ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 251

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

Preliminary
Virtual Address Buffer Map
pnr25.chapt04.01
August 14, 2000
16 bits
Buffer
Index
Implicit
256
Byte
16 bits
Virtual Address.
Index Implicit
Buffer Index
Size(4) 0
Pool
Id
0000
Segment
Decode
Zero
Yes?
Base Address
Register
Buffer
Size(0)
BRB0
Base Address
Register
Buffer
Size(0)
BRB0
Base Address
Register
Buffer
Size(0)
BRB0
Base Address Registers
16 bits
Buffer
Index
1
Buffer
Index
Size(0)
256
Byte
Segment
Decode
One
Yes?
2 bits
Base Address
Register
Buffer
Map
BRBM
Base Address
Register
Buffer
Size(0)
BRB0
Base Address
Register
Buffer
Size(0)
BRB0
16 bits
Buffer
Index
2
Buffer
Index
Size (0)
256
Byte
2 bits
No. of bits for
largest Packet
Size(17 max)
Packet Address
Region
Segment
Decode
Two
Yes?
16 bits
Buffer
Index
0
Buffer
Index
Size (1)
1024
Byte
2 bits
Segment
Decode
Three
Yes?
16 bits
Pool
Id
0000
Buffer
Index
Size(2)
4096
Byte
2 bits
Segment
Decode
Four
Yes?
16 bits
BRB0 + Shifted
Buffer Index 0 +
Offset into PKT
BRB0 + Shifted
Buffer Index 2
Offset into PKT
BRB2 + Shifted
Buffer Index 0 +
Offset into PKT
BBR3 + Shifted
Buf. Index Last +
Offset into PKT
BRBM + Shifted
Buffer Index 0 +
Offset into Map
BRB4 + Shifted
Buffer Index 0 +
Offset into PKT
Buffer
Index
4
BBR2 + Shifted
Buffer Index 4
Offset into PKT
Buffer
Index
Size(3)
16384
Byte
2 bits
Segment
Decoder
16 bits
Buffer
Index
Last
Segment
Decode
Fourteen
Yes?
Unused
2 bits
Buffer,Size(4) 256 Base Index Zero
Buffer, Size(4) 256 Index One
Buffer, Size(4) 256 Index Two
...
Buffer, Size(4) 256 Index N
Skip to next buffer size base address
Buffer, Size(0) 256 Base Index Zero
Buffer, Size(0) 256 Index One
Buffer, Size (0) 256 Index Two
...
Buffer, Size(0) 256 Index N
Skip to next buffer size base address
Buffer, Size(1) 1024 Base Index Zero
Buffer, Size(1) 1024 Index One
Buffer, Size (1) 1024 Index Two
...
Buffer, Size(1) 1024 Index N
Skip to next buffer size base address
Buffer, Size(2) 4096 Base Index Zero
Buffer, Size(0) 4096 Index One
Buffer, Size (0) 4096 Index Two
...
Buffer, Size(2) 4096 Index N
Skip to next buffer size base address
Buffer, Size(3) 16384 Base Index Zero
Buffer, Size(3) 16384 Index One
Buffer, Size (3) 16384 Index Two
...
Buffer, Size(3) 16384 Index N
Skip to Virtual Address base address
V.M. Address Index Zero
V.M. Address Index One
V.M. Address Index Two
...
V.M. Address Index N
IBM Processor for Network Resources
Packet Storage Area
Buffer Pool Management (POOLS)
Page 251 of 676
IBM3206K0424