PM7384 FREEDM-84P672
DATA SHEET
PMC-1990445
ISSUE 5
FRAME ENGINE AND DATA LINK MANAGER 84P672
Register 0x508 : PMON Transmit FIFO Underflow Count
Bit
Type
Function
Default
Bit 31
to
Unused
XXXXH
Bit 16
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
UF[15]
UF[14]
UF[13]
UF[12]
UF[11]
UF[10]
UF[9]
UF[8]
UF[7]
UF[6]
UF[5]
UF[4]
UF[3]
UF[2]
UF[1]
UF[0]
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
This register reports the number of transmit FIFO underflow events in the
previous accumulation interval.
Note
This register is not byte addressable. Writing to this register modifies all the bits
in the register. Byte selection using byte enable signals (CBEB[3:0]) are not
implemented. However, when all four byte enables are negated, no access is
made to this register.
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
264
PMC [ PMC-SIERRA, INC ]
