Cypress FM4 Series - Page 516

CHAPTER 11: DSTC
516 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
The values of DES3 (transfer destination address) after the end of the transfer are updated according to
the values of MODE, DAC[2:0] and ORL[2] of DES0 at the start of the transfer as shown in Table 3-7. "X"
in Table 3-7 indicates that value has no effect on operation. If the start value of DES3 is different from the
end value, rebuild DES3 before restart to transfer.
Table 3-7 Values of DES2 after Transfer End
Values of DES0 at Transfer Start
Values of DES3 after Transfer End
Necessity of
Rebuilding DES3
MODE
DAC[2:0]
ORL[2]
0
xx0
0
Transfer destination address at final outer loop start
Necessary
0
xx1
0
Values at transfer start
Unnecessary
1
xx0
0
Transfer destination address of final transfer
Necessary
1
xx1
0
Values at transfer start
Unnecessary
X
X
1
Values of DES6 are copied.
Unnecessary
The setting is that DES0.DV[1]=1 and DES1,2,3 is need to rebuild (DES1,2,3 is not returned to the start
value), caused to notify a DES open error from the DSTC. For details, see 3.2.8 MONERS Register.