LAN9313 Datasheet, PDF (359/398 Pages) SMSC Corporation – Three Port 10/100 Managed Ethernet Switch with MII

Three Port 10/100 Managed Ethernet Switch with MII
Datasheet
13.3.4.3 Buffer Manager Flow Control Pause Level Register (BM_FC_PAUSE_LVL)
Register #:
1C02h
Size:
32 bits
This register configures the buffer usage level when a Pause frame or backpressure is sent.
BITS
DESCRIPTION
31:16 RESERVED
15:8 Pause 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 Pause Level High
These bits specify the buffer usage level during times when 1 port is active.
Each buffer is 128 bytes.
Note: A port is “active” when 36 buffers are in use for that port.
TYPE
RO
R/W
R/W
DEFAULT
-
21h
3Ch
SMSC LAN9313/LAN9313i
359
DATASHEET
Revision 1.2 (04-08-08)