IBM PowerPC 405GP - Page 557

RLWM
RHWM
..
..
1
0
151
1
6
24
125
Figure 19·34. Receive Low/High Water Mark Register (EMACO_RWMR)
0:8 RLWM Receive Low Water Mark
9:15
..... : ...
Reserved
16:24 RHWM Receive High Water Mark
25:31
Reserved
..
19.7.21 Number of Octets Transmitted (EMACO_OCTX)
Figure 19·35. Number of Octets Transmitted (EMACO_OCTX)
0:31
OCTX Number of octets (bytes) transmitted.
This
field is Read-Only.
19.7.22 Number of Octets Received (EMACO_OCRX)
Figure 19·36. Number of Octets Received (EMACO_OCRX)
0:31
OCRX Number of octets (bytes) received. This field is Read-Only.
19.8 Mil Interface
EMAC implements all Mil interface functionality in accordance with Clause 22 in the IEEE Std.
802.3u.
31
1
The Mil interface is a Reconciliation Sublayer interface which allows a variety of PHYs to be attached
to the EMAC Ethernet MAC without future upgrade
problems.
19.8.1 Mil Station Management Interface
The EMAC Mil station management unit (STA) implements a specific protocol and a special packet
format
to exchange management packets with the registers of the attached PHY device. EMAC
19-42
PPC405GP User's
Manual Preliminary