am79c875 Advanced Micro Devices, am79c875 Datasheet - Page 43

• Manufacturer Part Number: am79c875
• Description: Netphy ?lp Low Power Quad 10/100-tx/fx Ethernet Transceiver
• Manufacturer: Advanced Micro Devices

10 Mbps RMII Transmit
t
t
t
t
RS10
RH10
RTP10
TIDLE10
Symbol
TXD[X]_[1:0]
TX_EN[X]
TX_EN[X]
REFCLK
REFCLK
Parameter Description
TX_EN[X], TXD[X]_[1:0] Setup Time to REFCLK Rising Edge
TX_EN[X], TXD[X]_[1:0] Hold time From REFCLK Rising Edge
Transmit Latency TX_EN[X] Sampled by REFCLK to Start of
Packet
Required De-assertion Time Between Packets
TX±
TX±
Figure 25. RMII 10 Mbps Transmit End of Packet Timing
t
RS10
Figure 24. RMII 10 Mbps Transmit Start of Packet
t
RS10
Am79C875
t
TIDLE10
t
RTP10
t
RS10
Min.
240
300
4
2
t
RH10
Max.
360
-
-
-
22236G-27
22236G-26
Unit
ns
ns
ns
ns
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