AM79C940JC/W AMD [Advanced Micro Devices], AM79C940JC/W Datasheet - Page 103
AM79C940JC/W
Manufacturer Part Number
AM79C940JC/W
Description
Manufacturer
AMD [Advanced Micro Devices]
Datasheet
1.AM79C940JCW.pdf
(144 pages)
- Current page: 103 of 144
- Download datasheet (2Mb)
AC WAVEFORMS
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
(EDSEL = 0)
(EDSEL = 1)
(EDSEL = 0)
(EDSEL = 1)
DBUS[15:0]
RDTREQ
ADD[4:0]
TC = 0
BE0-1
SCLK
SCLK
SCLK
SCLK
R/W
EOF
EOF
DTV
CS
S2
S2
Host System Interface—3-Cycle Transmit FIFO/Register Write Timing
TL
TL
S3
S3
Host System Interface–RDTREQ Read Timing
31
33
TH
TH
S0
S0
S0
S0
S1
S1
S1
S1
37
S2
S2
W0
W0
Word N
44
48
W1
W1
49
S2
S2
S3
S3
39
S0
S0
S0
S0
S1
S1
S1
S1
40
W0
W0
Word N+1
S2
S2
W1
W1
32
S3
S3
34
.
S2
S2
S0
S0
S3
S3
Note 1
S0
S0
42
S1
S1
Last Byte
or Word
W0
W0
45
W1
W1
S0
S0
43
34
S2 S3 S0
S2 S3 S0
S1
S1
41
S2
S2
16235D-28
16235D-29
S3
S3
38
103
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