HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 253

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Synchronous DRAM can be connected without external multiplexing circuitry in accordance with
the address multiplex specification bits AMX3-AMX0 in MCR. Table 8.17 shows the relationship
between the address multiplex specification bits and the bits output at the address pins.
A25 to A17 and A0 are not multiplexed; the original values are always output at these pins.
When A0, the LSB of the synchronous DRAM address, is connected to this LSI, it performs
longword address specification. Connection should therefore be made in the following order:
connect pin A0 of the synchronous DRAM to pin A2 of this LSI, then connect pin A1 to pin A3.
Table 8.18 shows an example of the connection of address pins when AMX[3:0] = 0100 with 32-
bit bus width.
Address Multiplexing
Figure 8.12 Example of 64-Mbit Synchronous DRAM (16-Bit Bus Width)
This LSI
RD/
CKIO
CKE
A14
A13
A12
D15
D0
A1
Rev. 4.00, 03/04, page 207 of 660
64M synchronous DRAM
1M
A13
A12
A11
A0
CLK
CKE
DQ15
DQ0
16-bit
4-bank