Table of Contents
Advertisement
1
0
1s116
31
1
Figure 19-28. Group Address Hash Tables 1-4 (EMACO_GAHT1-EMACO_GAHT4)
Reserved
Group Address Hash Number
19.7.15 Last Source Address High (EMACO_LSAH)
EMACO_LSAH contains the high-order halfword of the source address of the last "good" received
packet. The packet is considered to be "good" if EMAC is programmed to provide this packet to MAL.
1
0
1s116
31
1
Figure 19-29. Last Source Address High Register (EMACO_LSAH)
Reserved
Last Source Address High-Order Halfword
19.7.16 Last Source Address Low (EMACO_LSAL)
EMACO_LSAL contains the low-order word of the source address of the last "good" received packet.
The packet is considered "good" if EMAC is programmed to provide this packet to MAL.
1
0
31
1
Figure 19-30. Last Source Address Low Register (EMACO_LSAL)
' I
0:31
1
Last Source Address Low-Order Word
19.7.17 Inter-Packet
Gap Value Register (EMACO_IPGVR)
EMACO_IPGVR contains the value of one-third of the,inter-packet gap (IPG) for the next packet to be
transmitted. ("Frame" is synonymous with "packet.")
The resolution of each bit is 8-bit times. The minimum value in the register is four, causing a minimum
IPG period of 96-bit times).
19-38
PPC40SGP User's Manual
Preliminary
Advertisement
Chapters
Table of Contents
