Hytera PD78XG - Call; Private Call

Service Manual Baseband Section
9
3.2.2 External Memory
OMAP5912 provides two types of external memory interfaces: external memory interface slow (EMIFS)
and external memory interface fast (EMIFF).
OMAP5912
EMIFF EMIFS
SDRAM.A[0:12]
FLASH.A[24:1]
SDRAM.D[0:15] FLASH.A[15:0]
SDRAM.BA0
SDRAM.BA1
SDRAM.CAS#
FLASH.CS3#
SDRAM.RAS#
RST_OUT#
SDRAM.CKE#
SDRAM.CLK#
SDRAM.CS#
SDRAM.WE#
SDRAM.DQML
SDRAM.DQMU
A[0:12]
D[0:15]
BA0
BA1
CAS#
RAS#
CKE
CLK
CS#
WE#
LDQM
ULQM
TV00570002CDGB
A[23:0]
DQ[15:0]
OE#
WE#
Cef#
RESET#
WP#/ACC
RY/Byf#
FLASH.WP#
FLASH.RDY
FLASH.OE#
FLASH.WE#
MT48H8M16LFB4-75
Figure 3-5 Diagram of External Memory
EMIFS
EMIFS is a 16-bit interface, and provides four 64MB chip selects (CS0~CS3). The interface supports
memories such as NAND Flash, NOR Flash and SRAM.
EMIFF
EMIFF is a 16-bit interface, and supports SDRAM (up to 128MB), mobile SDRAM and mobile DDR.