HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 336

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

7.5.11
64 Mbit Synchronous DRAM ( 32 Bit) Connection Example: Figure 7.34 shows an example
connection between the SH7615 and 64 Mbit synchronous DRAM ( 32 bit).
Bus Status Controller (BSC) Register Settings: Set the individual bits in the memory control
register (MCR) as follows.
MCR (bit 6) SZ = 1
MCR (bit 7) AMX2 = 0
MCR (bit 5) AMX1 = 0
MCR (bit 4) AMX0 = 0
Synchronous DRAM Mode Settings: To make mode settings for the synchronous DRAM, write
to address X+H'FFBF0000 or X+H'FFBF8000 from the CPU.. (X represents the setting value.)
Whether to use X+H'FFBF0000 or X+H'FFBF8000 determines on the synchronous DRAM used.
Figure 7.34 64 Mbit Synchronous DRAM (2 Mword
DQMUU/WE3
DQMUL/WE2
DQMLU/WE1
DQMLL/WE0
Chip
64 Mbit Synchronous DRAM (2 Mword
CAS/OE
RD/WR
CKIO
CKE
RAS
CSn
D31
A22
A13
A12
D0
A2
32 Bit) Connection
32 Bit) Connection Example
A12
A11
A10
A0
CLK
CKE
CS
RAS
CAS
WE
I/O31
I/O0
DQMUU
DQMUL
DQMLU
DQMLL
32-bit SDRAM
2 Mword
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