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210
SH704x
256k
×
16 bits
DRAM
RAS
RDWR
A0
A1
A2–A10
CASHH
CASHL
AD16–AD31
RAS
WE
OE
A0–A8
UCAS
LCAS
I/O0–I/O15
I/O0–I/O15
CASH
CASL
AD0–AD15
RAS
WE
OE
A0–A8
UCAS
LCAS
Figure 10.31 32-Bit Data Bus Width DRAM Connection
10.9
On-Chip Peripheral I/O Register Access
On-chip peripheral I/O registers are accessed from the bus state controller, as shown in table 10.6.
Table 10.6
On-Chip Peripheral I/O Register Access
On-chip
Peripheral Module SCI
MTU,
POE
INTC
PFC,
PORT CMT
A/D
*
UBC
WDT
DMAC DTC
CACHE
Connected bus
width
8bit
16bit
16bit
16bit
16bit
16bit
16bit
16bit
16bit
16bit
16bit
Access cycle
2cyc
2cyc
2cyc
2cyc
2cyc
2cyc
3cyc
3cyc
3cyc
3cyc
3cyc
Note:
*
A/D of A mask products are accessed in 8-bit width, 3 cyc.
Содержание SH7041 Series
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