ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 65

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

Preliminary
Logical Channel Data Structure
pnr25.chapt03.01
August 14, 2000
Offset
0x00
0x50
0x78
128-byte LCD
Transmit
Receive
Portion
Portion
Data
User
Scheduling Information
Shared Information
(0-3) 64-bit words
(3) 64-bit words
CSKED/SEGBF
(2) 64-bit words
Segmentation
Information
CSKED
SEGBF
On ABR Connections, the ABR code running in PCORE uses ten
bytes of the LCD starting at offset 0x46 for managing the connection.
If LCD-based memory management is used,
a 64-bit section with the following layout is
inserted at byte offset 18x:
Four different formats, determined by whether
scheduling is based on virtual path parameters or is
configured for ABR. See Scheduling Portion of a
Transmit Descriptor.
Threshold Threshold Pool
total user cells
total user cells
total user cells
Tx Length
Segmentation Pointer
16
1
16
OAM Data
OAM Data
OAM Data
32
32
32
32
32
32
32
16
Misc. Flags
16
2
MPEG-2 or ABR Data
ABR Code Variables
Unused
LCD Cell Status
LCD Cell Status
LCD Cell Status
56
16
IBM Processor for Network Resources
ID1
4
64
Pool
ID1
Fixed Blocking Data
Fixed Blocking Data
Fixed Blocking Data
4
ATM Header
Partial CRC
to be transmitted
Bytes waiting
total user cells
total user cells
total user cells
32
32
32
32
32
32
32
32
32
with CLP=0
with CLP=0
with CLP=0
Variables
24
ABR
8
IBM3206K0424
Page 65 of 676
Packet Header
portion
for all
types
types
other
code
ABR
AAL
type
AAL
AAL
0x7
0x4
and
0x6
for
for