Cypress FM4 Series - Page 798

CHAPTER 14: External Bus Interface
798 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
32-bit SDRAM
Figure 4-9 shows an example of connecting a 32-bit SDRAM.
Figure 4-9 Example of 32-bit SDRAM Connection
8-bit SRAM, 16-bit SDRAM
Figure 4-10 shows an example of connecting 8-bit SRAM and 16-bit SDRAM.
Figure 4-10 Example of Connecting 8-bit SRAM and 16-bit SDRAM
This LSI
MCSX[8]
MAD[24:0]
MADATA[15:0]
MDQM[1:0]
MCASX
MRASX
MSDWEX
MSDCKE
MSDCLK
BA[1:0]
A[11:0]
CS
16-bit SDRAM
[15:14]
[11:0]
RAS
CAS
WE
CLK
CKE
DQM[1:0]
DQ[15:0]
8-bit SRAM
MCSX[0]
MOEX
MWEX
A[24:0]
CS
OE
WE
DQ[7:0]
This LSI
MCSX[8]
MAD[15:0]
MADATA[31:0]
MDQM[3:0]
MCASX
MRASX
MSDWEX
MSDCKE
MSDCLK
BA[1:0]
A[11:0]
CS
32-bit SDRAM
[15:14]
[11:0]
RAS
CAS
WE
CLK
CKE
DQM[3:0]
DQ[31:0]