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PPP and ATM Termination Type C RAM Package Release 1.4.1

Freescale Semiconductor 5

Table 6. Revision History—Revision 1.3.0

Release 1.3.0, Revision Register Number 0xCEBAC130

New Features

New feature added to ATM MiniCAM function. VPSW Filter mode adds Filtering capabilities to VP switch

CAM search.

This package introduces enhancements for PPP Tx bandwidth use optimization.

The number of PPP IW CPU queues were increased from four to eight.

Bug Fixes

None

Table 7. Revision History—Revision 1.2.0

Release 1.2.0, Revision Register Number 0xCEBAC120

New Features

Limited IW capabilities were added that allow parse, lookup and forward of the frames to CPU only or

reject.

It is possible to configure Ethernet and PPP to operate in IW mode but under the following limitations:

Parser:

• Parser interrupts are not allowed. Meaning that (HIE, MIE, UIE and LIE) must be cleared

Ethernet:

• IW forwarding to ENET and PPP is not available. Usage of IWAD is not allowed. TAD, PLAD and RAD

are the only possible configurations.

• No IWCT/HM/IWCS support, meaning that IWCT index on TAD must be zero.

PPP:

• IW forwarding to ENET is not available. IWAD with FwE=1 is not allowed. IWAD with CPU=1 and

FwE=0, PLAD and RAD are the only possible configurations

• No IWCT/HM/IWCS support, meaning that IWCT index on IWAD must be zero.

Bug Fixes

A frame with packet length of 1518 bytes is not counted by EtherStatsPkts1024 counter. This counter

should count all frames with a length that is between 1024 and 1518 octets in length inclusive (excluding

framing bits but including FCS octets). Therefore EtherStatsPkts1024 counter is not compatible to

RFC2819.

Generally speaking an ATM transmit host command blocks the ATM SNUM when the host command task

executes. In SAM only mode the SAM microcode jumps to ATM code without going through the scheduler.

In this case ATM code can run simultaneously with Tx host command resulting in a wrong ATM scheduling.

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