Ethernet MAC (EMAC) RegistersBCM5718 Programmer’s Guide
Broadcom®
January 29, 2016 • 5718-PG108-R Page 310
EMAC Mode Register (offset: 0x400)
Name Bits Access
Default
Value
Description
Reserved 31:30 RO 0 –
Mac loop back mode control 29 RW 1 1: gate off outgoing TX data path when EMAC
loopback mode is enabled.
0: TX data will show up in normal functional path
as well as MAC loopback path.
Enable APE TX path 28 RW 0 This bit must be written a 1 for the EMAC to
transmit APE packets.
Enable APE RX path 27 RW 0 This bit must be written a 1 for APE subsystem to
receive packets from the EMAC
Free Running ACPI 26 RW 0 When this bit is set, the ACPI state machine will
continue running when a match is found. When
this bit is clear, the ACPI state machine will halt
when a match is found.
Halt Interesting packet PME 25 RW 0 When this bit is set, the WOL signal will not be
asserted on an interesting packet match.
Keep Frame in WOL 24 RW 0 –
Enable FHDE 23 RW 0 Enable receive Frame Header DMA engine.
Must be set for normal operation.
Enable RDE 22 RW 0 Enable RDMA engine.
Must be set for normal operation.
Enable TCE 21 RW 0 Enable Transmit DMA engine.
Reserved 20 RO 0 –
ACPI Power-on Enable 19 RW 0 Enable Wake on LAN filters when in power-down
mode
Magic Packet Detection
Enable
18 RW 0 Enable Magic Packet detection
Send Config Command 17 RW 0 Send config commands when in TBI mode
Flush TX statistics 16 RW 0 Write transmit statistics to external memory.
This bit is self-clearing.
Clear TX statistics 15 RW 0 Clear transmit statistics internal RAM.
This bit is self-clearing.
Enable TX Statistics 14 RW 0 Enable transmit statistics external updates
Flush RX Statistics 13 RW 0 Write receive statistics to external memory.
This bit is self-clearing.
Clear RX Statistics 12 RW 0 Clear receive statistics internal RAM.
This bit is self-clearing.
Enable RX Statistics 11 RW 0 Enable receive statistics external updates.
Reserved 10 RO 0 –
Max Defer 9 RW 0 Enable Max Deferral checking statistic.
Enable TX Bursting 8 RW 0 Enable transmit bursting in Gigabit half-duplex
mode.
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