Overview
MPC8260 PowerQUICC II Family Reference Manual, Rev. 2
Freescale Semiconductor 1-5
Performing HEC error detection and single bit error correction (programmable by
user)
Generating loss of cell delineation status/interrupt (LOC/LCD)
Operates with FCC2 (UTOPIA 8)
Provides serial loop back mode
Cell echo mode is provided
Supports both FCC transmit modes
External rate mode—Idle cells are generated by the FCC (microcode) to control data rate.
Internal rate mode (sub-rate)—FCC transfers only the data cells using the required data rate.
The TC layer generates idle/unassigned cells to maintain the line bit rate.
Supports TC-layer and PMD-WIRE interface (according to the ATM-Forum af-phy-0063.000)
Cell counters for performance monitoring
16-bit counters count
HEC error cells
HEC single bit error and corrected cells
Idle/unassigned cells filtered
Idle/unassigned cells transmitted
Transmitted ATM cells
Received ATM cells
Maskable interrupt is sent to the host when a counter expires
Overrun (Rx cell FIFO) and underrun (Tx cell FIFO) condition produces maskable interrupt
May be operated at E1 and DS-1 rates. In addition, xDSL applications at bit rates up to 10 Mbps
are supported
PCI bridge (MPC8250, MPC8265, and MPC8266 only)
PCI Specification Revision 2.2 compliant and supports frequencies up to 66 MHz
On-chip arbitration
Support for PCI to 60x memory and 60x memory to PCI streaming
PCI Host Bridge or Peripheral capabilities
Includes 4 DMA channels for the following transfers:
PCI-to-60x to 60x-to-PCI
60x-to-PCI to PCI-to-60x
PCI-to-60x to PCI-to-60x
60x-to-PCI to 60x-to-PCI
Includes all of the configuration registers (which are automatically loaded from the EPROM
and used to configure the PowerQUICC II) required by the PCI standard as well as message
and doorbell registers