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SH7041A Folha de dados(PDF) 204 Page - Renesas Technology Corp

Nome de Peças SH7041A
Descrição Electrónicos  Renesas 32-Bit Single-Chip RISC Microprocessor SuperH RISC engine Family/SH7040 Series(CPU Core SH-2)
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Fabricante Electrônico  RENESAS [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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