Freescale Semiconductor MPC8260 - Manual (Page 1043)

ATM AAL1 Circuit Emulation Service
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 31-27
Table 31-5. RCT Field Descriptions
Offset Bits Name Description
0x00 0–1 — Reserved, should be cleared during initialization.
2 GBL Global. Asserting GBL enables snooping of data buffers, BD, interrupt queues and free
buffer pool.
3–4 BO Byte ordering—used for data buffers.
00 Reserved
01munged little endian
1x Big endian
5 — Reserved, should be cleared during initialization.
6 DTB Data buffers bus
0 Data buffers reside on the 60x bus.
1 Data buffers reside on the local bus.
7 BIB BD interrupt queues, free buffer pool, and CES external statistics tables bus placement
0 Reside on the 60x bus.
1 Reside on the local bus.
Notes:
1. When in UDC mode (AAL5 or AAL1 or AAL1 CES), BDs and data should be placed
on the same bus (RCT[DTB]=RCT[BIB]).
2. RCT[BIB] programming must be consistent across all CES receive channels
because they share the same AAL1_Ext_STATT_BASE parameter.
8–9 — Reserved, should be cleared during initialization.
10 SEGF OAM F5 segment filtering
0 Do not send cells with PTI=100 to the raw cell queue.
1 Send cells with PTI=100 to the raw cell queue.
11 ENDF OAM F5 end-to-end filtering
0 Do not send cells with PTI=101 to the raw cell queue.
1 Send cells with PTI=101 to the raw cell queue.
12 — Reserved, should be cleared during initialization.
13 SYNC AAL1 SYNC. The user should set this bit for first AAL1 synchronization. Used internally
by the CP.
14–15 INTQ Points to one of four interrupt queues available.
0x02 0-3 — Internal use only. Initialize to 0.
4–10 — Internal use only. Initialize to 0.
11 CASM Common associated signaling mode.
0 CAS operation mode is disable.
1 CAS operation mode is enable.
12 — Reserved, should be cleared during initialization.
13–15 AAL AAL type
000 AAL0 —Reassembly with no adaptation layer
001 AAL1 —ATM adaptation layer 1
010 AAL5 —ATM adaptation layer 5
100 AAL2 —ATM adaptation layer 2. Refer to
Chapter 32, “ATM AAL2 .”
101 AAL1_CES —ATM adaptation layer 1 with circuit emulation service
All others reserved.