Freescale Semiconductor MPC8260 - Manual (Page 1149)

Inverse Multiplexing for ATM (IMA)
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 33-47
33.4.5.2.2 IMA Link Receive State (ILRSTATE)
The fields of the ILRSTATE register are shown in Figure 33-25
Table 33-21 describes the ILRSTATE bit fields.
1
Enable these parameters to their default values during IMA initialization to avoid spurious IMA exceptions in the IMA interrupt
queues.
0 1 2 3 4 5 6 7
Field ADD_NEW_M IFSS MASK_ERR STFEX SU CHK_NXT DATA_ERR
8 9 10 11 12 13 14 15
Field icp_cell FSES SYNC_DeFeCT STFIP DL —
Figure 33-25. IMA Link Receive State (ILRSTATE)
Table 33-21. ILRSTATE Field Descriptions
Bits Name Description
0 ADD_NEW_M New Link shadow bit. Microcode managed parameter. Initialize to zero at link startup.
1-2 IFSS
1
IMA frame synchronization state. Microcode-managed parameter. Initialize to zero at
link startup.
00 IMA hunt.
01 IMA presync.
1x IMA sync.
3 MASK_ERR Mask Error. Microcode managed parameter. Initialize to zero at link startup.
4 STFEX Stuff cell expected. Microcode-managed parameter. Initialize to zero at link startup.
5 SU Start Up. Microcode-managed parameter. Initialize to zero at link startup.
6 CHK_NXT Check Next. Microcode-managed parameter. Initialize to zero at link startup.
7 DATA_ERR Data Error - Parity/CRC. Microcode-managed parameter. Initialize to zero at link
startup.
8 ICP_CELL Current Cell is an ICP Cell. Microcode-managed parameter. Initialize to zero at link
startup.
9-10 FSES 1 Frame Synchronization Error State. Microcode-managed parameter. Initialize to 10 at
link startup.
00 IMA working.
01 Out-of-IMA frame anomaly.
1x Loss-of-IMA frame defect.
11 SYNC_DEFECT Synchronization Defect. Microcode-managed parameter. Initialize to zero at link
startup.
12 STFIP Stuff In-Progress flag. Microcode-managed parameter. Initialize to zero at link startup.
13 DL Dropped link. Microcode-managed parameter. Initialize to zero at link startup.
14-15 — Reserved, initialize to zero.