mode
0
100
ns
t
SCLKSET
SI, SCLK set up time with respect to X1
50
–
ns
t
SCLKHLD
SI, SCLK hold time with respect to X1
50
–
ns
AUI Port
t
DOTD
X1 rising edge to DO toggle
–
30
ns
t
DOTR
DO+,DO- rise time (10% to 90%)
2.5
5.0
ns
t
DOTF
DO+,DO- fall time (90% to 10%)
2.5
5.0
ns
t
DORM
DO+,DO- rise and fall time mismatch
–
1.0
ns
t
DOETD
DO+/- End of Transmission
275
375
ns
t
PWODI
DI pulse width accept/reject
threshold
|V
IN
| > |V
ASQ
|
(Note 3)
15
45
ns
t
PWKDI
DI pulse width maintain/turn-off
threshold
|V
IN
| > |V
ASQ
|
(Note 4)
136
200
ns
t
PWOCI
CI pulse width accept/reject
threshold
|V
IN
| > |V
ASQ
|
(Note 5)
10
26
ns
t
PWKCI
CI pulse width maintain/turn-off
threshold
|V
IN
| > |V
ASQ
|
(Note 6)
90
160
ns
Twisted Pair Ports
t
TXTD
X1 rising edge to TXD+,TXP+
TXD-,TXP- transition delay
–
50
ns
t
TR
TXD+,TXD-,TXP+,TXP- rise time
–
20
ns
t
TF
TXD+,TXD-,TXP+,TXP- fall time
–
20
ns
t
TM
TXD+,TXD-,TXP+,TXP- rise
and fall time mismatch
–
6
ns
t
TETD
Transmit End of Transmission
275
375
ns
t
PWKRD
RXD pulse width maintain/turn-off
threshold
|V
IN
| > |V
THS
|
(Note 7)
130
200
ns
t
PERLP
Idle signal period
8
24
ms
t
PWLP
Idle Link Test pulse width (TXD+)
75
120
ns
t
PWPLP
Idle Link Test pulse width (TXP+,TXP-)
40
60
ns
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AM79C981JC | Integrated Multiport Repeater Plus⑩ (IMR+⑩) |
| AM79C982 | basic Integrated Multiport Repeater (bIMR) |
| AM79C982-4JC | basic Integrated Multiport Repeater (bIMR) |
| AM79C982-8JC | basic Integrated Multiport Repeater (bIMR) |
| AM79C983AKC | Integrated Multiport Repeater 2 (IMR2⑩) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AM79C981JC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:Integrated Multiport Repeater Plus⑩ (IMR+⑩) |
| AM79C982 | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:basic Integrated Multiport Repeater (bIMR) |
| AM79C982-4JC | 制造商:Advanced Micro Devices 功能描述:LAN HUB CONTROLLER, 84 Pin, PLCC |
| AM79C982-8JC | 制造商:AMD 制造商全稱:Advanced Micro Devices 功能描述:basic Integrated Multiport Repeater (bIMR) |
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