PM3386 Datasheet, PDF (102/315 Pages) PMC-Sierra, Inc – Dual Gigabit Ethernet Controller

RELEASED
DATASHEET
PMC-1991129
ISSUE 7
PM3386
DUAL GIGABIT ETHERNET CONTROLLER
Register 0x120H, 0x140H: PL3IP Channel High Watermark
Bit
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Type
R
R
R
R
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
Function
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
IP_PHWM[3]
IP_PHWM[2]
IP_PHWM[1]
IP_PHWM[0]
Default
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
The PL3IP High Watermark register can be written at any time but is only
updated by using the PL3IP Configuration register.
IP_PHWM[3:0]
The high water mark sets point at which the EGMAC begins to transmit a
PAUSE frame (if enabled). The minimum high watermark is 128 bytes. The
watermark will default to the 8192 bytes.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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