ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 316

• Manufacturer Part Number: ibm3206k0424
• Description: Ibm Processor For Network Resources
• Manufacturer: ETC-unknow

IBM3206K0424
IBM Processor for Network Resources
11.12: SEGBF Programmable Counter Source Specification
This register determines what event or condition will cause the associated counter to increment.
Length
Type
Address
Power On Value
Restrictions
ATM Transmit Buffer Segmentation (SEGBF)
Page 316 of 676
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31-27
26-25
23-16
Bit(s)
15-8
7-6
5-0
Reserved
24
Reserved.
These bits select the source of the event to be counted. ’00’ selects the cell events that are further defined in bits 23 down
to 0 of this register. ’01’ selects the number of bytes transmitted on a given drop. ’10’ selects the number of frames trans-
mitted on a given drop. The drop is selected by bits seven and six, or all drops can be included by setting bit 24.
This bit, when set, causes the counter to count the specified event for all drops, not just the drop specified in bits seven
and six.
These bits define the data byte that is compared to the result of logically anding the data byte being written to the cell
array at the offset specified in bits 5-0 with the mask in bits 15-8. If there is an exact match, the counter will increment.
These bits define the mask byte to be logically anded with the data byte being written to the cell array.
These bits determine which drop this counter is associated with.
These bits define a byte offset into the cell being built in the segmentation cell array. Zero corresponds to the first byte in
the cell and 63 corresponds to the last byte in the cell. When the segmentation logic copies a byte of data into the cell
array at this offset, the logic compares the byte defined in bits 23-16 to the logical and of the data being written and the
mask defined in bits 15-8 of this register. If an exact match is detected, the counter will be incremented.
Source
Event
32
Read/Write
Counter 0
Counter 1
Counter 2
Counter 3
Counter 0
Counter 1
Counter 2
Counter 3
None
Data Byte
XXXX 14B0
XXXX 14B4
XXXX 14B8
XXXX 14BC
X’000 0803’
X’000 0903’
X’008 0803’
X’002 0203’
Description
Mask Byte
9
8
7
6
5
4
pnr25.chapt05.01
August 14, 2000
Offset
3
Preliminary
2
1
0