MAC7200 datasheet(290/976 Pages) FREESCALE

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The SPP DMA Controller Module (SPP_DMA2)

MAC7200 Microcontroller Family Reference Manual, Rev. 2

212

Freescale Semiconductor

12.2.4.1.3

DMA Enable Request (DMAERQH, DMAERQL)

The DMAERQ{H,L} registers provide a bit map for the implemented channels {16,32,64} to enable the

request signal for each channel. DMAERQH supports channels 63-32, while DMAEQRL covers channels

31-00. The state of any given channel enable is directly affected by writes to this register; it is also affected

by writes to the DMASERQ and DMACERQ registers. The DMA{S,C}ERQ registers are provided so that

CPE

Channel Priority Error.

0 No channel priority error.

1 The last recorded error was a configuration error in the channel priorities. All channel priorities are not unique.

13–8

ERRCHN

[5:0]

Error Channel Number. The channel number of the last recorded error. (excluding CPE errors).

SAE

Source Address Error.

0 No source address configuration error.

1 The last recorded error was a configuration error detected in the TCD.saddr field. TCD.saddr is inconsistent with

TCD.ssize.

SOE

Source Offset Error.

0 No source offset configuration error.

1 The last recorded error was a configuration error detected in the TCD.soff field. TCD.soff is inconsistent with

TCD.ssize.

DAE

Destination Address Error.

0 No destination address configuration error.

1 The last recorded error was a configuration error detected in the TCD.daddr field. TCD.daddr is inconsistent with

TCD.dsize.

DOE

Destination Offset Error.

0 No destination offset configuration error.

1 The last recorded error was a configuration error detected in the TCD.doff field. TCD.doff is inconsistent with

TCD.dsize.

NCE

Nbytes/Citer Configuration Error.

0 No nbytes/citer configuration error.

1 The last recorded error was a configuration error detected in the TCD.nbytes or TCD.citer fields. TCD.nbytes is

not a multiple of TCD.ssize and TCD.dsize, or TCD.citer is equal to zero, or TCD.citer.e_link is not equal to

TCD.biter.e_link.

SGE

Scatter/Gather Configuration Error.

0 No scatter/gather configuration error.

1 The last recorded error was a configuration error detected in the TCD.dlast_sga field. This field is checked at the

beginning of a scatter/gather operation after major loop completion if TCD.e_sg is enabled. TCD.dlast_sga is not

on a 32 byte boundary.

SBE

Source Bus Error.

0 No source bus error.

1 The last recorded error was a bus error on a source read.

DBE

Destination Bus Error.

0 No destination bus error.

1 The last recorded error was a bus error on a destination write.

Table 12-6. DMAES Field Descriptions (Continued)

Field

Description

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