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AM79C940KC/W Datasheet(PDF) 103 Page - Advanced Micro Devices

No. de pieza AM79C940KC/W
Descripción Electrónicos  Media Access Controller for Ethernet (MACE??
PDF  144 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C940KC/W Datasheet(HTML) 103 Page - Advanced Micro Devices

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103
34
Word N
Word N+1
Last Byte
or Word
41
32
42
31
S3
S2
S1
S0
TH
TL
S0
S2
S1
S3
S1
S0
W1
W0
W1
W0
S2
S3
S0
W1
W0
SCLK
(EDSEL = 1)
R/W
DTV
EOF
DBUS[15:0]
ADD[4:0]
BE0-1
TC = 0
33
48
49
37
34
43
38
S3
S2
S1
S0
TH
TL
S0
S2
S1
S3
S1
S0
W1
W0
W1
W0
S2
S3
S0
W1
W0
SCLK
(EDSEL = 0)
CS
AC WAVEFORMS
Host System Interface—3-Cycle Transmit FIFO/Register Write Timing
16235D-28
EOF
RDTREQ
39
44
SCLK
(EDSEL = 1)
S0
S2
S1
S3
S2
S1
S0
S2
S1
S3
S0
S0
S3
S2
45
Note 1
40
SCLK
(EDSEL = 0)
S0
S2
S1
S3
S2
S1
S0
S2
S1
S3
S0
S0
S3
S2
Note: Once the host detects the EOF output active from the MACE device (S2/S3 edge), if no other receive packet exists
in the RCVFIFO which meets the assert conditions for RDTREQ, the MACE device will deassert RDTREQ within 4 SCLK
cycles (S0/S1 edge). This is consistent for both 2 or 3 cycle read operations.
16235D-29
Host System Interface–RDTREQ Read Timing



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