LAN9353 Datasheet, PDF (325/523 Pages) Microchip Technology – Interfaces at up to 200Mbps via Turbo MII

LAN9353
10.7.4.4 Buffer Manager Flow Control Resume Level Register (BM_FC_RESUME_LVL)
Register #:
1C03h
Size:
32 bits
This register configures the buffer usage level when a Pause frame with a pause value of 1 is sent.
Bits
Description
31:16
15:8
RESERVED
Resume Level Low
These bits specify the buffer usage level during times when 2 or 3 ports are
active.
Each buffer is 128 bytes.
Note: A port is “active” when 36 buffers are in use for that port.
7:0 Resume Level High
These bits specify the buffer usage level during times when 0 or 1 ports are
active.
Each buffer is 128 bytes.
Note: A port is “active” when 36 buffers are in use for that port.
10.7.4.5 Buffer Manager Broadcast Buffer Level Register (BM_BCST_LVL)
Type
RO
R/W
R/W
Register #:
1C04h
Size:
32 bits
This register configures the buffer usage limits for broadcasts, multicasts and unknown unicasts.
Default
-
03h
07h
Bits
Description
31:8 RESERVED
7:0 Broadcast Drop Level
These bits specify the maximum number of buffers that can be used by
broadcasts, multicasts and unknown unicasts.
Each buffer is 128 bytes.
Type
RO
R/W
Default
-
31h
 2015 Microchip Technology Inc.
DS00001925A-page 325