Section 7
Data Transfer Controller (DTC)
Rev.2.00 Jun. 28, 2007 Page 233 of 666
REJ09B0311-0200
Table 7.3
Chain Transfer Conditions
1st Transfer
2nd Transfer
CHNE CHNS DISEL
Transfer
Counter
*
1
CHNE CHNS DISEL
Transfer
Counter
*
1
DTC Transfer
0
0 Not
0
Ends at 1st transfer
0
0 0
*
2
Ends at 1st transfer
0
1
Interrupt request to CPU
0
0
Not 0
Ends at 2nd transfer
0
0 0
*
2
Ends at 2nd transfer
1 0
0
1
Interrupt request to CPU
1 1 0 Not
0
Ends at 1st transfer
0
0
Not 0
Ends at 2nd transfer
0
0 0
*
2
Ends at 2nd transfer
1 1
0
*
2
0
1
Interrupt request to CPU
1 1 1 Not
0
Ends at 1st transfer
Interrupt
request
to
CPU
Notes: 1. CRA in normal mode transfer, CRAL in repeat transfer mode, or CRB in block transfer
mode
2. When the contents of the CRAH is written to the CRAL in repeat transfer mode
7.5.1 Bus
Cycle
Division
When the transfer data size is word and the SAR and DAR values are not a multiple of 2, the bus
cycle is divided and the transfer data is read from or written to in bytes. Similarly, when the
transfer data size is longword and the SAR and DAR values are not a multiple of 4, the bus cycle
is divided and the transfer data is read from or written to in words.
Table 7.4 shows the relationship among, SAR, DAR, transfer data size, bus cycle divisions, and
access data size. Figure 7.5 shows the bus cycle division example.
Table 7.4
Number of Bus Cycle Divisions and Access Size
Specified Data Size
SAR and DAR Values Byte (B)
Word (W)
Longword (LW)
Address 4n
1 (B)
1 (W)
1 (LW)
Address 2n + 1
1 (B)
2 (B-B)
3 (B-W-B)
Address 4n + 2
1 (B)
1 (W)
2 (W-W)
Содержание H8SX/1650
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Страница 106: ...Section 4 Exception Handling Rev 2 00 Jun 28 2007 Page 84 of 666 REJ09B0311 0200...
Страница 142: ...Section 5 Interrupt Controller Rev 2 00 Jun 28 2007 Page 120 of 666 REJ09B0311 0200...
Страница 326: ...Section 8 I O Ports Rev 2 00 Jun 28 2007 Page 304 of 666 REJ09B0311 0200...
Страница 470: ...Section 12 Watchdog Timer WDT Rev 2 00 Jun 28 2007 Page 448 of 666 REJ09B0311 0200...
Страница 546: ...Section 13 Serial Communication Interface SCI Rev 2 00 Jun 28 2007 Page 524 of 666 REJ09B0311 0200...
Страница 566: ...Section 14 A D Converter Rev 2 00 Jun 28 2007 Page 544 of 666 REJ09B0311 0200...
Страница 574: ...Section 16 RAM Rev 2 00 Jun 28 2007 Page 552 of 666 REJ09B0311 0200...
Страница 584: ...Section 17 Clock Pulse Generator Rev 2 00 Jun 28 2007 Page 562 of 666 REJ09B0311 0200...
Страница 638: ...Section 19 List of Registers Rev 2 00 Jun 28 2007 Page 616 of 666 REJ09B0311 0200...
Страница 668: ...Section 20 Electrical Characteristics Rev 2 00 Jun 28 2007 Page 646 of 666 REJ09B0311 0200...
Страница 676: ...Appendix Rev 2 00 Jun 28 2007 Page 654 of 666 REJ09B0311 0200...
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Страница 692: ...H8SX 1650 Group Hardware Manual...