IP1000A LF
Preliminary Data Sheet
33/75
July 5, 2005
Copyright © 2005, IC Plus Corp.
IP1000A LF-DS-R08
3.2.1.4
BcstOctetXmtOk
Class............................. Ethernet MIB Statistics
I/O Base Address ......... IoBaseAddress register value
Memory Base Address . MemBaseAddress register value
Address Offset .............. 0xD8
Default Value ................ 0x00000000
Access Rule.................. Double Word
Width ............................ 32 bits
Bit
BIT Name
BIT Description
Type
HW
Reset
SW
Reset
31..0
BcstOctetXmtOk
Broadcast Octets Transmitted OK is a count of
data and padding octets of frames successfully
transmitted
to
a
the
broadcast
address
(0xFFFFFFFFFFFF). BcstOctetXmtOk will wrap
around to zero after reaching 0xFFFFFFFF.
All IP1000A LF byte and octet count based
statistic registers include the VLAN tag (4 octets)
regardless of whether or not the IP1000A LF is
adding (on frame transmission) or removing (on
frame reception) the VLAN tag automatically. An
UpdateStats interrupt (UpdateStats bit within the
IntStatus
register)
will
occur
when
BcstOctetXmtOk reaches a value of 0xC0000000.
BcstOctetXmtOk is enabled by writing a logic 1 to
the StatisticsEnable bit in the MACCtrl register,
and a logic 0 to the BcstOctetXmtOk bit within the
StatisticsMask register.
R/W
3.2.1.5
CarrierSenseErrors
Class............................. Ethernet MIB Statistics
I/O Base Address ......... IoBaseAddress register value
Memory Base Address . MemBaseAddress register value
Address Offset .............. 0xF8
Default Value ................ 0x0000
Access Rule.................. Word
Width ............................ 16 bits
Bit
BIT Name
BIT Description
Type
HW
Reset
SW
Reset
15..0
CarrierSenseErrors Carrier Sense Errors counts the number of times
that
the
carrier
sense
signal
(CRS)
was
de-asserted (a logic 0) during the transmission of
a frame without collision. The carrier sense signal
is not monitored for the purpose of this statistic
until
after
the
preamble
and
start-of-frame
delimiter fields of the Ethernet frame have been
transmitted. CarrierSenseErrors will wrap around
to zero after reaching 0xFFFF. See IEEE 802.3
Clause 30.3.1.1.13.
An UpdateStats interrupt (UpdateStats bit within
R/W
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