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SH7041A bảng dữ liệu(PDF) 204 Page - Renesas Technology Corp

tên linh kiện SH7041A
Giải thích chi tiết về linh kiện  Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
PDF  923 Pages
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nhà sản xuất  RENESAS [Renesas Technology Corp]
Trang chủ  http://www.renesas.com
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SH7041A bảng dữ liệu(HTML) 204 Page - Renesas Technology Corp

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10.1.4
Register Configuration
The BSC has eight registers. These registers are used to control wait states, bus width, and
interfaces with memories like DRAM, ROM, and SRAM, as well as refresh control. The register
configurations are listed in table 10.2.
All registers are 16 bits. Do not access DRAM space before completing the memory interface
settings. All BSC registers are all initialized by a power-on reset, but are not by a manual reset.
Values are maintained in standby mode.
Table 10.2
Register Configuration
Name
Abbr.
R/W
Initial Value Address
Access Size
Bus control register 1
BCR1
R/W
H'200F
H'FFFF8620 8, 16, 32
Bus control register 2
BCR2
R/W
H'FFFF
H'FFFF8622 8, 16, 32
Wait state control register 1
WCR1
R/W
H'FFFF
H'FFFF8624 8, 16, 32
Wait state control register 2
WCR2
R/W
H'000F
H'FFFF8626 8, 16, 32
DRAM area control register
DCR
R/W
H'0000
H'FFFF862A 8, 16, 32
Refresh timer control/status register RTCSR
R/W
H'0000
H'FFFF862C 8, 16, 32
Refresh timer counter
RTCNT
R/W
H'0000
H'FFFF862E 8, 16, 32
Refresh time constant register
RTCOR
R/W
H'0000
H'FFFF8630 8, 16, 32



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