Cypress FM4 Series - Page 797

CHAPTER 14: External Bus Interface
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 797
16-bit SDRAM
Figure 4-7 shows an example of connecting a 16-bit SDRAM.
Figure 4-7 Example of 16-bit SDRAM Connection
16-bit SDRAM × 2
Figure 4-8 shows an example of connecting two 16-bit SDRAMs.
Figure 4-8 Example of Two 16-bit SDRAMs Connection
This LSI
MCSX[8]
MAD[15:0]
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]
This LSI
MAD[15:0]
MCSX[8]
MRASX
MCASX
MSDWEX
MSDCLK
MSDCLE
MDQM[3:0]
MADATA[31:16]
MADATA[15:0]
[15:14]
[11:0]
16-bit SDRAM
BA[1:0]
A[11:0]
CS
RAS
CAS
WE
CLK
CKE
DQM[1:0]
DQ[15:0]
16-bit SDRAM
BA[1:0]
A[11:0]
CS
RAS
CAS
WE
CLK
CKE
DQM[1:0]
DQ[15:0]
[11:0]
[15:14]
[3:2]
[1:0]