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SH7041A датащи(PDF) 189 Page - Renesas Technology Corp

номер детали SH7041A
подробное описание детали  Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
PDF  923 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
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SH7041A датащи(HTML) 189 Page - Renesas Technology Corp

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Table 8.5
Block Transfer Mode Register Functions
Register
Function
Values Written Back upon a
Transfer Information Write
DTMR
Operation mode
control
DTMR
DTCRA
Transfer count
DTCRA – 1
DTCRB
Block length
(Not written back)
DTSAR
Transfer source
address
(DTS = 0) Increment/ decrement/ fixed
(DTS = 1) DTSAR initial value
DTDAR
Transfer destination
address
(DTS = 0) DTDAR initial value
(DTS = 1) Increment/ decrement/ fixed
8.3.8
Operation Timing
Figure 8.6 shows a DTC operation timing example.
Activating
source
DTC
request
Address
Vector
read
Data
transfer
Transfer
information
read
Transfer
information
write
R
W
φ
Figure 8.6 DTC Operation Timing Example (Normal Mode)
When register information is located in on-chip RAM, each mode requires 4 cycles for transfer
information reads, and 3 cycles for writes.
8.3.9
DTC Execution State Counts
Table 8.6 shows the execution state for one DTC data transfer. Furthermore, table 8.7 shows the
state counts needed for execution state.



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