AM79C874VC AMD (ADVANCED MICRO DEVICES), AM79C874VC Datasheet - Page 49

• Manufacturer Part Number: AM79C874VC
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM79C874VC

• Lead Free Status / RoHS Status: Not Compliant

MII Signals
22235K
Symbol
t
t
t
t
t
t
t
t
t
t
t
MTS100
MTH100
MTEJ100
MTECRH100
MTECOH100
MTDCRL100
MTDCOL100
MTIDLE100
MTP100
MTWH100
MTWL100
Parameter Description
TX_ER,TX_EN, TXD[3:0] Setup Time to TX_CLK Rising Edge
TX_ER, TX_EN, TXD[3:0] Hold time From TX_CLK Rising Edge
Transmit Latency TX_EN Sampled by TX_CLK to First Bit of /J/
CRS Assert From TX_EN Sampled HIGH
COL Assert From TX_EN Sampled HIGH
CRS De-assert From TX_EN Sampled LOW
COL De-assert From TX_EN Sampled LOW
Required De-assertion Time Between Packets
TX_CLK Period
TX_CLK HIGH
TX_CLK LOW
TXD[3:0]
TX_CLK
TX_EN
TX_ER
CRS
TX±
COL
Figure 18. 100 Mbps MII Transmit Start of Packet Timing
t
MTS100
Table 34. 100 Mbps MII Transmit Timing
D A T A
t
MTWH100
t
t
MTECOH100
MTECRH100
S H E E T
Am79C874
t
MTP100
t
MTEJ100
t
MTWL100
t
MTS100
39.998
Min.
120
12
60
13
18
18
0
-
-
-
/J/
t
MTH100
40.002
Max.
140
200
160
240
40
22
22
-
-
-
22236G-20
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
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