ATM Controller and AAL0, AAL1, and AAL5
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
30-4 Freescale Semiconductor
Performs ATMF UNI 4.0 ABR flow control on a per-VC basis
Automatic forward-RM, backward-RM cells generation
Automatic feedback rate adaptation
Support for EFCI (explicit forward congestion indication) and ER (explicit rate)
RM cell floating-point calculations
Fully managed by CP with no host intervention
Receive address look-up mechanism
Two modes of address look-up are supported
External CAM
Address compression
OAM (operations and maintenance) cells
OAM filtering according to PTI field and reserved VCI field
Raw cell queues for transmission and reception
CRC-10 generation/check
Performance monitoring support
Support up to 64 bidirectional block tests simultaneously
Automatic FMC and BRC cell generation and termination
User transmit cell0+1 count
User transmit cell0 count
PM cells time stamp insertion
Block error detection code (BEDC0+1) generation/check
Total receive cell0+1 count
Total receive cell0 count
Specifying channel code for F5 OAM cells
ATM layer statistic gathering on a per PHY basis.
UTOPIA receiver error cells count (Rx parity error or short/long cells error)
Misinserted cell count
CRC-10 error cells count (ABR flow only)
Memory management
RxBD table per VC with option of global free buffer pool for AAL5
TxBD table per VC
30.2 ATM Controller Overview
The following sections provide an overview of the transmitter and receiver porti ons of the ATM controller.