ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 90

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

IBM3206K0424
IBM Processor for Network Resources
Field Definitions
The following are the definitions of the LCD fields, grouped by major function. All reserved fields should be set
to zero.
Common Field Definitions
Packet Header
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1. Software should set up this field.
Field Name
cutThruSel
hostData
ipWrd0-3
rxPoolId
aalType
ppMode
rxqNum
rxOffset
state
stat0
stat1
Specifies the AAL for this LCD. The following are the valid values:
0000 = Raw Mode
0001 = Raw Mode - Early Drop
0101 = AAL5
0110 = AAL5 - 54-Byte Mode
0111 = Packet
Specifies the post processing mode for this LCD. The following are the valid values:
00 = Normal
01 = Routed
10 = Scatter/Cut-Through
11 = Reserved
This specifies the reassembly state for this LCD. This field is used by the IBM3206K0424, but in order to
receive cells, an LCD must be initialized to idle state. The following are the valid values:
00 = Down State
01 = Idle State
10 = Reassembling State
11 = Error State
Specifies a cut-through configuration. The cut-through configuration specifies a receive queue to get a
descriptor from, a DMA queue to enqueue the descriptor to, and a set of cut-through flags.
Specifies to which receive queue normal events should be posted. Note: some events may be routed to
the error queue based on your RXQUE setup.
Specifies which POOL ID should be used when getting buffers for received packets.
Specifies the offset into the IBM3206K0424 buffer where the received packet should be placed. A value
of ‘0’ is equivalent to 256 bytes.
LC statistic word zero. Default counts the total users cells with CLP=0 received on this LC. For accurate
counts, this should be initialized to zero.
LC statistic word one. Default counts the total users cells received on this LC. For accurate counts, this
should be initialized to ‘0’.
If enabled, the contents of this field are placed in packet of each received packet for this LCD. One use of
this is to place a correlator to a host-specific data structure for this LCD.
When TCP/IP Verification is enabled, these words are used by the IBM3206K0424 to store state between
cells for the TCP/IP verification process. The frameType field specifies an offset for the checksum nano-
program. This field is used to jump to a specific algorithm to find the IP header. The skipCount field allows
the user to specify a fixed amount that is always skipped before looking for the IP header using the spec-
ified algorithm. The remainder of the words should be initialized to ‘0’.
Field Description
pnr25.chapt03.01
August 14, 2000
Preliminary
Note
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