Table 197: Wol Pattern Configuration Register (Offset 0X434); Table 198: Ethernet Transmit Random Backup Register (Offset 0X438); Table 199: Receive Mtu Size Register (Offset 0X43C) - Broadcom BCM5722 Programmer's Manual

Programmer's Guide
10/15/07
WOL P C
ATTERN ONFIGURATION
Bit Field
31:28 Reserved
27:16 ACPI offset
15:10 Reserved
9:0 ACPI Length
E T
THERNET RANSMIT
This register is used to initialize the random backoff interval generator. It is implemented as a 10-bit linear feedback shift
register as follows:
random[9:0] = (random SRL 1) XOR 32l when random 9 = 1 else (random SRL 1) XOR 0
If the random generator is initialized to zero, then it will always remain a zero indicating that a no backoff internal is always
selected. It is recommended that this field be initialized with the same value that is written to the MAC Address Low register
in order to create additional randomness to the initial seed.

Table 198: Ethernet Transmit Random Backup Register (Offset 0x438)

Bit Field
31:10 Reserved
9:0 Random Backoff Seed For half-duplex, initialize with any nonzero seed.
R MTU S
ECEIVE IZE
This register defines the threshold above which a frame will be marked as oversize.
Bit Field
31:16 Reserved
15:0 MTU
Document 5722-PG101-R
R
EGISTER

Table 197: WOL Pattern Configuration Register (Offset 0x434)

Description
–
Offset of a frame where the pattern comparison starts.
–
Specifies the total number of 64-bit double words inside
the MISC_BD memory that are valid for ACPI. For GMII, it
should have a value of 2,4,6,... For MII, it should have a
value of 3,6,9,....
R B
ANDOM ACKOFF
Description
Always 0.
R (O
EGISTER FFSET

Table 199: Receive MTU Size Register (Offset 0x43C)

Description
Always 0.
2-byte field which is the largest size frame that will be
accepted without being marked as oversize.
Bro adco m Co rp or atio n
(O 0 434)
FFSET X
R (O
EGISTER FFSET
0 43C)
X
Init
0
0
0
0x000
0 438)
X
Init
0
0
Init
0
05F2h
Ethernet MAC Control Registers
BCM5722
Access
RO
R/W
RO
R/W
Access
RO
R/W
Access
RO
R/W
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