參數(shù)資料
型號: AM79C940KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: Media Access Controller for Ethernet (MACE)
中文描述: 4 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP10
封裝: PLASTIC, QFP-100
文件頁數(shù): 93/122頁
文件大小: 914K
代理商: AM79C940KCW
AMD
93
Am79C940
AC CHARACTERISTICS (continued)
Parameter
No.
Symbol
AUI Timing
53
t
DOTD
XTAL1 (externally driven) to
DO
±
output
54
t
DOTR
DO
±
rise time (10% to 90%)
55
t
DOTF
DO
±
fall time (10% to 90%)
56
t
DOETM
DO
±
rise and fall mismatch
57
t
DOETD
DO
±
End of Transmit Delimiter
58
t
PWRDI
DI
±
pulse width to reject
59
t
PWODI
DI
±
pulse width to turn on
internal DI carrier sense
60
t
PWMDI
DI
±
pulse width to maintain
internal DI carrier sense on
61
t
PWKDI
DI
±
pulse width to turn internal
DI carier sense off
62
t
PWRCI
CI
±
pulse width to reject
63
t
PWOCI
CI
±
pulse width to turn on
internal SQE sense
64
t
PWMCI
CI
±
pulse width to maintain
internal SQE sense on
65
t
PWKCI
CI
±
pulse width to turn internal
SQE sense off
66
t
SQED
CI
±
SQE Test delay from
O
±
inactive
67
t
SQEL
CI
±
SQE Test length
79
t
CLSHI
CLSN high time
80
t
TXH
TXEN
or DO
±
hold time from
CLSN
DAI Port Timing
70
t
TXEND
STDCLK
delay to
TXEN
72
t
TXDD
STDCLK
delay to TXDAT
±
change
80
t
XH
TXEN
or TXDAT
±
hold time
from CLSN
95
t
DOTF
Mismatch in STDCLK
to
TXEN
and TXDAT
±
change
96
t
TXDTR
TXDAT
±
rise time
97
t
TXDTF
TXDAT
±
fall time
98
t
TXDTM
TXDAT
±
rise and fall mismatch
99
t
TXENETD
TXEN
End of Transmit Delimiter
100
t
FRXDD
First RXDAT
delay to RXCRS
101
t
LRXDD
Last RXDAT
delay to RXCRS
102
t
CRSCLSD
RXCRS
delay to CLSN
(
TXEN
= 0)
Parameter Description
Test Conditions
Min (ns)
Max (ns)
100
5.0
5.0
1
375
15
2.5
2.5
200
|input| > |V
ASQ
|
|input| > |V
ASQ
|
45
|input| > |V
ASQ
|
45
136
|input| > |V
ASQ
|
200
|input| > |V
ASQ
|
|input| > |V
ASQ
|
10
26
|input| > |V
ASQ
|
26
90
|input| > |V
ASQ
|
160
|input| > |V
ASQ
|
|input| > |V
ASQ
|
t
STDC
+30
32*t
STDC
|input| > |V
ASQ
|
96*t
STDC
C
L
= 50 pF
C
L
= 50 pF
70
70
32*t
STDC
96*t
STDC
15
See Note 1
See Note 1
See Note 1
5
5
1
250
350
100
120
100
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