Buffer Manager Registers
BCM5718 Programmer’s Guide
Broadcom
®
January 29, 2016 • 5718-PG108-R
Page 429
Buffer Manager Status Register (offset: 0x4404)
MBUF Pool Base Address Register (offset: 0x4408)
The MBUF Pool Base Address specifies the beginning of the MBUF.
BM Test mode
3
RW
0
Buffer Manager Test mode. Must be set to 0 for
normal operation.
Attention Enable
2
RW
0
When this bit is set to 1, an internal attention is
generated when an error occurs.
Enable
1
RW
1
This bit controls whether the Buffer Manager is
active or not.
When set to 0 it completes the current operation
and cleanly halts. Until it is completely halted, it
remains one when read.
Reset
0
RW
0
When this bit is set to 1, the Buffer Manager state
machine is reset. This is a self-clearing bit.
Name
Bits
Access
Default
Value
Description
BM Test mode
31:5
RO
–
MBUF Low Attention
4
RO
–
MBUF Low Attention Status
Reserved
3
RO
0
–
Error
2
RO
–
Buffer Manager Error Status
Reserved
1:0
RO
0
–
Name
Bits
Access
Default
Value
Description
Reserved
31:23
RO
0
–
MBUF Base Address
22:0
RW
0xA000h
Specifies beginning of the MBUF for receive
packet.
The base address will ignore the lower seven
bits, thus aligning the beginning of the MBUF
pool on a 128-byte boundary.
Name
Bits
Access
Default
Value
Description