Freescale Semiconductor MPC8260 - Manual (Page 1127)

Inverse Multiplexing for ATM (IMA)
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 33-25
Figure 33-12. IMA Root Table Data Structures
The IMA data structures are organized as follows:
• Parameters at the FCC level determine common ATM parameters and location of the IMA Root
Table
• IMA Root Table includes parameters that are used by all IMA links of this FCC
• IMA Group Receive Table and IMA Group Transmit Table entries include parameters that define
the receive and transmit states and settings of the associated IMA group
• IMA Link Receive Table and IMA Link Transmit Table entries include parameters that define the
receive and transmit states and settings of the associated IMA link
• Optional IDCR Table that contains IDCR timers for the IMA groups
Filler Cell Template
Transmit Queue Info
IMA Control Parameter
PHY Management
IMAEXTBASE
IMAGRPT_TX
IMAGRPT_RX
IMALINKT_TX
IMALINKT_RX
IRLINKSTAT
IMA Data Structures
External memory
Group 0
.
.
.
Group 7
IMA Group Tx Table
Group 0
.
.
.
Group 7
IMA Group Rx Table
Link 0
.
.
.
Link 31
IMA Link Tx Table
Link 0
.
.
.
Link 31
IMA Link Rx Table
DCBs, TX Queue
(Local or 60x Bus)
must be aligned to
1MByte Boundary.
IMA Root Table
IMA Link Receive
Internal DPRAM
IDCR param.
(Optional)
IDCR Table
IMA Root Table
Statistics Table