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H8SX/1663R Scheda tecnica(PDF) 555 Page - Renesas Technology Corp

Il numero della parte H8SX/1663R
Spiegazioni elettronici  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1504 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX/1663R Scheda tecnica(HTML) 555 Page - Renesas Technology Corp

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Section 11 EXDMA Controller (EXDMAC)
Rev. 2.00 Sep. 24, 2008 Page 523 of 1468
REJ09B0412-0200
Figures 11.44 to 11.47 show operation timing examples for various conditions.
3 cycles
Last transfer cycle
B
φ
EDREQ
EDRAK
Bus cycle
ETEND
DTE bit
Bus release
Bus release
EXDMA
read
EXDMA
write
Bus release
EXDMA
read
EXDMA
write
0
1
Figure 11.44 External Request/Normal Transfer Mode/Cycle Steal Mode
(No Conflict/Dual Address Mode/Low Level Sensing)
One bus cycle
Last transfer cycle
B
φ
EDREQ
EDRAK
Bus cycle
ETEND
EDACK
CPU operation
CPU cycle
CPU cycle
EXDMAC single
transfer cycle
CPU cycle
CPU cycle
EXDMAC single
transfer cycle
External
space
External space
External space
External
space
Figure 11.45 External Request/Normal Transfer Mode/Cycle Steal Mode
(CPU Cycles/Single Address Mode/Low Level Sensing)



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