ibm3206k0424 ETC-unknow, ibm3206k0424 Datasheet - Page 170

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

IBM3206K0424
IBM Processor for Network Resources
DMA QUEUES (DMAQS)
Page 170 of 676
19-16
Bit(s)
15-0
Source Address Specifier
Byte Transfer Count
Function
These bits specify how the source address should be used for this DMA descriptor.
0000
0001
0010
0011
-100
-111
1000
1-11
Others Reserved: Reserved and flagged as errors.
These bits indicate the number of bytes to transfer. A non-zero value in this field will
start the DMA transfer.
The following are the valid patterns:
IBM3206K0424 Memory Address: The source address specifies an
IBM3206K0424 internal memory address.
PCI bus address: The source address specifies a PCI bus address.
IBM3206K0424 Register Address: The source address specifies an
IBM3206K0424 register address. Only the low 16 bits must be specified.
IBM3206K0424 Memory Address and Free Buffer when DMA Complete: The
source address specifies an IBM3206K0424 internal memory address, and
this address will be freed to POOLS when the DMA is complete.
Auto Increment Source Address: The source address is sourced from the pre-
vious DMA instead of the source address specified in the descriptor.
Auto Increment Source Address and Free Buffer when DMA Complete: The
source address is sourced from the previous DMA instead of the source
address specified in the descriptor. The source address specifies an
IBM3206K0424 internal memory address, and this address will be freed to
POOLS when the DMA is complete.
Immediate Data: Use the Source Address Field as immediate data. The data is
4 bytes in 32-bit addressing mode or eight bytes when in 64 bit addressing
mode. If the count is greater than the data size, the data is repeated.
Immediate Data and Free Buffer when DMA Complete: Use the Source
Address Field as immediate data. The data is 4 bytes in 32 bit addressing
mode or eight bytes when in 64-bit addressing mode. If the count is greater
than the data size, the data is repeated. The source address will be freed to
POOLS when the DMA is complete.
Description
pnr25.chapt04.01
August 14, 2000
Preliminary