
VIA Technologies, Inc.
Preliminary VT6516 Datarsheet
-
62-
03H
MAC media type configuration
bit 0: SPD_10M , value 0: 100Mbps, value 1: 10Mbps
bit 1: HALF_DPX , 1: half duplex, 0: full duplex
bit 2: RCV_FC_DIS , 1: disable receive flow control frame
0: enable receive flow control frame
bit 3: XMT_FC_DIS , 1: disable send flow control frame
0: enable send flow control frame
IO port enable
bit 0: input port enable , 1: input enable, 0: input
disable
bit 1: output port enable , 1: output enable, 0:
output disable
received good packet count
MACCFG [3:0] 0
R/
W
04H
IO_CFG
[1:0] 0
R/
W
10H-
13H
Accounting Event: receiving packets with CRC ok
and packet size between 64 and 1522 (valid
maximum packet size in spite of VLAN disabled or
enabled). Note that the RMON/MIB counter will be
locked during 4-byte continuous register-read, and
the increment (if any) is deferred until read
complete.
received bad packet count
RCV_GO
OD_PKT
[31:0
]
0
R/O
14H-
17H
Formal Definition: "The number of inbound packets
that contained errors preventing them from being
deliverable to a higher-layer protocol."
Accounting Events: (1) receiving valid-length
packets with CRC error, (2) receiving runt packets,
(3) receiving over-length packets
drop packet counter
RCV_BAD
_PKT
[31:0
]
0
R/O
18H-
1BH
Formal Definition: "The total number of events in
which packets were dropped by the probe due to
lack of resources. Note that this number is not
necessarily the number of packets dropped; it is just
the number of times this condition has been
detected."
Accounting Event: input FIFO overrun due to
SDRAM-bandwidth blocking or buffer starvation.
sent good packet count
DROP_PK
T
[31:0
]
0
R/O
1CH-
1FH
Accounting Event: store-and-forward transmission
success without collision
XMT_GO
OD_PKT
[31:0
]
0
R/O