ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 161

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

Preliminary
3.5: DMAQS Length Registers
These registers specify the length in bytes of the corresponding DMA queue. This register is cleared when
the corresponding DMAQS Lower Bound Registers is written.
Length
Type
Address
Power on Value
Restrictions
3.6: DMAQS Threshold Registers
These registers specify a queue length threshold at which the corresponding status bit is generated.
These registers should be set equal to the queue length that should cause status to be generated. For exam-
ple, if the value was set to five, then no interrupt would be generated until the queue was length five or more
for the corresponding DMA queue. The threshold is level sensitive, so as long as the length is greater than or
equal to the threshold, the corresponding status bit is set. When this register is set to ‘0’, no thresholding
occurs.
Length
Type
Address
Power on Value
Restrictions
pnr25.chapt04.01
August 14, 2000
17 bits
Read
Queue 0
Queue 1
Queue 2
X’00000000’
The lengths are calculated and cannot be written.
17 bits
Read/Write
Queue 0
Queue 1
Queue 2
X’0000’
Must be a multiple of four.
614
694
714
61C
69C
71C
IBM Processor for Network Resources
DMA QUEUES (DMAQS)
Page 161 of 676
IBM3206K0424