ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 271

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

Preliminary
9.22: POOLS Packet and Control Memory Access Threshold
The POOLS Packet and Control Memory Access Threshold timers are used to help limit the amount of time
that pools can be held off from its respective memory.
The bits are a 12-bit count. When the proper bit in the POOLS Control Register is set and a request is made
to the requisite memory, a counter is loaded with this value. The counter will then count down to zero in 30 ns
ticks. When it hits zero, it forces the request to high priority.
Length
Type
Address
Power on Reset value
Restrictions
9.23: POOLS Buffer Map Group
The POOLS Buffer Map Group holds the buffer map of the packet that is in the process of being freed. From
this map, the pool ID and the indexes that have been used are returned to their correct queue.
This register consists of a 16-bit flag field and 16-bit indexes.
The flag field contains the pool id and the valid bit. When a packet is freed, the valid bit is set to ’0’. When a
get operation occurs, the valid bit is then set. This helps to find address duplicates and other address related
problems that software can generate.
Length
Type
Address
Power on Reset value
Restrictions
pnr25.chapt04.01
August 14, 2000
12 bits
Read/Write
Packet Memory Timer Threshold
Control Memory Timer Threshold
X'080'
None
32 bits
Read/Write
Upper 16 Bits:
Flag Field 0
Index 1
Flag Field 1
Index 4
Flag Field 2
Index 7
Flag Field 3
Index 10
Flag Field 4
Index 13
X'FFFFFFFF'
None
Lower 16 Bits:
Index 0
Index2
Index 3
Index 5
Index 6
Index 8
Index 9
Index 11
Index 12
Index 14
XXXX 30E4
XXXX 30E0
IBM Processor for Network Resources
XXXX 309C
XXXX 30A0
XXXX 30A4
XXXX 30A8
XXXX 30AC
XXXX 30B0
XXXX 30B4
XXXX 30B8
XXXX 30BC
XXXX 30C0
Buffer Pool Management (POOLS)
Page 271 of 676
IBM3206K0424