Broadcom BCM5722 - Table 214: Ethernet Type Matching Value Register (Offset 0 X510); Table 215: Protocol ID Offset Register (Offset 0 X514)

BCM5722 Programmer’s Guide
10/15/07
Broadcom Corporation
Page 259 Ethernet MAC Control Registers Document 5722-PG101-R
ETHERNET TYPE MATCHING VALUE REGISTER (OFFSET 0X510)
PROTOCOL ID OFFSET REGISTER (OFFSET 0X514)
Note: The BCM5722 Ethernet controller generates a pause frame when the Low Watermark Max Receive Frames
value has been reached. When a pause frame has been generated, the TX data path also stalls (assuming it has
not already reached the value specified by the “Read DMA MBUF Low Watermark Register (Offset 0x4410)” on
page 307), even though no pause frame was received from the Ethernet link partner.
Note: This register is applicable to the BCM5906 device only.
Table 214: Ethernet Type Matching Value Register (Offset 0X510)
Bit Field Description Init Access
31:24 Reserved Reserved 0 R/W
23:16 Protocol ID Value Specified the Protocol ID Value to be matched for the
received Time Sync Packet.
0x00 R/W
15:0 EtherType Value Specified the EtherType Value to be matched for the
received Time Sync Packet.
0x0000 R/W
Table 215: Protocol ID Offset Register (Offset 0x514)
Bit Field Description Init Access
31:4 Reserved Reserved 0 R/W
3:0 Protocol ID Offset Define the Byte Offset of the 8 bits Protocol ID value starting
from the end of EtherType.
0x0 R/W