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SH7041A датащи(PDF) 223 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) 223 Page - Renesas Technology Corp

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185
10.3
Accessing Ordinary Space
A strobe signal is output by ordinary space accesses to provide primarily for SRAM or ROM
direct connections.
10.3.1
Basic Timing
Figure 10.3 shows the basic timing of ordinary space accesses. Ordinary access bus cycles are
performed in 2 states.
T1
CK
Address
CSn
RD
Read
Write
Data
WRx
Data
T2
Figure 10.3 Basic Timing of Ordinary Space Access
During a read, irrespective of operand size, all bits in the data bus width for the access space
(address) are fetched by the LSI on
RD, using the required byte locations.
During a write, the following signals are associated with transfer of these actual byte locations:
WRHH (bits 31–24), WRHL (bits 23–16), WRH (bits 15–8), and WRL (bits 7–0).



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