TN0436

Differences cut1 and cut2

Doc ID 18327 Rev 2

6/10

2.2

Feature enhancements

The list below shows feature enhancements for cut2.

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Nexus - NXSS

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Nexus - RDY PIN

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Nexus – DDR mode – I/O timing

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DSPI enhanced version

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CRC Unit - support for additional polynominal

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AIPS MPROT - enhanced protection features

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MC_RGM - destructive reset can be triggered by software

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SSCM - easier access to NVM calibration data

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Selftest - reduction of execution time

2.2.1

Nexus - NXSS

The Nexus Crossbar Slave Port Data Trace Module for System SRAM allows to trace all

DMA/SRAM accesses.

2.2.2

Nexus - RDY PIN

To increase the transfer rate of the IEEE 1149.1 port, an additional pin has been

implemented to signal when data are ready to be transferred to and from NRRs. This may

eliminate the need to poll NRRs for status information for synchronization purposes. This

capability becomes especially important when performing read/write access transfers to

different speed target memories.

This functionality is only available on BGA257 package (ball K3). RDY is muxed with GPIO

(GPIO is default out of reset).

2.2.3

Nexus - DDR mode – I/O timing

The I/O timing has been changed so that the MDO / MSEO outputs are valid during the

MCKO rising and falling edges.

2.2.4

DSPI - enhanced version

Support higher net through put in slave mode by reducing required dead cycles in back to

back operation.

2.2.5

CRC Unit - support for additional polynominal

An additional 8-bit CRC polynomial has been implemented. The bit field 28:29 of the register

CRC_CFG for each context selects the polynomial preserving compatibility with previous

versions of this IP used on cut1.

2.2.6

AIPS MPROT - enhanced protection features

The default reset MPROT (Master Protection) configuration for each AIPS bridge is

determined via the aips_rstcfg vector which has been changed.