KS8993F-EVAL Micrel Inc, KS8993F-EVAL Datasheet - Page 84

• Manufacturer Part Number: KS8993F-EVAL
• Description: EVAL KIT EXPERIMENTAL KS8993F
• Manufacturer: Micrel Inc

Specifications of KS8993F-EVAL

• Lead Free Status / RoHS Status: Not applicable / Not applicable

“All Port Dropped Packet” MIB Counters are read using indirect memory access. The address offsets for these
counters are shown in the following table:
Examples:
1) MIB counter read (read port 1 “Rx64Octets” counter)
2) MIB counter read (read port 2 “Rx64Octets” counter)
Micrel, Inc.
May 2006
Write to reg. 110 with 0x1c (read MIB counters selected)
Write to reg. 111 with 0x0e (trigger the read operation)
Then
Read reg. 117 (counter value 30-24) // If bit 30 = 0, restart (reread) from this register
Read reg. 118 (counter value 23-16)
Read reg. 119 (counter value 15-8)
Read reg. 120 (counter value 7-0)
Write to reg. 110 with 0x1c (read MIB counter selected)
Write to reg. 111 with 0x2e (trigger the read operation)
Then
Read reg. 117 (counter value 30-24) // If bit 30 = 0, restart (reread) from this register
Read reg. 118 (counter value 23-16)
Read reg. 119 (counter value 15-8)
Read reg. 120 (counter value 7-0)
Bit
30-16
15-0
0x1D
0x1E
0x1F
Offset
0x100
0x101
0x102
0x103
0x104
0x105
Name
Reserved
Counter values
Table 16: “All Port Dropped Packet” MIB Counters Indirect Memory Offsets
TxExcessiveCollision
TxSingleCollision
TxMultipleCollision
Counter Name
Port1 TX Drop Packets
Port2 TX Drop Packets
Port3 TX Drop Packets
Port1 RX Drop Packets
Port2 RX Drop Packets
Port3 RX Drop Packets
Table 15: Format of “All Port Dropped Packet” MIB Counters
R/W
N/A
RO
A count of frames for which Tx fails due to excessive collisions
Successfully Tx frames on a port for which Tx is inhibited by
exactly one collision
Successfully Tx frames on a port for which Tx is inhibited by
more than one collision
Counter value
Description
Reserved
Description
TX packets dropped due to lack of resources
TX packets dropped due to lack of resources
TX packets dropped due to lack of resources
RX packets dropped due to lack of resources
RX packets dropped due to lack of resources
RX packets dropped due to lack of resources
84
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