IBM PowerPC 405GP User Manual

The example in Figure 19-14 shows that the received individual address maps into category 24, and
that bit 8
in EMACO_IAHT2 is set. The match indication is activated and the packet should be
accepted.
o
16
Destination Address
1516
31 16
CRC
Generator
When Match
= 1, Packet is accepted.
When Match
= 0, Packet is rejected.
Individual Address Filter
31 32
31 16
47 48
31 16
32-Bit Resultant CRC
o 5
6
Select
Figure 19-14. Ethernet Address Filter Op~ration
63
31
Individual Address Filter
o 63
I I
Match
19.7 EMAC Registers
This section describes the EMAC registers. The EMAC registers are accessed through the OPB.
Access to the registers should be word-aligned.
Table 19-5. EMAC Register Summary
Power-on
Register Name Address
Write Access
Reset
Value Access Page
EMACO_MRO
OxEF600800 See description in "Scenario 1" OxCOOOOOOO
RIW 19-27
on page 19-45
EMACO_MR1
OxEF600804
Reset
OxOOOOOOOO RIW 19-25
EMACO_TMRO
OxEF600808 See description on page 19-27 OxOOOOOOOO
RIW 19-27
EMACO_TMR1
OxEF60080C See description on page 19-28 Ox380FOOOO RIW
19-28
EMACO_RMR
OxEF600810 Reset OxOOOOOOOO RIW
19-29
EMACO_ISR
OxEF600814 Always OxOOOOOOOO RIW
19-30
Note:
Refer
to "Power-Up and Initialization" on page 19-44 for definitions of letters in the Write Access Mode
column.
Preliminary Ethernet Media Access Controller 19-23

IBM PowerPC 405GP Specifications

General

Brand	IBM
Model	PowerPC 405GP
Category	Computer Hardware
Language	English