Cypress FM4 Series - Page 796

CHAPTER 14: External Bus Interface
796 FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E
32-Kword x 16-bit SRAM Multiplex Mode
Figure 4-5 shows an example of 32K-word x 16-bit SRAM connection for accessing with 16-bit width (in
multiplex mode).
Figure 4-5 Example of 32K-word x 16-bit SRAM Multiplex Mode Connection
32K-word x 8-bit SRAM Multiplex Mode
Figure 4-6 shows an example of connecting two 32K-word x 8-bit SRAMs for accessing with 16-bit width
(in multiplex mode).
Figure 4-6 Example of 8-bit SRAM Multiplex Connection
MALE
MCSX[0]
This LSI
A[14:0]
CS
OE
MDQM[1:0]
DQ[15:0]
32Kword x 16bit
SRAM
MADATA[15:0]
MDQM[1:0]
MOEX
G
D[15:1]
Q
Address latch
MADATA[15:1]
WEMWEX
MALE
MCSX[0]
This LSI
A[14:0]
CS
OE
WE
DQ[7:0]
32Kword x 8bit
SRAM
A[14:0]
CS
OE
WE
DQ[7:0]
32Kword x 8bit
SRAM
MADATA[15:0]
MDQM[1:0]
MOEX
G
D[15:1]
Q
MDQM[1]
MDQM[0]
MADATA[15:1]
MADATA[15:8]
MADATA[7:0]
Address latch