參數(shù)資料
型號: AM79C940JCW
廠商: Advanced Micro Devices, Inc.
英文描述: Media Access Controller for Ethernet (MACE)
中文描述: 媒體訪問控制器(MACE發(fā)生以太網(wǎng))
文件頁數(shù): 95/122頁
文件大?。?/td> 914K
代理商: AM79C940JCW
AMD
95
Am79C940
AC CHARACTERISTICS (continued)
Parameter
No.
Symbol
IEEE 1149.1 Timing
109
t
TCLK
TCK Period, 50% duty
cycle (+5%)
110
t
su1
TMS setup to TCK
111
t
su2
TDI setup to TCK
112
t
hd1
TMS hold time from TCK
113
t
hd2
TDI hold time from TCK
114
t
d1
TCK
delay to TDO
115
t
d2
TCK
delay to SYSTEM OUTPUT
10BASE-T Transmit Timing
125
t
TETD
Transmit Start of Idle
126
t
TR
Transmitter Rise Time
127
t
TF
Transmitter Fall Time
128
t
TM
Transmitter Rise and Fall
Time Mismatch
129
t
XMTON
XMT# Asserted Delay
130
t
XMTOFF
XMT# De-asserted Delay
131
t
PERLP
Idle Signal Period
132
t
PWLP
Idle Link Pulse Width
133
t
PWPLP
Predistortion Idle Link Pulse Width
134
t
JA
Transmit Jabber Activation Time
135
t
JR
Transmit Jabber Reset Time
136
t
JREC
Transmit Jabber Recovery Time
(Minimum Time Gap Between
Transmitted Packets to Prevent
Jabber Activation)
10BASE-T Receive Timing
140
t
PWNRD
RXD Pulse Width Not to
Turn Off Internal
Carrier Sense
141
t
PWROFF
RXD Pulse Width to Turn Off
VIN > VTHS (min)
142
t
RETD
Receive Start of Idle
143
t
RCVON
RCV# Asserted Delay
144
t
RCVOFF
RCV# De-asserted Delay
Note:
1. Not tested but data available upon request.
Parameter Description
Test Conditions
Min
Max
100
8
5
5
10
30
35
Min
250
Max
350
5.5
5.5
Unit
ns
ns
ns
(10% to 90%)
(90% to 10%)
1
ns
ns
ms
ms
ns
ns
ms
ms
μ
s
100
TBD
24
120
55
150
750
TBD
8
75
45
20
250
1.0
(Note 1)
(Note 1)
VIN > VTHS (min)
136
ns
200
200
ns
ns
ns
ms
t
RON
–50 t
RON
+100
TBD
TBD
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